Product Manual

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LR60W PAIR mode:
To PAIR the RD20 with a LR60W, start RD20 PAIR mode as described in the
previous section. Start LR60W PAIR mode:
1. Make sure the receiver is in WIRELESS communications mode (see the
LR60W user guide)
2. Make sure the receiver is turned OFF
3. Press the ON-GRADE OFFSET and DEAD-
BAND keys, then while continuing to hold them
down press the POWER key at the same time.
When the receiver starts its power-up sequence let
up on the keys.
4. After the receiver completes its power up
sequence, the On-Grade LED will blink rapidly
indicating the receiver is in PAIR mode.
Wait about 5 seconds for the 2 units to PAIR to each other. When PAIR is
complete the rapid blink of the LEDS on both units will stop and normal
operation will start.
Features, Functions and Indications
RD20
Wireless Remote Display
User Guide
www.trimble.com
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Powering the RD20 and Remotely Turning Off the LR Receiver
The remote display gets its power from two “AA” internal batteries or from 6
to 30Vdc machine power via the supplied accessory power cable. When
operating from machine power, system reverse voltage and over-voltage
protection is built in. Switchover from internal batteries to machine power
and vice-versa is instant and automatic. No charging of the internal batteries
will occur when connected to machine power.
To turn on the unit, press the POWER button for 1 second. The unit will
beep and initialize a function test, after which the radio link status and receiver
deadband will be displayed.
To turn off the unit, press the POWER button again for 2 seconds. To turn
off the RD20 AND the LR receiver, press and HOLD the button for 4
seconds (NOTE: It’s not possible to turn on the LR receiver from the RD20).
The Low Battery LED (item 13) flashes to indicate the two AA internal
batteries should be changed.
Internal Batteries
1. Open the battery door by using a coin or your
thumbnail to release the battery door latch.
2. Insert two AA batteries noting the plus (+) and
minus (-) diagrams inside the battery housing.
3. Close the battery door. Push down on the door
until the latch “clicks” into the locked position.
Introduction
Thank you for choosing the Spectra Precision
®
RD20 Wireless Remote
Display. It is designed to work with the LR30W, LR50W and LR60W laser
receivers, and it can be quickly mounted in the cab of the machine for easy
viewing. The large, very bright (adjustable) blue, red and green LEDs provide
instant elevation feedback, even from the corner of the eye. The loud,
adjustable speaker also provides audible tones for high, low and on-grade for
use without viewing the receiver or remote display at all.
In addition to providing grade, plumb and tilt information (where applicable),
the RD20 can be used to remotely set the receiver for optimal excavator
operation, to remotely match on-grade for easier benchmarking, and to
remotely match a tilt angle for easier sports fields construction. Please note
that the tilt angle indication and matching can be displayed for LR50W and
LR60W receivers only.
The RD20 gets its power from the machine or from 2 internal AA batteries.
Automatic switch-over from machine power to internal batteries occurs
instantly, allowing the display to be quickly detached and moved to another
machine or for remote monitoring.
Before using this remote display, be sure to read this user guide carefully.
Included is information about setting up, using and maintaining the remote
display. Also included in this manual are Notes, which indicate important
information unrelated to safety.
Your comments and suggestions are welcome; please contact us at:
Trimble - Spectra Precision Division
5475 Kellenburger Road
Dayton, Ohio 45424-1099 U.S.A.
Phone: [phone] or [phone]
Fax: [phone]
Internet: www.trimble.com
Mounting Hardware
The mounting hardware that is supplied with the RD20 includes a quick
disconnect mounting plate, magnets and double-sided tape. An optional
swivel mount with suction cup is also available. Choose the mounting
hardware appropriate for your situation.
Position the remote display in the machine’s cab so that you can easily see or
hear the display while operating the machine. Make sure the remote display
doesn’t obstruct other functions.
Quick Disconnect Mounting Plate
1. To install, slide the plate over the mounting screw and slide it to the left
until it locks into place.
2. To remove, press the locking tab away from the remote display and slide the
plate in the opposite direction.
Magnets
1. Install the provided screws through the 3 magnets
and the quick disconnect mounting plate as shown.
Screw torque should be limited to 135 n-cm
(12 in-lbs).
Tape / Fastening Strips
1. Clean the back of the quick disconnect mounting plate
and the area of the machine you want to mount the
remote display to.
2. Peel the protective backing from one of the adhesive
sides of the tapes, and apply the tapes to the mounting
plate as shown. Remove the protective backing from the
remaining sides of the tapes, and apply the mounting plate
to the machine.
Optional Swivel Mount w Suction Cup
1. The supplied screws can be used to install the swivel mount directly to the
machine, or the suction cup can be used.
