Qu ick Sta r t Gu id e
Agilen t Tech n ologies
ESG Fa m ily Sign a l Gen er a tor s
Ser ia l Nu m ber P r efixes:
(Affix Label Here)
Part No. E4400-90326
P r in ted in USA
October 2000
Supersedes April 2000
© Copyright 1999, 2000 Agilent Technologies
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ESG Family Signal Generators
1
Gettin g Sta r ted
This chapter will help you learn how to do the following with your signal generator:
•
•
•
•
create an FM signal
generate step and list sweeps
use the save and recall functions
set up a digital modulation in GSM format (Option UN8 only)
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Getting Started
ESG Family Signal Generators
The Signal Generator at a Glance
Th e Sign a l Gen er a tor a t a Gla n ce
Refer to the figure and descriptions below as you use the procedures in this chapter. For
detailed front and rear panel information, refer to Chapter 2, “Exploring the User Interface.”
1. Active Entry Area. The current active function is
8. Menu Keys. These hardkeys provide access to the
shown in this area.
signal generator’s primary functionality.
2. Annunciators. These display annunciators show
9. RF Output Connector. This female Type-N
the status of various signal generator functions.
connector is the output connector for RF signals.
3. Frequency Area. The current CW frequency is
10. Numeric Keypad. The numeric keypad consists of
digit, decimal point, and backspace keys. The
backspace key can also be used to change the sign
of a numeric value.
shown in this portion of the display.
4. Amplitude Area. The current output power level is
shown in this portion of the display.
11. Arrow Keys. The up and down arrow keys increase
or decrease numeric values. The left and right
arrow keys move the cursor.
5
Softkey Labels. The softkey labels define the
functions of the corresponding softkeys immediately
to the right of the labels.
12. Standby LED. This yellow LED lights when the
6. Softkeys. Pressing a softkey activates the function
indicated by the label on the display directly to the
left of the softkey.
instrument is in standby mode.
13. Line Power LED. This green LED lights when
power is cycled on.
7. Knob. The knob is used to increase or decrease a
numeric value.
14. Power Switch. Pressing this hardkey toggles the
power between on and standby.
1-2
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ESG Family Signal Generators
Getting Started
Creating an FM Signal
Cr ea tin g a n F M Sign a l
This procedure will show you how to configure the signal generator to output a
frequency-modulated signal with the following characteristics:
•
•
•
•
carrier frequency set to 104.9 MHz
power level set to 0 dBm
FM deviation set to 75 kHz
FM rate set to 10 kHz
Settin g th e Ca r r ier Fr equ en cy
1. Press Preset.
This sets the signal generator to its factory-defined instrument
state.
2. Press Frequency.
Frequency becomes the active function and the preset value for
frequency is displayed in the active entry area.
3. Enter 104.9 using the numeric
keypad and press the MHz
softkey.
The new carrier frequency (104.900 000 00 MHz) is
shown in both the FREQUENCYarea and the active entry area
of the display.
Settin g th e Pow er Level
1. Press Amplitude.
Amplitude becomes the active function and the preset value for
amplitude is displayed in the active entry area.
2. Enter 0 using the numeric
keypad and press the dBm
softkey.
The new power level (0.00 dBm) is shown in both the
AMPLITUDEarea and the active entry area of the display.
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Getting Started
ESG Family Signal Generators
Creating an FM Signal
Settin g th e F M Devia tion
1. Press FM/φM.
The first level menu of FM softkeys is displayed.
2. Press the FM Dev softkey.
FM deviation becomes the active function and the preset value
for FM deviation is displayed in the active entry area.
3. Enter 75 using the numeric
keypad and press the kHz
softkey.
The new FM deviation is displayed below the FM Dev softkey.
You should see 75.0000 kHzin the second line of the
softkey label.
Settin g th e F M Ra te
1. Press the FM Rate softkey.
FM rate becomes the active function and the preset value for FM
rate is displayed in the active entry area.
2. Enter 10 using the numeric
keypad and press the kHz
softkey.
The new FM rate is displayed below the FM Rate softkey. You
should see 10.0000 kHzin the second line of the softkey
label.
Tu r n in g On Fr equ en cy Mod u la tion
The signal generator is now configured to output a 0 dBm, frequency-modulated carrier at
104.9 MHz with the FM deviation set to 75 kHz and the FM rate set to 10 kHz. The shape of
the waveform is a sinewave.
NOTE
Sine is the default selection for the FM Waveform softkey. Press More (1 of 2) to see
the softkey.
