Configuration Commands / Queries; Fre (Frequency); Iff (If Frequency) - Comtech EF Data DT-4572 Installation And Operation Manual

DT-4572 X-Band Down Converter
Serial Interface Operation
8.7.3

Configuration Commands / Queries

8.7.3.1

FRE (Frequency)

Use FRE to set or return the operating frequency. The default RF frequency of
the unit is equal to its minimum operating frequency (RF
Description
Set Frequency:
Confirmation:
Return Frequency:
Confirmation:
8.7.3.2

IFF (IF Frequency)

For units featuring the DUAL IF hardware option: Use IFF to switch the output IF
frequency from 70 MHz to 140 MHz, or from 140 MHz to 70 MHz.
Description
Set IF Frequency:
Confirmation:
Return Frequency:
Confirmation:
1) This is an optional hardware configuration.
2) The default selection is 70 MHz.
3) The actual IF bandwidth is maintained as the standard ±18 MHz
(±20 MHz) of the 70 MHz configurations.
4) The mute behavior after changing the IF frequency is the same as
the normal mute behavior after changing the RF frequency.
5) You may not "mix" dual IF converters with standard converters
when operating in a redundant system.
Details
<DEV/FRE_xxxxx.xxx{cr} where:
xxxx.xxx = Frequency from 7900 to 8400 MHz (RF
steps (1 kHz steps optional)
>DEV/FRE_xxxxx.xxx{cr}{lf}]
<DEV/FRE_{cr}
>DEV/FRE_xxxxx.xxx{cr}{lf}]
Details
<DEV/IFF_xxx{cr} where:
xxx = Frequency in MHz, either 140 or 70. No leading zero is required.
>DEV/IFF_xxx{cr}{lf}]
<DEV/IFF_{cr}
>DEV/IFF_xxx{cr}{lf}] where xxx = Frequency in MHz, either 140 or 70.
8–20
MN/DT4572.IOM
Revision 1
).
LOW
to RF ), in 125 kHz
LOW HIGH