Spectra CR600 Leaflet

Page of 2
Features and Functions
0
7. Audio Port—is the opening the
sound comes out of.
0
8. 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.
0
9. Remote Contacts—provides
grade-display signals to a radio
remote control.
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.
LCD/LED/Audio Information (cont.)
CR600 Receiver
User Guide
www.trimble.com
1. Power/Audio Button—is a multi-
functional button that turns the
receiver on/off and allows you to
adjust the audio volume.
2. Grade-Sensitivity Button—allows
you to cycle through receiver’s on-
grade sensitivities.
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. 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.
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. Liquid Crystal Display (LCD)—shows the elevation, grade sensitivity,
audio, out-of-level, and battery status.
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.
LCD/LED/Audio Information
LCD Readout
Function
Audio Output
LED Indication
6 to 7 
Machine: coarse high
Fast beeping tone
High LEDs: solid red
down arrows
5 to 7 
Machine: medium high
Fast beeping tone
High LEDs: solid red
down arrows
4 to 7 
High
Fast beeping tone
High LEDs: solid red
down arrows
3 to 5 
Machine: fine high
Fast beeping tone
High LEDs: flashing red
down arrows
2 to 3 
Medium high
Fast beeping tone
High LEDs: flashing red
down arrows
Center bar & 
Fine high
Fast beeping tone
High LEDs: flashing red
1 down arrow
Center bar
On-grade
Continuous tone
Flashing green
Center bar & 
Fine low
Slow beeping tone
Low LEDs: flashing red
1 up arrow
2 to 3 
Medium low
Slow beeping tone
Low LEDs: flashing red
up arrows
3 to 5 
Machine: fine low
Slow beeping tone
Low LEDs: flashing red
up arrows
4 to 7 
Low
Slow beeping tone
Low LEDs: solid red
up arrows
5 to 7 
Machine: medium low
Slow beeping tone
Low LEDs: solid red
up arrows
6 to 7 
Machine: coarse low
Slow beeping tone
Low LEDs: solid red
up arrows
LCD Readout
Function
Audio Output
LED Indication
Level vial with 
Laser out-of-level alert
High/low beeping tone  ———
out-of-level 
(audio must be on)
bubble
Battery
Low battery
N/A
N/A
Horn
Audio on soft/loud
Single beep
——— 
Flashing 
Audio off at on-grade
———
———
horn
Flashing 
Lost beam indication
N/A
Flashing red
arrow
———
Line alert on
Beep on 1-Hz rate
All LEDs flash for 
3 seconds
———
Line alert off
N/A
Both red LEDs flash
All icons on the 
Power on
Single beep
All LEDs flash for 
LCD appear for 
1 second
1 second
Flashing fine
Ultra-fine grade 
N/A
N/A
sensitivity
Flashing fine 
Super-fine grade 
N/A
N/A
and medium
sensitivity
Fine
Fine grade sensitivity
N/A
N/A
Medium
Medium grade 
N/A
N/A
sensitivity
Coarse
Coarse grade 
N/A
N/A
sensitivity
Fine + 
Machine fine 
N/A
N/A
Machine Symbol
grade sensitivity
Medium + 
Machine coarse 
N/A
N/A
Machine Symbol
grade sensitivity
How to Use the Receiver
Installing the Batteries
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.
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.
Rod-Mounted and Hand-Held Mode
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 3
3
/
4
in.) below the laser beam. The green LEDs flash when the
receiver is on grade.
5
10
12
11
7
9
10
8
2
1
6
4
5
3
11. LEDs—show the position of the 
receiver relative to the laser beam 
(above grade, on grade, or below 
grade).
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.
Learning the Receiver Functions
Standard
Turning On/Off the Receiver
1. Press the power/audio button to turn on the receiver.
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.
2. Press and hold the power/audio button for 2 seconds to turn off 
the receiver.
Selecting the Audio Function
The receiver always starts up in the last selected audio level (the factory
default setting is soft).
1. Press the power/audio button repeatedly to cycle through the audio levels,
which include off, soft, and loud.
1. Turn the battery-housing knob
counterclockwise.
2. Remove the battery-housing door.
3. Insert the battery as shown noting
the plus (+) and minus (–) diagram
inside the housing.
4. Put the battery-housing door in
place. Push in the knob and turn 
it clockwise.
– 5 –
– 2 –
– 6 –
– 3 –
– 7 –
– 4 –
– 8 –
Machine-Mounted Mode
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
(
13
/
16
and 1 in.) of being on grade in coarse mode. The high red LEDs light
continuously when the laser beam is between 15 and 95 mm (
9
/
16
and 3
3
/
4
in.) of being on grade in fine mode, and between 20 and 95 mm (
13
/
16
and
3
3
/
4
in.) of being on grade in coarse mode.
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.