Follow these remaining steps to output the frequency-modulated signal:
1. Press the FM Off On softkey.
FM toggles from Off to On. Notice, also, that the FMdisplay
annunciator is turned on, indicating that you have enabled
frequency modulation.
2. Press RF On/Off.
Notice that the display annunciator changes from RF OFFto
RF ON. The modulated signal is now available at the
RF OUTPUT connector.
1-4
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ESG Family Signal Generators
Getting Started
Creating a Step Sweep and a List Sweep
Cr ea tin g a Step Sw eep a n d a List Sw eep
This section will show you two ways to set up the signal generator to sweep a defined set of
points. You will create a ten-point step sweep with the settings listed below, then use these
points as the basis for a new list sweep.
•
•
•
frequency range from 525 MHz to 600 MHz
power level from −20 dBm to 0 dBm
dwell time 500 ms at each point
Con figu r in g a Step Sw eep
1. Press Preset.
This sets the signal generator to its factory-defined instrument
state.
2. Press Sweep/List.
The first level of sweep softkeys is displayed.
3. Press the Sweep Type List Step
This toggles the Sweep Type List Step softkey from List to
Step.
softkey.
4. Press the Configure Step Sweep
Another menu is displayed with softkeys that you will use to
create the sweep points.
softkey.
5. Press the Freq Start softkey.
Enter 525 using the numeric
keypad and press the MHz
softkey.
This sets the new start frequency for the step sweep to 525 MHz.
6. Press the Freq Stop softkey.
Enter 600 using the numeric
keypad and press the MHz
softkey.
This sets the new stop frequency for the step sweep to 600 MHz.
7. Press the Ampl Start softkey.
Enter −20 using the numeric
keypad and press the dBm
softkey.
This sets the power level for the start of the step sweep to
−20 dBm.
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Getting Started
ESG Family Signal Generators
Creating a Step Sweep and a List Sweep
8. Press the Ampl Stop softkey.
Enter 0 using the numeric
keypad and press the dBm
softkey.
This sets the new power level for the end of the step sweep to
0 dBm.
9. Press the # Points softkey.
Enter 10 by rotating the front
panel knob until the number
10 is displayed.
This sets the number of points in the step sweep.
10. Press the Step Dwell softkey.
Enter 500 using the numeric
keypad and pressing the msec
softkey.
This sets the dwell time for each point in the step sweep.
Tu r n in g On Con tin u ou s Step Sw eep
1. Press Return.
This moves the softkey menu up one level.
2. Press the Sweep softkey.
Another menu is displayed, showing you choices for sweeping
either the frequency, amplitude, or frequency and amplitude data.
3. Press the Freq & Ampl softkey.
Selecting this softkey returns you to the previous menu and turns
the sweep function on.
4. Press the
This toggles the Sweep Repeat Single Cont softkey from
Single to Cont (Continuous). Notice that the SWEEPdisplay
annunciator is turned on, indicating that the signal generator is
sweeping.
Sweep Repeat Single Cont
softkey.
5. Press RF On/Off.
Notice that the display annunciator changes from RF OFFto
RF ON. The swept RF signal is now available at the
RF OUTPUT connector.
1-6
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ESG Family Signal Generators
Getting Started
Creating a Step Sweep and a List Sweep
Con figu r in g a List Sw eep Usin g Step Sw eep Da ta
1. Press the Sweep Type List Step
This toggles the Sweep Type List Step softkey from Step to
softkey.
List.
2. Press the Configure List Sweep
Another menu is displayed with softkeys that you will use to
create the sweep points. Notice that the display shows the
current list data. (When no list has been previously created, the
default is one point set to the signal generator’s maximum
frequency, −135 dBm, with a dwell time of 2 ms.)
softkey.
3. Press the following softkeys:
More (1 of 2) >
The points you defined in the step sweep are automatically
loaded into the list.
Load List From Step Sweep >
Confirm Load From Step Sweep.
4. Press the More (2 of 2) softkey.
This softkey menu along with the numeric keypad, arrow keys,
and front panel knob can be used to edit the sweep points in the
list. For more information about editing sweep points, refer to
Chapter 2, “Using Functions,” of the ESG Family Signal
Generators User’s Guide.
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1-7
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Getting Started
ESG Family Signal Generators
Creating a Step Sweep and a List Sweep
Tu r n in g On List Sw eep for a Sin gle Sw eep
1. Press Return.
This moves the softkey menu up one level. Notice that the
Sweep softkey is still set to sweep both frequency and amplitude
data.
2. Press the
This toggles the Sweep Repeat Single Cont softkey from
Cont to Single. Notice that the SWEEPdisplay annunciator is
turned off.
