Name: Arbiter Systems 1084A
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7.4 Connecting Outputs 55

7.3.5 Programmable Pulse (PROG PULSE)

Models 1084A/B/C series clocks have an independent programmable pulse feature that requires

some jumper and ﬁrmware conﬁguration. Models 1084B/C may be conﬁgured from the front panel

and 1084A must be conﬁgured through the RS-232 port. Programmable pulse modes include setting

the pulse width and time zone. To conﬁgure, please see Sections 5.2 and 6.7.

Prog Pulse Mode Conﬁgured Feature

Seconds Per Pulse X number of seconds between pulses, 0 – 60,000

Pulse Per Hour Number of seconds after each hour, 0 – 3599

Pulse Per Day Hour, Minute, Second, Fractional Seconds

Single Trigger Day, Hour, Minute, Second, Fractional Seconds

Slow Code ON or OFF

Pulse Polarity positive or negative–going pulse

Table 7.3: Programmable Pulse Types

7.4 Connecting Outputs

All clocks come equipped with BNC female connectors, however if you are using twisted pair cabling,

you can use a BNC breakout. See the reference below

, or other similar adapter.

NOTE: If using a shielded, twisted-pair cable (like Belden 8760), DO NOT connect the cable shield

at the clock. Always connect a cable shield at the receiving equipment (IED) grounding point.

7.4.1 Attaching Cables to Screw Terminals

Some of the option boards mounted in the Model 1084A/B/C series clocks have screw terminals

instead of BNC connectors to connect wiring. To mount wiring to screw terminals, prepare the

twisted pair cable by stripping back at least 1/4” of the insulation and any shielding; DO NOT

tin the bare wire. Tighten the screws down on the wire. Do not ground the shield to the Arbiter

clock, rather ground it at the receiving end.

7.4.2 How Far Can I Run IRIG-B Cabling?

Before laying cable to transmit IRIG-B over long distances, take time to consider the following

factors: (1) resistive losses in cabling, (2) electromagnetic interference, (3) propagation delays and

(4) installation and maintenance costs.

For details on distributing IRIG-B signals over long distances, see application note, AN101, Dis-

tributing Timing Signals in a High-EMI Environment. Download ﬁle appnote101.pdf at the follow-

ing link below.

Pomona Electrics, www.pomonaelectronics.com, (800) 444-6785, (425) 446-6010, part no. 4969 and 4970

Brand

Model

1084A

Arbiter Systems 1084A User Manual

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