Comtech EF Data DT-4500-A Series - Manual (Page 125)

DT-4500-A Series Downconverters Revision 1
Appendix A MN-DT4500A
A–15
A.7.2 Configuration Commands
A.7.2.1 Frequency
The default RF frequency of the unit is equal to its minimum operating frequency (RF
Low
).
Command Details
Set Frequency: <DEV/FRE_xxxxx.xxx'cr'
Confirmation: >DEV/FRE_xxxxx.xxx'cr''lf']
Retrieve Frequency: <DEV/FRE_'cr'
Confirmation: >DEV/FRE_xxxxx.xxx'cr''lf']
Note: For example, xxxx.xxx = 14000.000 to 14500.000 MHZ in 125 KHz steps for Model
UT - 4514-A
A.7.2.2 Attenuator
The default attenuation value is 10.00 dB.
Command Details
Set Attenuator: <DEV/ATT_ yy.yy'cr'
Confirmation: >DEV/ATT_yy.yy'cr'lf']
Retrieve Attenuator: <DEV/ATT_'cr'
Confirmation: >DEV/ATT_ yy.yy'cr''lf']
Note: yy.yy = 00.00 to 25.00 dB in 0.25 dB steps.
A.7.2.3 Cold Start
The cold start function, if enabled, mutes the output signal for a predetermined time following
Power-Up to ensure a stable reference oscillator (15 minutes). The default is OFF. This command
is disabled in redundant systems (i.e., COMMAND NOT AVAILABLE).
Command Details
Set Cold Start: <DEV/CLD_xxx'cr' xxx = ON or OFF
Confirmation: >DEV/CLD_xxx'cr''lf']
Retrieve Status: <DEV/CLD_'cr'
Confirmation: >DEV/CLD_xxx'cr''lf']