Sweep Repeat Single Cont
softkey.
3. Press the Single Sweep softkey.
The signal generator sweeps the points in your list once. Notice
that the SWEEPdisplay annunciator is turned on during the
sweep.
4. Press the More (1 of 2) and
Sweep Trigger softkeys.
A menu is displayed showing you choices for triggering a sweep.
Notice that you had used the default setting, Immediate, when
you triggered the single sweep in the previous step.
5. Press the Trigger Key softkey.
This sets Sweep Trigger to Trigger Key and returns you to
the previous softkey menu.
6. Press the More (2 of 2) and
Single Sweep softkeys.
This arms the sweep so that it is ready for triggering. Notice that
the ARMEDdisplay annunciator is now turned on.
7. Press Trigger.
The signal generator sweeps the points in your list once and the
SWEEPdisplay annunciator appears during the sweep.
1-8
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ESG Family Signal Generators
Getting Started
Saving and Recalling an Instrument State
Sa vin g a n d Reca llin g a n In str u m en t Sta te
Using this procedure, you will learn how to save instrument settings to a memory register and
to recall the settings.
Cr ea tin g a n In str u m en t Sta te
1. Press Preset.
This sets the signal generator to its factory-defined instrument
state.
2. Press Frequency.
Frequency becomes the active function and the preset value for
frequency is displayed in the active entry area.
3. Enter 800 using the numeric
keypad and press the MHz
softkey.
The new carrier frequency (800.000 000 00 MHz) is
shown in both the FREQUENCYarea and the active entry area
of the display.
4. Press Amplitude.
Amplitude becomes the active function, and the preset value for
amplitude is displayed in the active entry area.
5. Enter 0 using the numeric
keypad and press the dBm
softkey.
The new power level (0.00 dBm) is shown in both the
AMPLITUDEarea and the active entry area of the display.
6. Press AM followed by the
AM Off On softkey.
AM toggles from Off to On. Notice also that the AMdisplay
annunciator is turned on, indicating that you have enabled
amplitude modulation. You have now created an example
instrument state that you will save and recall.
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Getting Started
ESG Family Signal Generators
Saving and Recalling an Instrument State
Sa vin g a n In str u m en t Sta te
1. Press Save followed by the
Select Seq softkey.
The sequence number becomes the active function. The signal
generator displays the last sequence that you have used.
2. Enter 1 using the numeric
keypad and press the Enter
softkey.
This sets the sequence number to 1. (You can also use the arrow
keys to enter the sequence number.)
3. Press the Select Reg softkey.
The register number in sequence 1 becomes the active function.
The signal generator either displays the last register used
[accompanied by the text: (in use)] or, if no registers are in
use, displays register 00 [accompanied by the text:
(available)].
4. Enter 1 using the numeric
keypad and press the
Select Reg softkey.
This selects register 01. (You can also use the arrow keys to
select the register number.)
5. Press the SAVE Seq[1] Reg[01]
The current instrument settings, including the frequency,
amplitude, and modulation changes you made, have been stored
in the signal generator memory.
softkey.
Reca llin g a n In str u m en t Sta te
1. Press Preset.
This sets the signal generator to its factory-defined instrument
state.
2. Press Recall.
Notice that the Select Seq softkey shows sequence 1. (This is
the last sequence that you used.) You do not need to change the
sequence.
3. Press the RECALL Reg softkey.
The register to be recalled in sequence 1 becomes the active
function.
4. Enter 1 using the numeric
keypad and press the Enter
softkey.
Notice that your stored instrument settings have been
immediately recalled. (You can also use the arrow keys to select
the register number.)
1-10
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ESG Family Signal Generators
Getting Started
Setting Up a Digital Modulation in the GSM Format
Settin g Up a Digita l Mod u la tion in th e GSM For m a t
NOTE
You must have an ESG-D or ESG-DP Series Signal Generator with Option UN8
to perform this procedure.
Using this procedure you will set up the signal generator to output a GMSK digitally
modulated signal in the GSM format with the following characteristics:
•
•
•
•
•
•
carrier frequency set to 891 MHz
power level set to −5 dBm
timeslot 0 activated and configured as a Custom channel
a fixed 4-bit repeating sequence selected as the data pattern for timeslot 0
timeslot 7 activated and configured as a Normal channel
4 ones and 4 zeros selected as the data pattern for timeslot 7
Settin g th e Ca r r ier Fr equ en cy
1. Press Preset.
This sets the signal generator to its factory-defined instrument
state.
