Service manual

CHANNEL RECEIVER VOTER MODULE (cRVM)
6-3
March 2000
Part No. 001-3139-502
Table 6-1 cRVM OPERATION
Switch Section Description
S3 1
2
3
4
5
6
7
On - RVM1 enabled
Off - RVM1 closed
On - RVM2 enabled
Off - RVM2 closed
On - RVM3 enabled
Off - RVM3 closed
On - RVM4 enabled
Off - RVM4 closed
On - RVM5 enabled
Off - RVM5 closed
On - RVM6 enabled
Off - RVM6 closed
On - RVM7 enabled
Off - RVM7 closed
S5 1-5
6
6
7
8
cRVM Address**
Off - 2400 Baud link
to Normal MLM
On - 9600 baud link to
Remote MLM
Bit 8*
Bit 9*
S6 1-4 Bits 0-3*
S7 1-4 Bits 4-7*
* Bits of Go To FCC Channel Number.
** Only used for VDM recognition.
Table 6-2 RVM OPERATION
SWITCH SECTION DESCRIPTION
S3 1-3
4-7
8
RVM Address (1-7)
Not used
On - RVM
Off - cRVM
S5 1-5 cRVM Address (1-30)
Table 6-3 RVM ADJUST EE-POTS
Switch Section Description
S2 4 Off- Pulse EE-pots up
On- Pulse EE-pots down
S2 1-3 EE-pot select (CS1-CS6)
S1 Press for one pulse to EE-pot
S8 Reset
6.7 LED DEFINITION
The 4-pairs of Green and Yellow LEDs represent
Sites 1 through 4 (see Table 6-4). The Green LED just
below S4 is the power indicator LED. The two Yellow
LEDs define whether the RVM is a cRVM or RVM
(see Table 6-5). The bottom Green LED is the Call
LED (see Table 6-6).
6.7.1 SITE LED DEFINITION
6.7.2 RVM LEDS
6.7.3 CALL LED
Table 6-4 SITE LEDs
Green LED Yellow LED Definition
Off
On
Blinking
Off
Off
On
On
Blinking
Blinking
Off
Off
Off
On
Blinking
On
Blinking
On
Blinking
Site Disabled
Link Good
Link Open
Not Used
Link Noisy
Active Call
Chosen Active Call
Not Used
CDM Error
Table 6-5 RVM LEDs
Top
Yellow LED
Bottom
Yellow LED Definition
Off
On
Off
On
Off
Off
On
On
Not Used
RVM Only
cRVM Only
Not Used
Table 6-6 CALL LED
Green LED Definition
Off
On
No Active Call
Active Call