Anritsu Site Master S331D User Manual

Page 95

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16) Limit Value End X (lowest byte)

17) Limit Value End Y

273

(highest byte)

18) Limit Value End Y

19) Limit Value End Y

20) Limit Value End Y (lowest byte)

Site Master Returns: 1 byte

1)

255 (FFh) Operation Complete Byte

224 (E0h) Parameter Error: Invalid limit segment, status or value

238 (EEh) Time Out Error

Set Return Spectrum Analyzer Sweep Time – Control Byte #114 (72h)

Description: If this is enabled, the duration of the current sweep (in milliseconds) will be returned as 4 bytes via the serial

port at the end of the sweep. If Serial Echo Status is enabled, the 4 bytes will be returned AFTER the sweep complete byte.

Bytes to Follow: 1 byte

1)

Return SPA Sweep Time flag state

00h = Don’t Return Sweep Time

01h = Return Sweep Time

Site Master Returns: 1 byte

1)

255 (FFh) Operation Complete Byte

224 (E0h) Parameter Error: Invalid state

238 (EEh) Time Out Error

Set Reference Level Offset – Control Byte #115 (73h)

Description: Set the value of the reference level offset.

The reference level offset allows the user to view the result of trace math (A+B, A-B) even if it is greater than +20 dBm or

less than –120 dBm. The offset is a constant that is subtracted from the reference level.

Note that the valid range is –100 to +100 dB.

Send the value as (value in dB * 1000) + 270,000.

For example, to compensate for a 30 dB attenuator, the reference level offset should be -30 dB. That value would be sent

over the serial port as (-30 * 1000) + 270,000 = 240,000.

Bytes to Follow: 4 bytes

1)

Reference Level Offset (highest byte)

2)

Reference Level Offset

3)

Reference Level Offset

4)

Reference Level Offset (lowest byte)

Site Master Returns: 1 byte

1)

255 (FFh) Operation Complete Byte

224 (E0h) Parameter Error

238 (EEh) Time Out Error

Site Master PM

89

273 ( Value in dBm * 1000 ) + 270,000

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