2. Press Frequency.
Frequency becomes the active function and the preset value for
frequency is displayed in the active entry area.
3. Enter 891 using the numeric
keypad and press the MHz
softkey.
The new carrier frequency (891.000 000 00 MHz) is
shown in both the FREQUENCYarea and the active entry area
of the display.
Settin g th e Pow er Level
1. Press Amplitude.
Amplitude becomes the active function and the preset value for
amplitude is displayed in the active entry area.
2. Enter −5 using the numeric
keypad and press the dBm
softkey.
The new power level (-5.00 dBm) is shown in both the
AMPLITUDEarea and the active entry area of the display.
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Getting Started
ESG Family Signal Generators
Setting Up a Digital Modulation in the GSM Format
Selectin g th e Da ta For m a t
1. Press Mode. Then press the
following softkeys:
This selects the GSM communications standard.
Real Time I/Q Baseband (if it
appears) > TDMA > GSM.
2. Press the
This toggles the Data Format Pattern Framed softkey from
Pattern to Framed. When you select Framed for bursting the
frame envelope, you will be transmitting framed data. This means
that you will be bursting the timeslots that you have activated and
there will be no RF carrier during the off timeslots. Notice that
Configure Timeslots has become an active softkey.
Data Format Pattern Framed
softkey.
Settin g Up Tim eslot 0
1. Observe the GSM Timeslot
Patternon the display.
Notice that the preset condition for timeslot #0 has the timeslot
turned on and configured as a Normal channel.
2. Press the Configure Timeslots
softkey and observe the softkey
menu.
The Timeslot # softkey shows that timeslot #0 is selected as
the active timeslot. The Timeslot Off On softkey shows that
timeslot #0 is turned on. Finally, the Timeslot Type softkey
shows that timeslot #0 is configured as a Normal channel.
3. Press the Timeslot Type softkey.
4. Press the Custom softkey.
Another menu of softkeys is displayed.
This changes the timeslot type to Custom timeslot and
automatically returns you to the previous softkey menu. Notice
that the Timeslot Type softkey has changed from Normal to
Custom. Also notice that the display shows timeslot #0
configured as a Custom timeslot.
5. Press the Configure Custom
Another menu is displayed showing you data choices for the
timeslot’s transmission. Notice that the display has changed,
showing you a visual representation of the timeslot. Directly
below the visual representation of the timeslot, you should see
Data: PN9. PN9 is the default timeslot transmission data.
softkey.
1-12
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ESG Family Signal Generators
Getting Started
Setting Up a Digital Modulation in the GSM Format
6. Press the FIX4 softkey.
This changes the transmitted data to a fixed 4-bit repeating
sequence. The default 4-bit repeating sequence of 0000is
shown in the active entry area of the display.
7. Enter 1010 using the numeric
keypad and press the Enter
softkey.
This changes the pattern from 0000 to 1010. Directly below the
visual representation of the timeslot, you should see
Data: 1010.
Settin g Up Tim eslot 7
1. Press Return.
This moves the softkey menu up one level.
2. Press the Timeslot # softkey.
Then enter 7 using the numeric
keypad and press the Enter
softkey.
This selects timeslot #7 as the active timeslot. (You can also use
the arrow keys to select the timeslots.) The current active timeslot
(#7) is displayed in the active entry area.
3. Press the Timeslot Off On
This toggles the Timeslot Off On softkey from Off to On.
softkey.
Notice that the display now shows that timeslot #7 is turned on.
4. Press the Timeslot Type softkey.
5. Press the Normal softkey.
Another menu of softkeys is displayed.
This changes the timeslot type to a Normal timeslot and
automatically returns you to the previous softkey menu. Notice
that the Timeslot Type softkey has changed from Custom to
Normal. Also notice that the display shows timeslot #7
configured as a Normal timeslot.
6. Press the Configure Normal
Another menu of softkeys is displayed, allowing you to change
the E, S, and TS fields for the Normal timeslot.
softkey.
7. Press the following softkeys:
E > Other Patterns > 4 1’s & 4 0’s.
This fills the E field with a repeating sequence of four 1’s followed
by four 0’s. Directly below the visual representation of the
timeslot, you should see E: P4.
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Getting Started
ESG Family Signal Generators
Setting Up a Digital Modulation in the GSM Format
Tu r n in g On th e GSM For m a t a n d th e Mod u la tion
The signal generator is now configured to burst two uplink timeslots with a −5.0 dBm, GMSK
digitally modulated carrier at 891 MHz. Follow these remaining steps to output the framed
data.
