Features
Features (cont.)
Introduction
1. Power and Audio Button – turns the
receiver ON and OFF and changes the
audio to LOUD, LOW or OFF.
a. Automatic Shutoff - If the photocell
does not detect the laser beam for 30
minutes, the receiver shuts off
automatically.
2. Marking Notches (both sides) – align
with the on-grade portion of the
photocell and are used to mark elevation
readings. The marking notches are 50
mm (2 in.) from the top of the receiver.
Thank you for choosing the Spectra Precision® Laser Receiver HR220 from
the Trimble® family of precision instruments. The HR220 is a battery-operated
laser receiver that detects a pulsed line laser beam and indicates its position
relative to the beam using an LCD and simultaneous LEDs.
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8. Label – shows the serial number and manufacturing date.
9. Magnet—holds the receiver on a wall molding, cross-T, runner, etc.
10.LEDs – show the position of the receiver relative to the laser beam (above
grade [red], on grade [green] or below grade [blue]).
11.Battery Housing – holds 2 AA alkaline batteries.
HR220 Receiver
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User Guide
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Before using the receiver, be sure to read this user guide carefully. Included in
it is information about setting up, using, and maintaining the receiver. Also
included in this manual are CAUTIONS and Notes. Each of these words
represents a level of danger or concern. A CAUTION indicates a hazard or
unsafe practice that could result in minor injury or property damage. A Note
indicates important information unrelated to safety.
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12.Battery Door Latch– opens the battery compartment.
Your comments and suggestions are welcome; please contact us at:
3. Liquid Crystal Display (LCD) –
displays the elevation, power, audio and
battery status.
4. Bubble vials - aids in keeping receiver
level in both horizontal and vertical
planes.
Spectra Precision Division
8261 State Route 235
Dayton, Ohio 45424 U.S.A.
Phone: (937) 245-5600
(800) 538-7800
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FAX:
(937) 482-0030
5. Photocell – detects the laser beam when
it strikes the receiver.
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6. Audio Port – is the opening the sound
comes out of.
7. Clamp-Tab Recess – is the area that the
general-purpose clamp’s release tab fits
into.
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How to Use the Receiver
Learning the Receiver Functions
Using the Receiver with a Laser
Installing/Removing the Batteries
Turning On/Off the Receiver
LCD/LED/Audio Information
1. Press the power/audio button to turn on the receiver. Also make sure the
Receiver Mode indicator on the laser is ON (if not, press the RECEIVER
button on the laser).
LED
1. Press the power/audio button
to turn on the receiver.
LCD Readout Function
Audio Output Indication
Down arrow
High
Fast beeping tone Top red LED:
solid
Fast beeping tone Top red LED:
flashing
Continuous tone Middle green
LED: solid
Note: When the receiver is
initially turned on/off, all LCD
symbols, LEDs, and the audio
Above Grade
On Grade
2. Position the receiver so that its photocell faces the laser.
Center bar &
down arrow
Center bar
Fine-high
On-grade
Fine-low
Low
3. Move the receiver up/down until the LCD and LEDs show an on-grade
reading.
Audio On
Low Battery
Below Grade
signal are turned on for one second.
Note: The LCD shows a down arrow when the receiver is above the laser
beam, an up arrow when below it, and a horizontal line when centered in
the laser beam. The LED is red for above grade. green for on grade, and
blue for below grade.
2. Press and hold the power/audio
button for one second to turn off
the receiver.
Center bar
& up arrow
Up arrow
Slow beeping
tone
Slow beeping
tone
Bottom blue
LED: flashing
Bottom blue
LED: solid
LCD
Indication
Flashing symbol
Solid symbol
Flashing symbol
No symbol
1. Release the battery door using your fingers, a coin, or a screwdriver. Open
the door.
Selecting the Audio Function
The receiver always starts up with the audio mode (loud) active.
Battery
Horn
Low battery
Audio Loud
Audio Low
Audio Off
N/A
Loud
Low
2. Install/Remove the 2 AA batteries noting the positive (+) and negative (–)
diagram on the bottom of the battery housing.
1. Press the power/audio button repeatedly to cycle the audio level - loud, low
or off.
3. Close the battery door and latch it shut.
Note: If the audio function is on, 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.
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