Symmetricom TimeHub 5500 Reference Guide

097-55501-02 Issue 7 – January, 2005 TimeHub 5500 TL1 Reference Guide 159
Performance Monitoring
Measurements
Response Format:
<sid> <date> <time>
M <ctag> COMPLD
"CLK a-b:TDEV-a,<monval>,<status>"...
;
The parameters displayed in the response are listed below.
Table 4-5 lists TDEV measurements and the measurement time period for an input
port.
Parameter Value Description
CLK a-b a = 1 or 2 Clock card from which data was collected
b = 1 to 4 Input port number of Clock card from which data
was collected
TDEV-a a = 1S, 4S, 16S, 64S,
256S, 1024S
Performance monitoring measurement type,
where a is the averaging time (refer to Table 4-5
for details). Variable a can also be appended to
TDEV in RTRV-PM to obtain a response for only
that measurement time
<monval> Calculated values for averaging times in nanoseconds
Parameter Value Description
<status> COMPL Averaging time calculation was completed
NA,NA Averaging time calculation is not yet available
Table 4-5 TDEV Measurements and Time Periods for Single Input Port
Measurement
Averaging Time
First Data
Available After
Updated Every
Includes Data
from Last
TDEV-1S 98 s 96 s 98 s
TDEV-4S 392 s 192 s 392 s
TDEV-16S 1568 s 384 s 1568 s
TDEV-64S 6272 s 768 s 6272 s

Symmetricom TimeHub 5500 Specifications

General

Brand	Symmetricom
Model	TimeHub 5500
Category	Data Loggers
Language	English