1. Press Return twice.
This moves the softkey menu up two levels. The first GSM
softkey menu should be displayed. (The first softkey in this menu
is GSM Off On.)
2. Press the GSM Off On softkey.
This toggles the GSM Off On softkey from Off to On. At this
time the internal baseband generator generates the internal data
patterns that you have configured for timeslots 0 and 7.
A message is displayed while this process is taking place. Notice
also that the following display annunciators are turned on:
• GSMindicates that you have enabled the GSM standard.
• I/Qindicates that I/Q modulation is being generated.
• ENVLPindicates that burst is activated for transmitting
framed data.
3. Press RF On/Off.
Notice that the display annunciator changes from RF OFFto
RF ON. The modulated signal is now available at the
RF OUTPUT connector.
1-14
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ESG Family Signal Generators
2
Exp lor in g th e User In ter fa ce
This chapter provides you with an overview of your signal generator’s user interfaces:
•
•
•
front panel hardkeys and connectors
display fields and annotations
rear panel connectors
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Exploring the User Interface
ESG Family Signal Generators
Front Panel
Fr on t Pa n el
The following pages describe the numbered items shown in the figure below.
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ESG Family Signal Generators
Exploring the User Interface
Front Panel
1. EXT 1 INP UT
2. EXT 2 INP UT
3. Help
This female BNC input connector accepts a 1-V signal for FM,
pk
ΦM, and AM.
This female BNC input connector accepts a 1-V signal for FM,
pk
ΦM, AM, and pulse modulation.
Press this hardkey for a short textual description of the function of
the front panel hardkeys and softkeys. Press this key again and you
will be returned to normal instrument operation.
4. Tr igger
Press this hardkey to begin an event (such as a step or list sweep).
This key must first be selected as the method for activating an event
by pressing the Trigger Key softkey, located in the softkey menus
associated with the event.
5. LF OUTP UT
This female BNC connector is the output connector for modulation
signals generated by the LF (low frequency) source function
generator.
6. Mod On /Off
7. RF OUTP UT
This hardkey toggles all modulation signals on and off.
This female Type-N connector is the output connector for RF
signals.
8. RF On /Off
This hardkey toggles the RF signal on and off at the RF OUTPUT
connector.
9. Nu m er ic
Keyp a d
The numeric keypad consists of the digit keys (0 through 9), a
decimal point key, and a backspace key. The backspace key has dual
functions for both backspacing and changing the sign of a value
between positive and negative. Use these keys whenever the active
function requires a value input.
10. Ar r ow Keys
The up and down arrow keys increase or decrease a numeric value.
You can also use these keys to scroll through displayed lists to select
items. The left and right arrow keys choose the highlighted digit in
the active entry area of the display; that digit can be modified by the
up and down arrow keys or the knob. You can also use these keys in
a list to select items in a row.
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Exploring the User Interface
ESG Family Signal Generators
Front Panel
11. Retu r n
The Return key cancels the current active function and moves you
from your current softkey menu to the softkey menu that precedes
it.
12. Disp la y
Con tr a st
Press this key and hold it down to cause the display background to
darken in comparison to the text on the display.
Decr ea se
13. Disp la y
Con tr a st
Press this key and hold it down to cause the display background to
brighten in comparison to the text on the display.
In cr ea se
14. Loca l
Press this key to return the signal generator to local (front panel)
control from remote operation.
15. P r eset
Press this key to set the signal generator to a known state (either
the factory-defined state or a user-defined state).
16. Sta n d by LED
This yellow LED lights when the instrument is in standby
condition. In standby, the power switch is off but the instrument is
still connected to the main power circuit by way of the power cord.
17. Lin e Pow er
LED
This green LED lights when power is cycled on to the signal
generator.
18. Pow er Sw itch
19. Q INP UT
Press this hardkey to turn power to the signal generator either on
(green LED on) or to standby (yellow LED on).
This connector accepts an externally supplied, analog,
quadrature-phase component of I/Q modulation. This female BNC
connector is provided only on ESG-D and ESG-DP Series Signal
Generators.
20. I INP UT
This connector accepts an externally supplied, analog, in-phase
component of I/Q modulation. This female BNC connector is
provided only on ESG-D and ESG-DP Series Signal Generators.
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ESG Family Signal Generators
Exploring the User Interface
Front Panel
21. Disp la y
The LCD display provides information on the current instrument
state such as modulation status, frequency and amplitude settings,
status indicators, and error messages. Softkey labels corresponding
to their adjacent keys are located on the right-hand side of the
display.
