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SUNIT – Query Only
The OMNI-VII can report the signal strength of the receive hardware. This is not
affected by the Attenuator setting, nor the Pre-Amp. It returns the S-Units in receive
mode, and the forward / reflected power readings in transmit modes.
Format:
Where:
The most significant bit of the first data byte of the returned data indicates if the data
is for the S-Unit or for the Transmitted Forward / Reflected Power. If the bit is 0, then the
rig is in receive and the data is for the s-units. If bit is 1, then the rig is in transmit and the
data is the forward power and reflected power.
Returns:
Where:
1 Or –
Returns:
Where:
Example1:
Example2:
Example3:
Note: it is possible to get an S-Unit value of 0. This occurs when the unit
transitions from Transmit to Receive or from Receive to Transmit. Or it can occur when
transitioning from the Menu to the main display. So if 0 is read, then ignore it.
Rev 1.009
OMNI-VII Firmware Updates at www.rfsquared.com
'?' 'S' <CR>
'?' = the ASCII '?' symbol (0x3F)
S = the ASCII 'S' character (0x53)
"SABCD" <CR>
AB= Number of S Units in ASCII.
CD = dB above the S Unit X in ASCII
"S" <0xMM> <0xNN> <CR>
<0xMM> <b7>
<0xMM> <b6..0>
<0xNN>
If <0xMM> <b6..0> = 0, the forward power hasn't been read yet.
If <0xNN> = 0, then the reflected power hasn't been read yet.
S0944 <CR> means 44 over S9
S<0xe4> <0x02> <CR> means the OMNI-VII is in transmit mode
Since <0xMM><b6..0> = 0x64, forward power = 100 watts
Reflected power = 2 watts, SWR can be calculated.
S<0x8f> <0x00> <CR> means the OMNI-VII is in transmit mode
Since <0xMM><b6..0> = 0x0f, forward power = 16 watts
Reflected power = not read yet. SWR cannot be calculated yet.
OMNI-VII Programmer's Reference Guide
(or '?' 'F' <CR>)
(if in receive mode)
(if in transmit mode)
= 1 means transmit mode.
= Forward Power in Watts.
= Reflected Power in Watts.
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