Operation and Maintenance Manual

CANAM TECHNOLOGY, INC. (CTI)
MARK-IV VHF BROADBAND SIGNAL BOOSTER M4BBDAV O&M MANUAL
Page 36 of 39
Rev0 April/2015
Start Level (dBm)
The “Start Level” is a read-only value; it is
automatically set by the system in order to
comply with expected Gain and Set Point
Level.
It is the input Automatic Level Control limiter
threshold. If the Input RF Composite Power is
greater than iALC Start Level, it will be
attenuated to avoid system saturation.
Turn-off iALC stage
Turn-off iALC stage output power causing the
output power being down.
F.2.2.2 MCPA Control:
For the “Output MCPA Mute” and “Reset Reflected Power Alarm Reset”
commands, the user can set the preferred control method by choosing
Software or Hardware in the “Control by” field.
a. If the user chooses hardware control, the controller will respond to the
opto-isolated inputs located in the ECM I/O DB25 Connector and the
software commands for these two parameters will have no effect.
The Reset Reflected Power Alarm command mapped to ECM I/O DB25
Connector can be controlled through pins 7 and 8 for both Service Side
(DL Tx) and Donor Base (UL Tx) outputs.
The Power Amplifier Mute command mapped to ECM I/O DB25
Connector can be controlled through pins 5 and 6 for both Service Side
(DL Tx) and Donor Base (UL Tx) outputs.
When “Control by Hardware” is selected the UL and DL MCPAs are
automatically un-muted unless the corresponding opto-isolated input is
energized.
Output MCPA Mute
Mute/un-mute MCPA
Reset Reflected Power Alarm
Clear the Reflected Power Alarm Latch.