Config:) Output Submenu; Mount Converters) - Comtech EF Data UT-4579 Installation And Operation Manual

UT-4579 X-Band Up Converters
Front Panel Operation
Next, use the  keys to set Rx (up converter operation) as On or Off. The
default mode is Off. Press ENTER.
6.2.3.1.1 (CONFIG:) OUTPUT Submenu (OPTIONAL DUAL IF RACK

MOUNT CONVERTERS)

Comtech EF Data provides the ability to switch the input IF frequency between
70 MHz and 140 MHz. For converters equipped with this optional hardware
configuration, the (CONFIG:) OUTPUT submenu appears as follows:
On the top line, press the ENTER key to set the converter RF Frq (Frequency).
You may edit the current frequency channel from RF
7900.000 to 8400.000 MHz) in 125 kHz steps (1 kHz steps optional). Use the  
keys to select a digit, and then use the  keys to change that digit.
Next, set the converter IF Frequency. Use the   keys to jump to this setting,
and then use the  keys to select 70 MHz or 140 MHz. The default is 70 MHz.
On the bottom linescreen that follows, set the converter Atten (Attenuation).
You may select an attenuation setting from 0.00 to 25.00 dB in 0.25 dB steps (0.1
dB steps optional). The default setting is 10.00 dB. Use the   keys to select a
digit, and then use the  keys to change that digit. Press ENTER.
1) The actual IF bandwidth is maintained as the standard ±18 MHz
(±20 MHz) of the 70 MHz configurations.
2) The mute behavior after changing the IF frequency is the same as
the normal mute behavior after changing the RF frequency.
3) You may not "mix" dual IF converters with standard converters
when operating in a redundant system.
Frq=07900.125 MHz
Atten=02.00 dB
6–9
IF=140
Rx = Off
to RF MHz (i.e.,
Low High
MN/UT4579.IOM
Revision 1