22. Hold
Press this hardkey to deactivate the currently active function and
blank the softkey menu. Once Hold is pressed, the front panel knob,
the arrow keys, and the numeric keypad have no effect. To return to
normal operation, press a function or menu hardkey.
23. Softk eys
24. Kn ob
Press a softkey to activate the function indicated by the
corresponding label on the display.
The knob increases or decreases a numeric value. Any of the values
that can be set through the numeric keypad or the step keys can
also be set with the knob.
25. Am p litu d e
26. Fr equ en cy
27. Sa ve
Press this hardkey to activate the power level amplitude function so
that you can change the amplitude of the RF output.
Press this hardkey to activate the frequency function so that you
can change the frequency of the RF output.
This hardkey lets you save up to 100 different instrument states in
a combination of 100 memory registers and 10 register sequences.
The number of states you can save, however, is limited by the size of
whatever else is stored in the file system.
28. Men u Keys
These hardkeys provide access to the signal generator’s primary
functionality. Press these keys for access to softkey menus where
you can configure modulations, step and list sweeps, and various
frequency and power capabilities.
29. In cr Set
Press this hardkey to toggle between the current active function and
the increment size for that function. With increment size selected,
you can change the current increment value.
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Exploring the User Interface
ESG Family Signal Generators
Front Panel
30. Reca ll
This hardkey lets you restore any instrument state that you
previously saved in a memory register. You can save up to 100
different instrument states in a combination of 100 memory
registers and 10 register sequences. The number of states you can
save, however, is limited by the size of whatever else is stored in the
file system.
31. DATA In p u t
The TTL/CMOS-compatible DATA connector accepts an externally
supplied data input for digital modulation applications. This female
BNC connector is provided only on instruments with Option UN8.
32. DATA CLOCK
In p u t
The TTL/CMOS-compatible DATA CLOCK connector accepts an
externally supplied data-clock input for digital modulation
applications. This female BNC connector is provided only on
instruments with Option UN8.
33. SYMBOL SYNC
In p u t
The CMOS-compatible SYMBOL SYNC connector accepts the
digital-modulation symbol synchronization signal from an external
source. This female BNC connector is provided only on instruments
with Option UN8.
34. P ULSE IN
This connector accepts an externally supplied TTL-compatible pulse
signal. The pulse signal is activated with the Fast Pulse Off On
softkey or via SCPI command. The maximum input for this
connector is ±15 volts. This female BNC connector is provided only
on instruments with Option 1E6.
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ESG Family Signal Generators
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Display
Disp la y
The following pages describe the numbered items shown in the figure below.
1. Fr equ en cy
Ar ea
The current CW frequency setting is shown in this portion of the
display.
2. Am p litu d e Ar ea
The current output power level setting is shown in this portion of
the display.
3. Softk ey La bels
These labels define the function of the corresponding softkeys
immediately to the right of the label.
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ESG Family Signal Generators
Display
4. Er r or Messa ges
Ar ea
Abbreviated error messages are reported in this space. When
multiple error messages occur, only the most recent message
remains displayed. All of the reported error messages with details
can be viewed by pressing Utility > Error Info >
View Next Error Message.
5. Text Ar ea
This area is used to display status information about the signal
generator such as the modulation status, to enter information such
as creating sweep lists, and to manage information such as
displaying the catalog of files and deleting unwanted files.
6. Active En tr y
Ar ea
The current active function is shown in this area. For example, if
frequency is the active function, the current setting will be
displayed in the active entry area and that setting will change as
you enter a new value.
7. An n u n cia tor s
The display annunciators show the status of some of the signal
generator functions and indicate error conditions of the instrument.
The following annunciators are available:
φM
This annunciator appears when phase modulation is turned on.
ALC OFF
This annunciator appears when the automatic leveling control
(ALC) circuit is disabled.
AM
This annunciator appears when amplitude modulation is turned on.
ARMED
This annunciator appears when a sweep has been initiated and the
signal generator is waiting for the sweep trigger event.
ATTEN HOLD
BERT
This annunciator appears when the attenuator hold function is
turned on. When this function is on, the attenuator is frozen at its
current setting.
This annunciator appears whenever the Option UN7, bit error rate
test (BERT), or Option 300, base station BERT extension, functions
are turned on.
Digital
Modulation
Annunciators
An annunciator appears here when a digital modulation is on.
The exact annunciator depends on the modulation type, and is
documented in the manual that addresses that modulation.
Only one modulation con be on at a time, so sharing an annunciator
location is not a problem.
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Display
ENVLP
ERR
This annunciator appears if the burst envelope modulation is
turned on. This annunciator is present only on ESG-D and ESG-DP
Series Signal Generators.
