Comtech EF Data CDM-570 Installation And Operation Manual page 473

CDM-570/570L Satellite Modem with Optional IP Module
Appendix K
(ODU SELECT) ODU CONFIG: MISC
LNA Current Window:
99 %
To define the allowable LNA current change before declaring a fault, edit the LNA
Current Window setting as follows:
• Use the ▲ ▼ arrow keys to select a value – the value scrolls from 20% to 50%.
• Select 99% to disable the LNA Current Window function.
• Press ENTER when done.
(ODU SELECT) ODU CONFIG: MISC
Calibrate LNA Current?
Cal
To calibrate the LNA current for use with the LNA Current-Window function
(described previously). Use the ◄ ► arrow keys to select Cal or Exit, and then press
ENTER.
(ODU SELECT) ODU CONFIG: MISC
LNA: State
Cal Fault-Logic (◄ ►,ENT)
Use the ◄ ► arrow keys to select State, Curr-Window, Cal, or Fault-Logic, and
then press ENTER.
(ODU SELECT) ODU CONFIG: MISC
ExternalRef Fault Logic:
Summary No-Summary
Use the ◄ ► arrow keys to select Summary or No-Summary, and then press ENTER.
(ODU SELECT) ODU CONFIG: MISC
Internal Ref Adjustment:
087
To edit the Internal 10MHz Reference setting: Use the ▲ ▼ arrow keys to select a value
– the value will scroll from 000 to 255 – and then press ENTER.
(▲ ▼,ENT)
Exit (◄ ►,ENT)
Curr-Window
(◄ ►)
The CSAT will automatically lock to an external 5 or 10 MHz reference
independent of the state of this selection. This selection determines
whether or not the Summary Fault Relay is activated if the CSAT loses
lock with the external reference.
(▲ ▼,ENT)
The Internal Reference is adjusted in the factory to be very accurate
with the default setting of 087. This parameter is made available to
compensate for the long-term frequency drift of the oscillator
LNA
LNA
LNA
XRef (External Reference)
Ref-Adjust
K–11
Revision 12
MN/CDM570L.IOM
Curr-Window
Cal (Calibrate)
Fault-Logic
.