Features and Functions
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1. Power/Audio Button—is a multi-
functional button that turns the
receiver on/off and allows you to
adjust the audio volume.
07. Audio Port—is the opening the
LCD/LED/Audio Information
sound comes out of.
LCD Readout
Function
Audio Output
LED Indication
CR600 Receiver
08. Battery Housing—holds three AA
alkaline or Ni-Cd batteries. The
battery-housing door is also used
to attach the receiver to a custom
grade rod, magnetic mount, or the
general-purpose clamp.
6 to 7
down arrows
Machine: coarse high
Fast beeping tone
High LEDs: solid red
11
3
5
User Guide
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6
2. Grade-Sensitivity Button—allows
you to cycle through receiver’s on-
grade sensitivities.
5 to 7
down arrows
Machine: medium high Fast beeping tone
High LEDs: solid red
High LEDs: solid red
High LEDs: flashing red
High LEDs: flashing red
High LEDs: flashing red
7
8
4 to 7
down arrows
High
Fast beeping tone
Fast beeping tone
Fast beeping tone
Fast beeping tone
10
9
The hand-held grade sensitivities
include fine: 1.5 mm (1/16 in.);
medium: 3 mm (1/8 in.); and coarse:
6 mm (1/4 in.). The machine grade
sensitivities include: fine 10 mm
(3/8 in.) and coarse: 25 mm (1 in.). This button also allows you to select
ultra-fine: 0.1 mm (0.004 in.) and super-fine: 1 mm (1/32 in.) grade
sensitivity when used with the power/audio button. The machine grade-
sensitivity mode has an offset for on-grade. On-grade is 50 mm (2 in.)
below the top of the receiver and is not centered in the photocell.
3 to 5
down arrows
Machine: fine high
Medium high
Fine high
09. Remote Contacts—provides
grade-display signals to a radio
remote control.
2 to 3
down arrows
10. Photocell—detects the laser beam
when it strikes the receiver. The
photocell allows you to face the
LCD and LEDs and have access to
the control buttons, regardless of
your position relative to the laser
beam. If the receiver does not
detect the laser beam for 30
minutes, the receiver shuts off
automatically.
Center bar &
1 down arrow
Center bar
On-grade
Fine low
Continuous tone
Slow beeping tone
Flashing green
Center bar &
1 up arrow
Low LEDs: flashing red
2 to 3
up arrows
Medium low
Slow beeping tone
Slow beeping tone
Slow beeping tone
Slow beeping tone
Slow beeping tone
Low LEDs: flashing red
Low LEDs: flashing red
Low LEDs: solid red
Low LEDs: solid red
Low LEDs: solid red
3. Offset Distance Scale—coincides with the LCD bar display and is used
to work at an offset distance from on-grade. Three offset scales, which
include metric, hundredths of a foot, and inches, are available. Simply
place the decal appropriate for your needs on the right side of the LCD.
5
3 to 5
up arrows
Machine: fine low
Low
10
4 to 7
up arrows
11. LEDs—show the position of the
receiver relative to the laser beam
(above grade, on grade, or below
grade).
4. Marking Notches—align with the on-grade portion of the photocells
and are used to mark elevation readings. The marking notches are 50 mm
(2 in.) from the top of the receiver.
5 to 7
up arrows
Machine: medium low
Machine: coarse low
6 to 7
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5. Liquid Crystal Display (LCD)—shows the elevation, grade sensitivity,
audio, out-of-level, and battery status.
up arrows
12. Remote Mounting Channels—
provide a recess for the radio remote control mounting guides to fit
into so the radio remote control can be attached to the receiver.
6. Groove—is the channel that the grade-rod tongue fits into so the receiver
can be attached to the grade rod or magnetic mount.
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Note: The receiver beeps quickly when the receiver is above the laser
beam, slowly when below it, and continuously when centered in the laser
beam or on grade.
Selecting the Grade Sensitivity
The receiver always starts up in the last selected on-grade sensitivity (the
factory default setting is fine).
1. Press the grade-sensitivity button repeatedly to cycle through the on-grade
sensitivities, which include hand-held: fine, medium, coarse; and
machine-mounted: fine, and coarse.
