Comtech EF Data CDM-700 - Manual (Page 73)

CDM-700 High Speed Satellite Modem Revision 5
Front Panel Operation MN/CDM700.IOM
6–19
Rx:
Æ Code
Code Rate: 3/4 7/8
( E)
IMPORTANT
• All possible choices are presented at all times.
• If an option is not installed (either Hardware or FAST) or is not valid, or if a
code rate is not available for the Mode selected, the ◄ ► arrow keys will
force the cursor to skip past the unavailable choice.
Select the code rate by using the ◄ ► arrow keys. Press
ENTER
.
Rx Code Rate Selection Description
3/4 Valid for all Modulation Types
7/8 Valid for all Modulation Types (actual 20/23)
Rx:
Æ Freq
Rx IF Freq: 0140.0000 MHz
(E)
Edit the Rx IF Frequency by selecting the digit to be edited, using the ◄ ► arrow keys. The value
of the digit is then changed using the ▲ ▼ arrow keys. Press
ENTER .
70/140 MHz
The ranges of frequencies are from 52 to 88 MHz and from 104 to 176
MHz with a resolution of 100 Hz.
L-Band
The range of frequency is from 950 to 1950 MHz with 100 Hz resolution.
Rx:
Æ Data
Rx Comp Data Rate(Mbps)
000.000000
(E)
This is a ‘read only’ status window that displays the Composite Data Rate, the sum of data rates
for all enabled Tx ports on Intfc1 and Intfc2 as measured at the data input connector (customer
interface). Referring to the next menu, the Symbol Rate is the rate transmitted at the Tx IF
connector and corresponds to the Composite Data Rate plus overhead (2.5%), and includes the
effects of coding and modulation.