12713020-002-2 Revision D – April 2004 SSU-2000 User’s Guide 135
Clock Module Reference Data
Type 1 Clock Module
Functional Specifications
Table 6-6 lists the specifications for the Type 1 Clock module.
Acquire Green On = Clock module is acquiring a lock on a signal
Off = Not acquiring a lock on a signal
Locked Green On = Clock module is locked on a signal
Off = Clock module is not locked on a signal
Holdover Amber On = Clock module is in Holdover mode of operation
Off = Clock module is not in Holdover mode
Table 6-6. Type 1 Clock Module Specifications
Performance Characteristic Specification
Holdover Stability
0 to 24 hrs @ –5 to +45C
±2 x 10
-9
(after 30 days operation)
Numeric Controlled Oscillator
(NCO) PLL lock range
±5 x 10
-4
Tuning Resolution (Locked Mode)
<1 x 10
-13
Warm-up Time (Warm-up Mode) 20 minutes
Wander Output (Holdover) Includes effects of all SSU-2000 modules: Compliant with
clock levels per ITU-T G.812, Type 1 and ETSI EN300 462-4
Jitter (Locked or Holdover) < 4 ns p-p (measured at the CLKA/BIN 8 kHz output)
Table 6-5. Type 1 Clock Module Status LED Indicators (Continued)
Indicator Color Description
To Next Page
Loading...
Need help?
General