This annunciator appears when an error message is placed in the
error queue. This annunciator will not turn off until you have either
viewed all of the error messages or cleared the error queue. You can
view and delete error messages using the Utility menu.
EXT1 LO/HI
EXT2 LO/HI
EXT REF
This annunciator toggles between EXT1 LO and EXT1 HI. This
annunciator appears if the AC-coupled signal to the EXT 1 input is
less than 0.97 V or greater than 1.03 V
.
pk
pk
This annunciator toggles between EXT2 LO and EXT2 HI. This
annunciator appears if the AC-coupled signal to the EXT 2 input is
less than 0.97 V or greater than 1.03 V
.
pk
pk
This annunciator appears when an external 1, 2, 5, or 10 MHz
frequency reference is in use.
FM
This annunciator appears when frequency modulation is turned on.
I/Q
This annunciator appears when I/Q modulation is turned on. This
annunciator is present only on ESG-D and ESG-DP Series Signal
Generators.
L
The L annunciator is turned on when the signal generator is in the
listen mode and is receiving information or commands over the
GPIB or RS-232.
MOD OFF
This annunciator toggles between MOD OFF and MOD ON and is
always visible in the display. This annunciator indicates whether
the modulations that you have enabled are modulating the RF
carrier.
OVEN COLD
This annunciator appears when the temperature of the internal
ovenized reference oscillator (ESG-AP, ESG-DP, and Option 1E5)
has dropped below an acceptable level.
PULSE
R
This annunciator appears when pulse modulation is turned on.
The R annunciator appears when the signal generator is in remote
GPIB operation.
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Display
RF OFF
This annunciator toggles between RF OFF and RF ON and is
always visible in the display. This annunciator indicates whether
the RF signal is present at the RF OUTPUT connector.
S
The S annunciator appears when the signal generator has
generated a service request (SRQ) over the GPIB.
SWEEP
T
This annunciator appears when the signal generator is sweeping in
list or step mode.
The T annunciator appears when the signal generator is in the talk
mode and is transmitting information over the GPIB or RS-232.
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ESG Family Signal Generators
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Rear Panel
Rea r Pa n el
The following pages describe the numbered items shown in the figure below.
1. AC Pow er
Recep ta cle
The power cord receptacle accepts a three-pronged cable that is
shipped with the instrument. The line voltage is connected here.
2. GP IB
The GPIB connector allows communications with compatible
devices such as external controllers. It is functionally equivalent to
the AUXILIARY INTERFACE connector.
3. SYMBOL SYNC
OUT
The TTL/CMOS-compatible SYMBOL SYNC OUT connector
outputs a symbol synchronization pulse, one data-clock period wide,
for use in digital modulation applications. This female BNC
connector is present only on instruments with Options UND or
UN8. With Option 201 you can select from several different output
signals for this connector.
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Rear Panel
4. AUXILIARY
INTERF ACE
This male DB-9 connector is an RS-232 serial port that can be used
for controlling the signal generator remotely. It is functionally
equivalent to the GPIB connector.
5. DATA CLK OUT
The TTL/CMOS-compatible DATA CLK OUT connector outputs a
clock signal for digital modulation data. This female BNC connector
is present only on instruments with Options UND or UN8. With
Option 201 you can select from several different output signals for
this connector
6. SWEEP OUT
This female BNC connector provides a voltage range of 0 to +10 V.
When the signal generator is sweeping, the SWEEP OUT signal
ranges from 0 V at the beginning of the sweep to +10 V at the end of
the sweep regardless of the sweep width.
7. DATA OUT
The TTL/CMOS-compatible DATA OUT connector outputs digital
modulation data sourced from an externally supplied signal at the
DATA input or from the internal pattern generator. This female
BNC connector is present only on instruments with Options UND or
UN8. With Option 201 you can select from several different output
signals for this connector.
8. TRIGGER OUT
This female BNC connector outputs a TTL signal that is asserted
high at the start of a dwell sequence, or at the start of waiting for
the point trigger in manual sweep mode, and low when the dwell is
over, or when the point trigger is received, or once per sweep during
an LF sweep.
9. TRIGGER IN
10. 10 MHz IN
This female BNC connector accepts a TTL signal for triggering, such
as point-to-point in manual sweep mode or an LF sweep in external
sweep mode.
This female BNC connector accepts a −3.5 to +20 dBm signal from
an external timebase reference that is within 10 ppm (standard
timebase) or 1 ppm (high stability timebase).
