126
Options List
B.8
8-Channel High Drive IRIG-B Amplifier
B.8.1
General Description
This option provides eight independent, IRIG-B buffered outputs, each capable of driving multiple loads.
Outputs are short circuit and surge protected. Each output is individually configurable for either modulated
or unmodulated IRIG-B signals via jumper settings as illustrated in Figure B.5.
B.8.2
Specifications
Output Selection
Number of Channels:
Eight (8).
Signal Levels:
Modulated:
4.5 Vpp with 20 Ω source impedance; each channel
will drive a 50 Ω load to 3 Vpp minimum.
Unmodulated:
+5 V open-circuit; +4 V minimum at 250 mA
load current each channel will drive 25 Schweitzer
SEL-3xx (in parallel) or 50 SEL-2xx (in series/parallel)
relays at 10 mA per relay.
Maximum Load (per driver):
Modulated:
No Limit: will drive a short circuit.
Unmodulated:
250 mA peak current; pulse-by-pulse shutdown if load
current exceeds internal limit (self-resetting).
Output Connector
16-position pluggable 5 mm (Phoenix-type) terminal strip with eight 2-position mating connectors.
B.8.3
Option Setup
Using the“ X Utility Software
To set up 8 High Drive Outputs using the utility software, please go to Section 7.15.
Using Front Panel Keys
To set up 8 High Drive Outputs from the front-panel keys, please follow the guidelines in Section 8.11.
Using RS-232C Port
To set up 8 High Drive Outputs using the RS-232C port, please follow the guidelines in Section 11.2.13.