Features, Functions and Indications
1. Audio Output (speaker)
2. Set Deadband
3. Set On-Grade Match
4. Set Excavator Mode (LR50W or LR60W only)
5. Set LR LED Brightness
6. Match Receiver Tilt (LR50W or LR60W only)
7. Tilt Display (LR50W or LR60W only)
8. RD20 Power On/Off, LR Power Off
9. Loudness Button
10. Set RD20 LED Brightness (combination press of Loudness and SET
buttons)
11. Level Bubble
12. Radio Link LED
13. Low Battery LED
14. Main Elevation / Deadband / Lost Radio Link display (Red for Above
Grade, Green for On-Grade and Blue for Below Grade LEDs)
15. MODE Button
16. SET Button
Radio PAIR to the LR30W, LR50W or LR60W
The RD20’s digital radio is required to be configured to the specific LR30W,
LR50W or LR60W it will be working with (required only once for each
device, and will only operate with one device at a time). If your RD20
shipped as part of a LR system it is pre-configured (PAIR’ed) at the factory,
and no action is required. If you want to PAIR your RD20 to another device
use the following directions.
To PAIR the RD20 with a LR30W, Start RD20 PAIR mode:
1. Make sure the RD20 is turned OFF
2. Press the MODE and SET keys at the same time, then press the POWER
key. When the RD20 starts its power-up sequence let up on all three keys.
3. After the RD20 completes its power up sequence, the Radio Link LED will
blink rapidly indicating the RD20 is in PAIR mode.
LR50W PAIR mode:
To PAIR the RD20 with a LR50W, start RD20 PAIR mode as described in the
previous section. Start LR50W PAIR mode:
1. Make sure the receiver is turned OFF
2. Press the ON-GRADE OFFSET and DEAD-BAND keys, then while
continuing to hold them down press the POWER key at the same time.
When the receiver starts its power-up sequence let up on the keys.
3. After the receiver completes its power up
sequence, the On-Grade LED will blink rapidly
indicating the receiver is in PAIR mode.
Wait about 5 seconds for the 2 units to PAIR to each
other. When PAIR is complete the rapid blink of
the LEDS on both units will stop and normal
operation will start.
Audio Output
The audio output (item 1) allows the elevation of the receiver to be monitored
without looking at the elevation display. The tone beeps quickly when the
receiver is above the laser beam, slowly when below it, and continuously when
centered in the laser beam (on-grade). A short beep is used to confirm a
button has been pressed and/or acceptance of a function. On off-tone longer
beep is used to indicate rejection of a requested function (such as an On-Grade
Match request when no laser beam is present). Loudness of the audio output
is set with the loudness button (item 9), and has 4 settings: Off, Low (75 db),
Medium (95db) and Loud (105db).
Radio Link Functions and Status
A good radio link is indicated by a short double-blink of the radio link LED
(item 12). If there is no link with the receiver, the RD20 will alternately flash
single high and low coarse LEDs with the two on-grade LEDs. If the receiver
loses link with the RD20, the receiver will alternately flash high and low coarse
LEDs with the green on-grade LEDs on the main elevation display (item 14).
NOTE: to use the receiver by itself (with no RD20), disable the link by
pressing the Deadband, Brightmess and Power keys at the same time.
Set Elevation Display Mode
The RD20 can operate in standard (multiple LEDs) or single LED modes.
Single LED mode greatly extends battery life when using the RD20’s internal
batteries for power. To toggle between the two modes, with the RD20
powered up press and hold the POWER and SET buttons simultaneously until
the LEDs flash (about 2 seconds). The RD20 ships from the factory in
standard display mode. The last selected mode is retained after a power cycle.
Set RD20 LED Brightness
Simultaneously press the Loudness and Set buttons to adjust the
brightness of the display and mode LEDs to bright, medium or dim.
The brightness setting will be indicated on the main elevation display
(item 14). The RD20 retains the last brightness setting after a power
cycle.
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Accessory Power Cable
1. The maximum extended length of the cable is 1.8m (6 ft).
2. Plug the small cable connector into the remote display power connector.
3. Plug the accessory connector into the machine’s accessory power socket.
LR30W PAIR mode:
1. Make sure the receiver is turned OFF
2. Press the BRIGHTNESS and DEAD-BAND keys, then while continuing to
hold them down press the POWER key at the same time. When the receiver
starts its power-up sequence let up on the keys.
3. After the receiver completes its power up
sequence, the On-Grade LEDs will blink rapidly
indicating the receiver is in PAIR mode.
Wait about 5 seconds for the 2 units to PAIR to each
other. When PAIR is complete the rapid blink of
the LEDS on both units will stop and normal
operation will start.