Maintenance Manual

CANAM TECHNOLOGY, INC. (CTI)
MARK-IV VHF NARROWBAND SIGNAL BOOSTER
OPERATIONS & MAINTENANCE (O&M) MANUAL
Page 32 of 37
Rev0 May/2011
Maximum Desired Output Level per filter(dBm):
Allows the configuration of the output level such as the maximum gain per
path will be less than or equal to 120dB.
The specified value cannot be modified in case the maximum gain would be
greater or equal than 120dB.
The Maximum Desired Output Level is the user setting or goal set point for the
RF Output power level per filter window, subject to the following two
constraints:
1. Maximum Gain of 120dB:
The maximum gain for any filter window may not exceed 120dB. Due
to the Automatic Gain Control (AGC) function, the system calculates
the Gain starting at the minimum signal level able to be received,
which is defined by the Rx Threshold (Squelch) setting. Signals coming
in at that threshold level will be amplified a maximum of 120 dB.
Therefore:
o Actual Maximum Desired Output (Set-point) <= Lowest Rx
Threshold + 120dB.
THUS: The User entered Set-point may be automatically reduced
to meet the maximum 120dB Gain. For example, this will happen
if the User reduces an Rx Threshold setting. below the lowest
previously defined.
o The Desired Output (Set-point) values are limited by this
constraint.
o NOTE: This equation is driven by the lowest Rx Threshold value in
the filters bank, i.e. if at least one filter is set lower than the rest,
that value drives the output Set-Point for the entire bank.
Press the “Apply” button to apply changes to the current state. The current
state applied to system is saved to the controller’s internal nonvolatile
memory for effective recovery after a power loss or system reset.
Pilot Test Carrier: