Mpedance - Control Byte #116 (74 Byte #117 (75 H ); Ontrol Byte #118 (76 H ) - Anritsu Spectrum Master MS2711D Programming Manual

Read Marker Value – Control Byte #117 (75h)
Description: Returns the frequency location of the specified marker, and the value at that location.
If option 6 is installed and the frequency converter module is attached, the frequency will be scaled by the scale
factor of the module. If the module is not attached, the frequency is sent in Hz. Use Control Word A203 to
determine whether a module is attached and the appropriate scale factor.
Bytes to Follow: 1 byte
1) Marker number (1-6)
Spectrum Master Returns: 8 bytes (1 byte if an error occurs)
1) Frequency (Highest byte)
2) Frequency
3) Frequency
4) Frequency (Lowest byte)
5) Value at Marker (Highest byte)
6) Value at Marker
7) Value at Marker
8) Value at Marker (Lowest byte)
OR
1) 224 (E0h) Parameter Error: Invalid marker number
238 (EEh) Time-out Error
Note:
Marker value sent as (value in dBm * 1,000) +270,000
If markers are set to be noise markers, convert the returned dBm value to dBm/Hz using this formula (only if
detection method is RMS Average):
marker (in dBm/Hz) = marker value (in dBm) - 10 * log10(RBW) - 0.13
Set Sweep Averaging – Control Byte #118 (76h)
Description: Sets the number of sweeps to average. The maximum number is 25. Sending a 1 turns averaging off.
Bytes to Follow: 1 byte
1) Number of sweeps to average (1-25, 1 turns averaging OFF)
Spectrum Master Returns: 1 byte
1) 255 (FFh) Operation Complete Byte
224 (E0h) Parameter Error
238 (EEh) Time Out Error
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