6: Option Cards
Expansion Module (87-8134-1, 87-8134-2)
The Expansion Module is a versatile option that expands the number of standard time code
and pulse rate outputs from the XL-GPS. Four independent, user configurable outputs are
provided. The output signals are selectable via an on-module rotary switch. Specify output
signals configuration at time of order. A version of the module is also available supporting an
alarm relay output.
The available output types are as follows:
• Time Code AM/DC: Format mirrors XL-GPS standard code output (IRIG A,B; IEEE
1344 or NASA 36)
• Alarm
• Rates (1 PPS, 1 KPPS, 10 KPPS, 100 KPPS, 1 MPPS, 5 MPPS, 10 MPPS)
• Programmable Pulse (Requires PPO option to be installed)
• Alarm Relay (87-8134-2)
Specifications:
• Expansion Module 87-8134-1
• Expansion Module w/ Alarm Relay 87-8134-2
Mechanical:
Connector Quantity and Type: Four female BNC
Options Slots:
• 1 slot (87-8134-1)
• 2 slots (87-8134-2) with Alarm relay option
Time Code:
Format: IRIG A, B; IEEE 1344 or NASA 36
Amplitude (AM): 3.0 Vp-p +/-1V, into 50Ω
Ratio (AM): 3:1 +/- 10%
Amplitude (DC):
TTL into 50 W
Phasing:
In phase with carrier ± 10 mS
Accuracy to clock
1PPS, derived from processor clock
Page 152 of 221 .................................098-00116-000 Rev. A
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