A.4 Antenna System 97
A.3.3 Relay Contacts
• 2 sets, form-C (SPDT) fail safe, 0.3 A at 130 Vdc; one is set to Locked function; and the
second one may be configured to Fault, 1 PPH, or Programmable Pulse – jumper-selectable.
A.3.4 Programmable Pulse Output
• Five Modes: (1) Seconds-per-pulse; repetitive pulse, every 1 − 60,000 seconds; (2) Pulse-per-
hour: every 0 − 3599 seconds after the hour, (3) starting at the top of the hour; (4) Set Alarm
Time Mark: daily at a specified time of day; or one-shot at a specified time of year, (5) Slow
Code − UTC, LCL ( + or −). Pulse duration programmable 0.01 − 600 seconds, except in
one-shot mode, where the output is Low prior to the specified time and High thereafter.
A.3.5 Event A Input – Alternate Function
• Input provides one input as an alternate function, with a simple hardware modification to
the 1-PPS configurable output. The input may be configured to accept an external 1-PPS
signal, and measure the deviation from the 1-PPS/GPS signal with 100-ns resolution.
• Input also allows configuration of 1-PPS input to accept an external signal to record up to
500 sequential events with 100-ns resolution, provided that the events are separated by 11
ms. Event data is stored in battery-backed RAM.
A.4 Antenna System
The included antenna is directly mounted on a 26-mm pole (1.05-in. OD or 3/4-in. ID pipe), with
either a standard 1-in. – 14 (approximately M25.4 x 1.81) marine-mount thread or a 3/4-in. NPT
pipe thread. Other mounting configurations are available (contact Arbiter Systems).
• GPS Antenna Assembly, 3/4-in. Pipe Thread Mount, 35 dB gain; Operates on 5 Vdc.
• Optional Antenna Mounting Bracket available to mount on 60-mm (2-in. nominal) pipe (p/n
AS0044600, see Figure 4.2).
• Magnet mount, lip mount, or post mount (30-mm max. diameter) available
A.4.1 Antenna Cable
• 15-meter (50-foot) cable included with antenna.
• Other cable styles and lengths available see Table 4.2.
A.5 Operator Interface
A.5.1 Setup Methods
• Via RS-232C Interface
• 8 Front-panel keys (Models 1084B/C Only)
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