124
Options List
B.7
Four Fiber Optic Outputs
This option provides four individually selectable fiber optic outputs with Type ST connectors and 820 nm
transmitters compatible with multimode fiber.
B.7.1
Specifications
Each fiber optic output is jumper-configurable to each of the standard digital (CMOS) signal outputs available
in the clock. These include unmodulated IRIG-B, 1 Pulse Per Second and Programmable Pulse.
Analog signals, IRIG-B Modulated, and
±
5 V Recorder are not selectable.
Option provides an optical power output of -15 dBm minimum (-12 dBm typical) into 62.5/125
µ
m fiber.
The optical signal is ON whenever the selected logic signal is HI. Transmitter bandwidth is compatible
with all available logic signals.
Cover Removal
The clock cover must be removed to change jumper configuration. Turn off the instrument, and disconnect
the power cord. Using a T25 Torx driver, remove the eight screws holding the cover (and rack-mount ears,
if used) in place, and lift the cover off.
B.7.2
Output Jumper Enable (JMP2 – JMP5)
Select the output signal by setting jumpers JMP2, JMP3, JMP4, and JMP5 as described in Table B.2 and
illustrated in Figure B.4.
JMP1 enables (position A) or disables (position B) all of the outputs.
Output Transmitter
Jumper
Pin
Signal per Output
Notes
CR1
JMP2
1
IRIG-B
1, 2, 3
CR2
JMP3
2
IRIG-E
2, 3
CR3
JMP4
3
IRIG-H
2, 3
CR4
JMP5
4
10 MPPS
2, 3
–
–
5
5 MPPS
2, 3
–
–
6
1 MPPS
2, 3
–
–
7
100 kPPS
2, 3
–
–
8
10 kPPS
2, 3
–
–
9
1 kPPS
2, 3
–
–
10
100 PPS
2, 3
–
–
11
60 PPS
2
–
–
12
50 PPS
2
–
–
13
10 PPS
2, 3
–
–
14
1 PPM
2, 3
–
–
15
1 PPH
2, 3
–
–
16
1 PPS
1, 2, 3
–
–
17
Prog. Pulse
1, 2, 3
–
–
18
IRIG-B Mod. Manch.
2, 3
Table B.2: Four Fiber Optic Output Configuration
1. Signals available on the Model 1093A/B/C, Model 1200B, and Model 1201B/C
2. Signals available on the Model 1088A/B
3. Signals available on the Model 1084A/B/C
