Tektronix CTS 850, User Manual

Page: 114 / 178

Basic Test Procedures
3–8
CTS850 SDH/PDH Test Set User Manual
2. Set up the CTS850 as follows:
Press Menu
Button Select Menu
Page Highlight
Parameter
Select Choice
TEST SETUPS RECALL
INSTRUMENT
SETUPS DEFAULT
FACTORY
SETTINGS Recall Setup
TRANSMIT TRANSMIT
SETTINGS Transmit Rate 2 Mb/s or any
PDH rate
RECEIVE RECEIVE
SETTINGS Receive Rate STM-1
Structure TU–12 Async or
applicable TU–x
TU Under Test Set to match how
the NE is
provisioned
Payload 2 Mb/s Unframed
or any PDH rate
TEST SETUPS TEST CONTROL Test Duration 15 Minutes
RESULTS SDH RESULTS none Defects
3. Press the START/STOP button.
While the test is running, the CTS850 counts errors and errored
seconds and then calculates the error ratio for each error type.
After 15 minutes have elapsed, the test stops automatically and the
measured results are held on the SDH RESULTS page until another
test is started.