Ormazabal ekor.rps - IRIG-B Input

IG-150-EN version 04; 03/10/16
42
Hardware General instructions
ekor.rps
2.8.4. IRIG-B input
Demodulated input, TTL level
Type of cable: 2 shielded twisted wires
Isolation: 500V
Connections:
1
IRIG-B generator
2
Screen
3
Twisted and shielded pair
4
ekor.rps unit
Figure 2.14. IRIG-B input
The input circuit is a 390 Ω serial resistance with an
optoacoplator; for a 5 V signal, the approximate consumption
is 10 mA.
The number of units that can be connected in parallel to
a generator depends on its capacity of supplying output
current; a typical value could be 70 mA, so 6 units could be
connected, (although the length and the type of wire can
also inuence). The wire must be shielded and twisted.