11. 10 MHz OUT
This female BNC connector provides a nominal signal level of
+7 dBm ±2 dB, and an output impedance of 50Ω. The accuracy is
determined by the timebase used.
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12. PATTERN
TRIG IN
This input can accept either a TTL/CMOS low to TTL/CMOS high or
TTL/CMOS high to TTL/CMOS low edge trigger. With Option UN8
this input triggers the internal digital modulation pattern generator
to start a single pattern output or to stop and re-synchronize a
pattern that is being continuously output. With Option UND this
input is the external trigger source for all ARB waveform generator
triggers. With Option 201 this connector is used for system reset
trigger input.
13. BURST GATE
IN
The BURST GATE IN connector accepts a TTL or CMOS signal for
gating burst power in digital modulation applications. This female
BNC connector is present only on instruments with Options UND or
UN8. With Option 201 this connector is used for even second
synchronization input.
14. COHERENT
CARRIER OUT
This connector outputs RF that is not modulated with AM, pulse, or
I/Q modulation, but that is modulated with FM or ΦM. This SMA
connector is present only on ESG-D and ESG-DP Series Signal
Generators.
15. ALT P WR IN
This BNC connector accepts a CMOS signal for synchronization of
external data and alternate power signal timing. This connector is
active only with Options UNA or 201. With Option 201 this
connector is used for Long Code State Latch strobe input.
16. EVENT 1
With Option UN8 turned on, this TTL/CMOS-compatible connector
outputs a pulse that can be used to trigger the start of a data
pattern, frame, or timeslot. With Option UN5 turned on, an even
second output is generated every two seconds indicating the
beginning of each short code sequence. With Option UND turned on,
a marker is output whenever a Marker 1 is turned on in the
waveform. With Option 201 you can select from several different
output signals for this connector.
17. EVENT 2
This TTL/CMOS-compatible connector outputs a data enable signal
for gating external equipment. With Option UN5 turned on, a
marker is output every 26.67 ms, corresponding to the start of each
short code. With Option UND turned on, a marker is output
whenever a Marker 2 is turned on in the waveform. With
Option 201 this connector is used for system reset output.
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Rear Panel
18. BASEBAND
GEN REF IN
With Option UN8 enabled, the BASEBAND GEN REF IN connector
accepts a 0 to +20 dBm sinewave or TTL squarewave signal from an
external 13-MHz timebase reference. This female BNC connector is
present only on instruments with Options UND or UN8.
19. I OUT
The I OUT connector outputs the analog, in-phase component of I/Q
modulation from the internal baseband generator. This female BNC
connector is present only on instruments with Options UND or
UN8.
20. Q OUT
The Q OUT connector outputs the analog, quadrature-phase
component of I/Q modulation from the internal baseband generator.
This female BNC connector is present only on instruments with
Options UND or UN8.
21. BER MEAS
END
The BER MEAS END connector outputs a signal that indicates the
status of the bit-error-rate (BER) measurements. This female SMB
connector is present only on instruments with Option UN7.
22. BER TEST OUT
23. BER ERR OUT
24. BER NO DATA
The BER TEST OUT connector outputs a signal that indicates the
test result of the pass/fail judgement of the bit-error-rate
measurements. This female SMB connector is present only on
instruments with Option UN7.
The output of the BER ERR OUT connector is normally low. When
the maximum data rate mode is set to 2 Mbps, the BER ERR OUT
connector outputs pulse signals that indicate errors. This female
SMB connector is present only on instruments with Option UN7.
The BER NO DATA connector outputs a signal that indicates the
“no data” status. The no data status is reported when there has been
no clock input for more than 3 seconds or there has been no data
change for more than 200 bits. This female SMB connector is
present only on instruments with Option UN7.
25. BER SYNC
LOSS
The BER SYNC LOSS connector outputs a signal that indicates the
synchronization loss state. This female SMB connector is present
only on instruments with Option UN7.
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Rear Panel
26. BER DATA IN
27. BER CLK IN
28. BER GATE IN
Use this connector to input the data streams for the bit-error-rate
measurements. This female BNC connector is present only on
instruments with Option UN7.
Use this connector to input the clock signal for the bit-error-rate
measurements. This female BNC connector is present only on
instruments with Option UN7.
Use this connector to input the clock gate signal for the
bit-error-rate measurements. The connector can be enabled or
disabled by a softkey or an GPIB command. This female BNC
connector is present only on instruments with Option UN7.
29. 321.4 MHz IN
Use this connector to input a downconverted 321.4 MHz GSM signal
for base transceiver station (BTS) loopback measurements. This
female SMB connector is present only on instruments with
Option 300.
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