Functional Specifications - Symmetricom SSU-2000e User Manual

Table 6-1. Stratum 2E Clock Module Status LED Indicators (Continued)
Indicator Color
Warmup Amber
Acquire Green
Locked Green
Holdover Amber

Functional Specifications

Table 6-2 lists the specifications for the Stratum 2E Clock module.
Table 6-2. Stratum 2E Clock Module Specifications
Performance Characteristic
Free Running Accuracy
Holdover Stability (Rubidium LO)
0 to 24 hrs, @ +10 to +50°C
0 to 24 hrs, @ 0 to +50°C
30 days @ +10 to +40°C
30 days @ 0 to +50°C
Numeric Controlled Oscillator
(NCO) PLL lock range
Tuning Resolution (Locked Mode)
Warm-up Time (Warm-up Mode)
Wander Output (Holdover)
Jitter (Locked or Holdover)
12713140-002-2 Revision E – October 2006
On = Clock module is in warm-up mode
Off = Clock module has completed warmup
On = Clock module is acquiring a lock on a signal
Off = Not acquiring a lock on a signal
On = Clock module is locked on a signal
Off = Clock module is not locked on a signal
On = Clock module is in holdover mode of operation, downloading
firmware from the communication module (cannot be selected
during this period)
Off = Clock module is not in holdover
-10
Within ±5 x 10E
-9
Within ±5 x 10E after 10 years
-11
±9 x 10E
-10
±1 x 10E
-10
±1.5 x 10E
-10
±1.7 x 10E
-4
±2 x 10E
-13
<1 x 10E
20 minutes
Includes effects of all SSU-2000e modules:
Compliant with clock levels per ITU-T G.812, T1.101-1999,
and Telcordia Technologies GR-378-CORE and
GR-1244-CORE. Meets SONET requirements per T1.105.
Meets or exceeds performance requirements for ITU-T G.812
Type II and ETSI Transit Node clocks and T1.101 and
Telcordia Technologies (Bellcore) Stratum 2 clocks.
< 4 ns p-p (measured at the CLKA/BIN 8 kHz output)
Chapter 6 Clock Module Reference Data
Stratum 2E Clock Module
Description
Specification
the first year
SSU-2000e User's Guide 145