Installation & Systems Manual RUBIDIUM SERIES
Page 71
3.36 SI: IRIG Monitoring and Changeover Unit
This module can frame accurate and in real-time compare and contrast two incoming IRIG
time code signals for indescribable differences. In the event of a failure, “SI” automatically
switches to the other faultless source. The SI module is a must for all time code systems where
failure proof IRIG is a requirement. This includes real-time applications. Additionally, it
monitors IRIG and reference errors, IRIG/ IRIG and IRIG /reference differences, and it makes
status information about all sources available.
1
IRIG OUT
IRIG IN 2
Alperm ann+V elte
GPI OUT
REF IN
REF OUT
REF OUT
IRIG IN 1
IRIG OUT
IRIG IN (2 x RJ45):
IRIG IN Format: IRIG-B123 according to IRIG STANDARD 200-98,
amplitude modulated carrier signal with 1 kHz carrier
frequency, balanced signals
Signal level: 100 mV
p-p
- 5 V
p-p
, auto-ranging
Input impedance: 18 k
SERIAL IN Serial time & date data string
TELEGRAM IN Impulse telegram
IRIG OUT (RJ45 and DSUB9F):
IRIG OUT Balanced IRIG output, switched via relay to one input
SERIAL OUT Serial time & date data string, switched via relay to one input
TELEGRAM OUT Impulse telegram, switched via relay to one input
REF IN (RJ45):
PPS IN Pulse per second, input
RXD IN Reference time & date input, serial data string
REF OUT (2 x RJ45):
PPS OUT Pulse per second output, hard-wired with signal at REF IN
TXD OUT Reference time & date output, hard-wired with signal at REF IN
GPI OUT (RJ45):
FAIL Failure signals
WARNING Warning signals
Others:
Operating voltage 12 - 30 V DC
Power consumption 1.5 W maximum
Weight 0.3 kg approx.
Mechanical Standard circuit board (W x D): 100 x 160 mm / 3.94 x 6.30 inch
Rear panel: RUB H1: 103 x 44 mm / 4.06 x 1.73 inch
RUB H3: 8HP, 3RU
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