Sencore ASM 988A - Input Source; Inv PN-23; M2 P Source Clock

ASM 988A – Manual
7
-IF Output Muted
-Delete Sync Byte
-System Parameters
-Fault Settings
-View Faults
-Reset System
-SNMP Settings
INPUT SOURCE
The input menu allows the input to the modulator to be switched between one of seven
(7) possible modes, PN-23 Normal, Inv PN-23, M2P Sink Clock, M2P source clock,
DVB-SPI and DVB-ASI, ASI Sink Clock.
Note: In PN-23 and Inv PN-23 mode the inputs to the modulator are ignored as the unit
produces an internal PN code.
Note: In DVB-ASI mode, the user has to adjust the payload data rate just above the
average incoming payload rate to account for the asynchronicity in the ASI input. We
recommend to set the payload data rate at 0.1% above the average incoming bitstream
rate. If the data rate is too low the modulator will insert null packets and recalculate PCR
to compensate for the rate change.
To change the input source, press ENTER to edit, use the Up/Down arrow keys to select
and ENTER to save.
PN-23
This is a test mode designed to work in conjunction with the receiver to calculate true
BER.
Inv PN-23
This is a test mode designed to work in conjunction with the receiver to calculate true
BER.
M2P source clock