– 2 – – 3 – – 4 –
–
5 – – 6 –
– 7 – – 8 –
Features
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.
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.
5. Photocell – detects the laser beam when
it strikes the receiver.
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.
2
1
3
4
8
9
10
5
6
11
12
7
Features (cont.)
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.
12. Battery Door Latch– opens the battery compartment.
1. Release the battery door using your fingers, a coin, or a screwdriver. Open
the door.
2. Install/Remove the 2 AA batteries noting the positive (+) and negative (–)
diagram on the bottom of the battery housing.
3. Close the battery door and latch it shut.
Learning the Receiver Functions
Turning On/Off the Receiver
Low Battery
Above Grade
On Grade
Below Grade
Audio On
Using the Receiver with a Laser
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).
2. Position the receiver so that its photocell faces the laser.
3. Move the receiver up/down until the LCD and LEDs show an on-grade
reading.
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.
1. Press the power/audio button
to turn on the receiver.
Note: When the receiver is
initially turned on/off, all LCD
symbols, LEDs, and the audio
signal are turned on for one second.
2. Press and hold the power/audio
button for one second to turn off
the receiver.
Selecting the Audio Function
The receiver always starts up with the audio mode (loud) active.
1. Press the power/audio button repeatedly to cycle the audio level - loud, low
or off.
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.
LCD/LED/Audio Information
LCD Readout Function Audio Output
LED
Indication
Down arrow High Fast beeping tone Top red LED:
solid
Center bar &
down arrow
Fine-high Fast beeping tone Top red LED:
flashing
Center bar On-grade Continuous tone Middle green
LED: solid
Center bar
& up arrow
Fine-low Slow beeping
tone
Bottom blue
LED: flashing
Up arrow Low Slow beeping
tone
Bottom blue
LED: solid
LCD
Indication
Battery Low battery N/A Flashing symbol
Horn Audio Loud Loud Solid symbol
Audio Low Low Flashing symbol
Audio Off None No symbol
Introduction
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.
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.
Your comments and suggestions are welcome; please contact us at:
Spectra Precision Division
8261 State Route 235
Dayton, Ohio 45424 U.S.A.
Phone: (937) 245-5600
(800) 538-7800
FAX: (937) 482-0030
Internet: www.trimble.com/spectra
HR220 Receiver
User Guide
www.trimble.com
•
How to Use the Receiver
Installing/Removing the Batteries
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