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3.3 Relay Contact Outputs
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3.3
Relay Contact Outputs
Do not exceed the maximum contact output ratings. For mechanical relays (standard), 250 Vac/125
Vdc, 8 A, 2 kVA/150 W max.
For solid state relays (optional, KYZ) 350 Vac/Vdc, 0.12 A
continuous, 0.36 A peak (100 ms).
Figure 3.9: Relay Contact Connector
Use extreme caution when working with high voltages. Each set of contact outputs is marked
with a normally closed and normally open symbol as shown on the right, where “normally” refers
to the 1133A powered OFF. Use care to select the appropriate side of these contacts for correct
indication. Attach contact output wires to the supplied 3-pin, female connector-plugs using the
compression screws. One, 3-pin female connector block is used for each set of contacts. Insert
the connector-plug into the male connector on the 1133A. The contact output connectors lock in
position, but do not have safety-locking screws to anchor the connector.
3.4
Event Inputs
Do not exceed the maximum Event Input ratings of 24-240 Vdc max.
Event Inputs may be
configured for 5 V logic level, and require a bias resistor change on the main board. See Chapter 14
for details on configuring the input voltages to 5 Vdc. Use extreme caution when working with
high voltages.
Figure 3.10: Event Input Connector
Attach event-input wires to the supplied 2-pin, female connector-plugs using the compression
screws according to the configuration diagram. Observe polarity markings. One, 2-pin female
connector block is used for each event input. Insert the connector-plug into the male connector on
the 1133A. The Event-Input connectors lock in position, but do not have safety locking screws to
anchor the connector.
3.5
IRIG-B Output
IRIG-B outputs are 5-V, CMOS-level voltages used to synchronize any equipment that requires
IRIG-B specific data format. The IRIG-B output is marked with polarity markings for correct
connection. Attach IRIG-B output wires to the supplied 2-pin, female connector-plug according to
the polarity markings shown in Figure 3.11. Use a BNC breakout to convert to coax.
For additional details on connecting and distributing IRIG-B, please see the material on IRIG-B
located in the Appendix C of this manual, and documents on the Arbiter web site[3].
1
Pomona Electronics, wwwpomonaelectronics.com, (800) 444-6785, (425) 446-6010, part no. 4969 and 4970.