Comtech EF Data CDM-Qx, Installation And Operation Manual

Page: 108 / 224

CDM-Qx Satellite Modem Revision 6
Front Panel Operation MN/CDMQx.IOM
5.7.6.3 (Utility
%
Ref) - REFERENCE ADJUST
Internal Freq Ref: Adjust
Warm-up delay ( ▲▼ , ENT)
Fine adjustment of the Internal 10 MHz reference oscillator is possible through this
menu. The range of values is from –2048 to +2047. Use the
#$
arrow keys to edit the
value, then press
ENTER
.
Note :
The numbers displayed here do not correspond to an exact frequency increment. A
user should perform this fine adjustment while using an external frequency counter
connected to either:
a) the internal 10 MHz reference, or
b) the Tx Output set for CW, and an exact center frequency of, for example, 1000 MHz.
5.7.6.4 (Utility
%
ID) – CIRCUIT IDENTIFICATION
Edit Circuit ID: ( ◄ ► , ▲ ▼ , ENT)
28 CHARACTER TST MESSAGE
Edit the Circuit ID string, using the ! " and #$ arrow keys. Only the bottom line is
available (28 characters). The cursor selects the position on the bottom line (
◄ ► )
and
the character is then edited (
#$
). The following characters are available:
Space ( ) * + - , . / 0-9 and A-Z.
When the user has composed the string, press
ENTER
. Backup devices in redundant
groups do not have an ID. If plug-in devices are to be grouped, the grouping should
precede assigning IDs so the group can be named instead of the individual devices.
5.7.6.5 (Utility
%
Display) - DISPLAY BRIGHTNESS
Edit Display Brightness:
100% ( ▲▼ , ENT)
Edit the display brightness, using the #$ arrow keys, then pressing
ENTER
.
5–60