Expansion Module (87-8034-1, 87-8034-2); Irig Code Out; Alarm; Rates - Symmetricom XLi User Manual

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Expansion Module (87-8034-1, 87-8034-2)

The Expansion Module is a versatile option that expands the number of standard time code and pulse
1
rate outputs from the XLi. 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 selected XLi 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 (87-8034-2)
Connector Quantity and Type: Four female BNC
Mechanical:
• 1 slot
• 2 slots with Alarm relay option

IRIG Code Out

Format:
Amplitude (AM):
Ratio (AM):
Amplitude (DC):
Phasing:
Alarm
Active:
Amplitude:

Rates

Rate:
Duty cycle:
Amplitude (TTL):
168
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IRIG A, B; IEEE 1344 or NASA 36
(AM): 3.0 Vp-p +/-1V, into 50 Ω
3:1 +/- 10%
TTL into 50 Ω
In phase with carrier ± 10 μS
High
TTL Levels into 50 Ω
1 PPS, 1 kPPS, 10 kPPS, 100 kPPS, 1 MPPS, 5 MPPS, 10 MPPS
60/40% +/- 10%
TTL Levels into 50 Ω
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XLi Time & Frequency System
XLi-man, Issue 8, 6/17/2008, Rev. H
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