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CDM-600L Field Installation Instructions
KT/11202-1 External 20 dB Step Attenuator Kit
CA/WR11178-1 mates with the 4-pin connector J7 on the modem top board PL/9662-1. This jumper plug
loops a 5V control signal to the output connector center conductor via the path normally used for BUC
power supply output. The attenuator module PL/11141-1 has a male type N connector on one end, and a
female type N connector on the other. The male connector mates with the transmit IF output connector J2
leaving the female connector for transmit cable connection.
Front panel operation
The new features are shown in bold, so that the changes are easy to see.
CONFIG: TX: POWER
The Tx power mode menu may appear as:
TX PWR MODE=MANUAL
or, if the programmable external attenator is detected:
TX PWR MODE=MANUAL-LOW (MAN,AUPC (LOW))
Select the parameter to edit using the [←] [→] arrow keys.
Edit the Tx power mode using the [↑] [↓] arrow keys. The selection may include:
MANUAL
MANUAL-LOW
AUPC
AUPC-LOW
LEVEL= –15.0 dBm
LEVEL= –35.0 dBm
This is the normal power mode, with a calibrated Tx power level range of –40 to
0dBm. Level values of –45 to 0 dBm are permitted, * indicating when a level is
beyond the specification. The External attenuator will be switched off, if present.
This is a manual power mode with the programmable external attuator activated.
The calibrated Tx power level range is –60 to –20 dBm. Level values of –65 to -
60 dBm are permitted, * indicating when a level is beyond the specification.
Available only if EDMAC or D&I++ is enabled. The External attenuator will be
switched off, if present.
This is the AUPC mode, available only if EDMAC or D&I++ is enabled, with
the external attenuator activated.
(MANUAL,AUPC)
(-45 to 0)
(-65 to –20)
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