Performance Specifications - Symmetricom SSU-2000e User Manual

Table 6-4. Stratum 3E Clock Module Status LED Indicators (Continued)
Indicator
Selected Green
Warmup Amber
Acquire Green
Locked Green
Holdover Amber

Performance Specifications

Specifications for the Stratum 3E Clock module are provided in
Table 6-5. Stratum 3E Clock Module Performance Specifications
Performance Characteristic
Free Running Accuracy
Holdover Stability
0 to 24 hrs, @ +10 to +50°C
0 to 24 hrs, @ 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
Color
On = Module selected for providing outputs
Off = Module not selected
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
Within ±2.5 x 10
Within ±3.7 x 10
-9
±5 x 10
-8
±1 x 10
-4
±2 x 10
-13
<1 x 10
20 minutes
Includes effects of all SSU-2000e modules:
Exceeds requirements of ITU G.811, ANSI T1.101-1994,
T1.105.09, T1X1.3 (proposed new limits for wander
generation), and G.823
< 4 ns p-p (measured at the CLKA/BIN 8 kHz output)
Chapter 6 Clock Module Reference Data
Description
Table
Specification
-7
, the first year (vendor spec)
-6
after 20 years (vendor spec)
SSU-2000e User's Guide 149
Stratum 3E Clock Module
6-5.