Comtec CDM-840 Installation And Operation Manual page 116

CDM-840 Remote Router
Ethernet-based Remote Product Management
•
Power Level (-40 to 0 dBm) – Enter the Tx power level in dBm.
• Carrier State – Use the drop-down list to select the Tx Carrier State as Off or On.
RTI Configuration
RTI means RECEIVE/TRANSMIT INHIBIT. When selected, it will prevent the Tx
carrier from being transmitted until the demodulator is locked. To avoid the Tx
Carrier from being turned off when the demodulator loses lock for a very short
period of time, the demodulator must be unlocked continuously for the selected
time period (1 to 5 seconds) before the transmit carrier is inhibited.
Set the desired Transmit Inhibit and Wait Time. Click [Submit] to save:
•
Transmit Inhibit – Use the drop-down list to:
o Disable;
o Enable – The Transmitter will be disabled with the Receive lock has been lost for "Wait
Time" number of seconds;
o Enable – Tx Carrier/Traffic Ethernet – The Transmitter and Traffic Ethernet will be
disabled with the Receive lock has been lost for "Wait Time" number of seconds.
• Wait Time – Enter a time, in seconds, to delay execution of the RTI function (when Enabled).
The range is from 1 to 5 seconds.
•
State (read-only) – The operational status of the RTI function is displayed here.
Modulator Frequency
This Modulator Frequency Calculator conveniently allows you to eliminate the guesswork
associated with the modulator's L-Band Frequency and the terminal's RF frequency. If the BUC
LO Mix and BUC LO Frequency and either of the desired frequencies are known, then the other
can be calculated. Use this calculator to start from either the Tx RF Frequency or Tx L-Band
Frequency and calculate the "other" frequency.
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MN-CDM840
Revision 3