Radyne ComStream SFC6400A, Installation And Operation Manual

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SFC6400A/SFC1450A Synthesized Frequency Upconverter Appendix A
TM106 – Rev. 1.1 A-11
A.6 Set Current Channel Frequency Command (S, P1:1, P1:8)
This command alters the stored frequency of the current channel. The command is as follows:
@01/SETFREQffff.t<cr>
The frequency numerical values include four digits for MHz and one digit "t" which indicates the
resolution in 125 kHz steps.
The values of "t" are as follows:
t frequency
0 000 kHz
1 125 kHz
2 250 kHz
3 375 kHz
4 500 kHz
5 625 kHz
6 750 kHz
7 875 kHz
Valid frequency ranges are dependant upon device configuration: To see range for current
configuration, send the SETFREQ Command without any data (i.e. “@01SETFREQ<cr>”). This will
result in an error message being returned that contains the current freq limits. Frequencies outside
this range or frequencies that are of an invalid form will be responded to by the ‘illegal frequency’
prompt. If the synthesizer is unable to tune to the desired band and frequency, the converter will
indicate an LO Fault Condition status indication and will change to an off-line or out-of-service
indication.
If successful, the converter will return the following string:
For Upconverter:
<cr><lf>
Channel: cc
{cc = current channel number, 01 to 30}
Frequency: ffff.fff {ffff.fff = frequency in MHz}
Gain: sgg.g {s = ± and gg.g = gain in dB}
Input Atten: aa dB {aa = input attenuation}
Stored Faults: {None/Signal Fault/LO Fault/LO Fault, Signal Fault}
Reference: {Internal/External}
<cr><lf>
<cr><lf>
{End of transmission}
For Upconverter:
<cr><lf>
Channel: cc
{cc = current channel number, 01 to 30}
Frequency: ffff.fff {ffff.fff = frequency in MHz}
Stored Faults: {None/Signal Fault/LO Fault/LO Fault, Signal Fault}
Reference: {Internal/External}
<cr><lf>
<cr><lf>
{End of transmission}