User manual

Table Of Contents
3-10 Section 3: Installation
Moseley SL9003Q 602-12016 Revision G
9. With the POST-BER in the display, press ENTER. This will reset the bit counter
(# BITS) to zero. There should be no errors (# ERRORS = zero) under this
signal condition.
10. Verify BER threshold performance of the system as follows: Increase the variable
attenuation until the QAM MODEM STATUS (BER POST) screen displays a
BER POST reading of approximately 1.00E-06. This will take some time in
order to accumulate enough bits for an accurate measurement.
11. The RSL reading should be approximately:
2 channel:
–89 dBm (+/- 2 dBm)
4 channel:
–89 dBm (+/- 2 dBm)
Composite:
–89 dBm (+/- 2 dBm)
12. Set the variable attenuator for a reading of -60 dBm on the display.