2. To select ultra-fine or super-fine on-grade sensitivities, press and hold the
grade-sensitivity and power/audio buttons for 2 seconds.
Note: As you hold the buttons, the
receiver cycles through the ultra-fine
and super-fine on-grade sensitivities.
3. Release both buttons when the
sensitivity that is appropriate for
your application needs appears in
the LCD.
Machine-Mounted Mode
LCD/LED/Audio Information (cont.)
How to Use the Receiver
Installing the Batteries
1. Turn the battery-housing knob
counterclockwise.
In fine mode, the red LEDs flash when the laser beam is more than 15 mm
(9/16 in.) of being on grade. In coarse mode, the red LEDs flash when the
laser beam is more than 20 mm (13/16 in.) of being on grade. The low red
LEDs light continuously when the laser beam is between 15 and 25 mm
(9/16 and 1 in.) of being on grade in fine mode, and between 20 and 25 mm
LCD Readout
Function
Audio Output
LED Indication
Level vial with
out-of-level
bubble
Laser out-of-level alert
High/low beeping tone ———
(audio must be on)
2. Remove the battery-housing door.
Battery
Horn
Low battery
N/A
N/A
(
13/16 and 1 in.) of being on grade in coarse mode. The high red LEDs light
3. Insert the battery as shown noting
the plus (+) and minus (–) diagram
inside the housing.
Audio on soft/loud
Audio off at on-grade
Single beep
———
———
———
continuously when the laser beam is between 15 and 95 mm (9/16 and 33/4
in.) of being on grade in fine mode, and between 20 and 95 mm (13/16 and
33/4 in.) of being on grade in coarse mode.
Flashing
horn
4. Put the battery-housing door in
place. Push in the knob and turn
it clockwise.
Flashing
arrow
Lost beam indication
Line alert on
N/A
Flashing red
The LEDs can also be used for lost-beam indication. If the LEDs are turned
on, the top or bottom red LEDs flash for 20 seconds to show the direction
to move the receiver to reacquire the beam. For additional lost-beam
indication, a bank of up or down arrows in the LCD flashes for 20 seconds
to show the direction to move the receiver to reacquire the beam.
1. Simultaneously press the grade-
sensitivity and power/audio buttons
repeatedly to cycle through the LED
settings: bright, dim, and off.
———
Beep on 1-Hz rate
All LEDs flash for
3 seconds
Learning the Receiver Functions
———
Line alert off
Power on
N/A
Both red LEDs flash
All icons on the
LCD appear for
1 second
Single beep
All LEDs flash for
1 second
Standard
Turning On/Off the Receiver
1. Press the power/audio button to turn on the receiver.
Flashing fine
Ultra-fine grade
sensitivity
N/A
N/A
N/A
N/A
Note: When the receiver is initially turned on, all LCD symbols and
LEDs are turned on for one second (diagnostic mode). After the
diagnostic mode is complete, all the symbols of the last selected modes
appear.
Flashing fine
and medium
Super-fine grade
sensitivity
Selecting the LED Settings
The LEDs show the position of the
receiver relative to the laser beam. Three LED settings can be selected from:
bright, dim, and off. Dim is the factory default setting. Turning off the
LEDs extends battery life.
Fine
Fine grade sensitivity
N/A
N/A
N/A
N/A
Medium
Medium grade
sensitivity
2. Press and hold the power/audio button for 2 seconds to turn off
the receiver.
Coarse
Coarse grade
sensitivity
N/A
N/A
N/A
N/A
N/A
N/A
Rod-Mounted and Hand-Held Mode
Selecting the Audio Function
The red LEDs flash when the receiver is within 13 mm (1/2 in.) of being on
grade. The low red LEDs light continuously when the receiver is between
13 and 25 mm (1/2 in. and 1 in.) of being above the laser beam. The high
red LEDs light continuously when the receiver is between or 13 and 95 mm
(1/2 and 33/4 in.) below the laser beam. The green LEDs flash when the
Fine +
Machine fine
The receiver always starts up in the last selected audio level (the factory
default setting is soft).
Machine Symbol grade sensitivity
Medium + Machine coarse
Machine Symbol grade sensitivity
1. Press the power/audio button repeatedly to cycle through the audio levels,
which include off, soft, and loud.
receiver is on grade.
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