Service manual

VOTER DIAGNOSTIC MODULE (VDM)
7-3
March 2000
Part No. 001-3139-502
7.2 VDM SETUP PROCEDURE
7.2.1 SWITCH SETTINGS
Refer to the VDM alignment points diagram for
the location of these switches (See Figure 7-4
).
7.2.2 JUMPER PLACEMENT
Refer to the VDM alignment points diagram for
the location of these switches (See Figure 7-4
).
Table 7-1 VDM SWITCH SETTINGS
Sw Sec
Description
S1 1
2
3
4
On = AFSK Data Receive Secondary Line Enabled
On = AFSK Data Receive Main Audio Input Enabled
On = Voice from main board Enabled
On = AFSK Data Receive from PCM Enabled
S2
Resets the microprocessor
S3 1
2
3
4
On = AFSK Secondary Transmit Data + Enabled
On = AFSK Secondary Transmit Data - Enabled
On = Digital Secondary Transmit Data gnd Enabled
On = Digital Secondary Transmit Data signal Enabled
S4 1
2
3
4
On = Digital Secondary Receive Data signal Enabled
On = Digital Secondary Receive Data ground Enabled
On = AFSK Secondary Receive Data + Enabled
On = AFSK Secondary Receive Data - Enabled
S5 1
2
3
4
Bit 0 - Alignment Test Switch
Bit 1
Bit 2
Bit 3
Table 7-2 VDM JUMPER PLACEMENT
JU Pin Description
J24 1 to 2
2 to 3*
Not Used
Normal operation
J27 1 to 2
2 to 3*
Not Used
No ALC
P33 1 to 2*
3 to 4*
5
6
No personality card attached
No personality card attached
open
open
J36 1 only*
1 to 2
2 to 3
Not used
-48V E-lead operation
-15V E-lead operation
7.2.3 VDM BACKPLANE EXTERNAL CONNEC-
TIONS
Refer to Section 7 for pinouts on the shelf back-
plane and wire harness pinouts.
7.3 ALIGNMENT
Alignment of the Voter Diagnostic Manual is not
required because of the RS-232 connection.
J14
J15
J21
J22
Jumper pin 1 to 2 for high impedance ground path
for split 600 ohm inputs and outputs. Leave open
if no ground path desired.
* Normal setting.
Table 7-3 BACKPLANE PINOUTS
Backplane
P34 to P49 Description
Wire Harness
P-Odd J1,3,5,7
pin 25
pin 26
pin 27
pin 28
pin 29
pin 30
pin 31
pin 32
Test Tx Data
Test Rx Data
Sec Rx +
Sec Rx -
EA lead
EB lead
Main RxA Tip +
Main RxA Ring -
pin 1
pin 2
pin 3
pin 4
pin 5
pin 6
pin 7
pin 8
RxS+
RxS-
EA
EB
RxA+
RxA-
pin 1
pin 2
pin 3
pin 4
pin 5
pin 6
P-Even J2,4,6,8
pin 57
pin 58
pin 59
pin 60
pin 61
pin 62
pin 63
pin 64
Alarm
Alarm
Sec Tx +
Sec Tx -
MA lead
MB lead
Main TxA +
Main TxA -
pin 1
pin 2
pin 3
pin 4
pin 5
pin 6
pin 7
pin 8
TxS+
TxS-
MA
MB
TxA+
TxA-
pin 1
pin 2
pin 3
pin 4
pin 5
pin 6
Table 7-2 VDM JUMPER PLACEMENT
JU Pin Description