3 Fiber Optic Converter Overview
3.7 CON/FOS/TTL
The fiber optic module CON/FOS/TTL converts a sin-
gle mode FO input signal into one or more electrical
output signals (TTL or RS-422).
CON/FOS/TTL
CON/FOS/TTL
FOS to TTL Converter
Standard Varianten
PPS, PPM, IRIG-B DCLS, 10 MHz
CON/FOS/TTL: FO In to 2 x TTL Out (BNC)
CON/FOS/422: FO In to 1 x RS-422 Out (DB9 fe-
male)
CON/FOS/TTL/422: FO In to 1 x RS-422 and 1 x TTL
3.7.1 Technical Specification CON/FOS/TTL
Input Signal:
one singlemode FO input via ST connector, edge-triggered
for E9/125
µ
m monomode fiber
minimum input level: 1
µ
W (-30dBm), wave length: 1310 nm
Electrical
Outputs:
2 x TTL
signal via BNC female connectors
2.5 V into 50 Ohm
or
1 x RS422
signal via DSub9 female connector
pin 5: GND, pin 7: +IN, pin 8: -IN
Signal Delay:
Delay of the electrical slope, detected with
CON/TTL/FOS and CON/FOS/TTL:
rising edge:
75 ns
falling edge:
70 ns
(plus the delay caused by the optical fiber: approx. 4,9 ns/m)
Data Rate:
max. 10 MHz
Signal-Jitter:
<1 ns
FO CONVERTER
Date: 14th January 2020
19
Summary of Contents for CON/232/FO
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