20
Setting Internal Jumpers
I/O PORT 1
I/O PORT 2
I/O PORT 3
FIBER
RS-485
RELAY
Drive Type
JMP7
JMP12
JMP9
CMOS
A*
A*
A*
OPEN DRAIN
B
B
EVENT IN
C
C
C
Signal Select
JMP6
JMP12
JMP13
JMP8
JMP14
JMP2
JMP10
IRIG-B
B*
Modulated
IRIG-B
C*
C
C
C*
B
Unmodulated
1 PPS
A
A
A*
A
Programmable
B
B
B
B
B
Pulse
Data Out
A*
Status
A*
* Default Setting
Table 5.1: Main Board Output Signal Selection
5.2.1
Digital Outputs: Port 1, Port 2 and Port 3
PORT 1, Port 2, and PORT 3 provide identical digital signal choices. Available digital signals are
unmodulated IRIG-B, programmable pulse and pulse per second (1 PPS). These two ports may
also be jumpered to a 200 volt FET for pull down applications. Additionally, either port may be
used as an event input. Configuration requires two jumpers. One jumper sets the type of signal
and ther other sets the signal source. See table 5.1 for a complete list.
5.2.2
IRIG-B Unmodulated, 5 V Outputs
A 5 V
T T L
unmodulated IRIG-B signal is available with the following jumper configuration.
Port Number
Required Jumper Positions
1
JMP6 = C and JMP7 = A
2
JMP13 = C and JMP12 = A
3
JMP8 = C and JMP9 = A
Table 5.2: Unmodulated IRIG-B Jumper Table
5.2.3
1 PPS, 5 V Output
A 5 V
T T L
pulse per second signal is available with the following jumper configuration.
Port Number
Required Jumper Positions
1
JMP6 = A and JMP7 = A
2
JMP13 = A and JMP12 = A
3
JMP8 = A and JMP9 = A
Table 5.3: 1 PPS Jumper Table
