Anritsu Site Master S331D - Manual (Page 78)

Option 6: “6/”
Option 10: “10/”
Option 21: “21/”
Option 29: “29/”
Option 50: “50/”
If no options are installed: “None”
Query Power Level – Control Byte #39 (27h) (Option 29 only)
Description: Return Power Level at the RF In port. Also returns power meter settings.
Bytes to Follow: 0 bytes
Site Master Returns: 30 bytes
1) Status Byte # 1(0b = Off, 1b = On)
(LSB) bit 0 : Unit (0b - Watt/%, 1b - dBm/dB)
bit 2 : Relative Mode On/Off
bit 3: Offset Mode On/Off
bit 4: Zero Mode On/Off
bits 5-7: Not Used
2) RMS Averaging Status 263
3 - 6) Relative Mode Reference Power Level in dBm
7 - 10) Offset Mode Power Level
11 - 14) Zero Mode Power Level
15 - 18) Absolute Power Level
19 - 22) Power
23 - 26) Center Frequency
27 - 30) Span Frequency
Notes:
Power is returned as (dBm * 1000)
Relative power is returned as (dB * 1000)
Offset is returned as (dB * 1000)
Frequencies are scaled by the scale factor
Set Power Meter Units – Control Byte #40 (28h) (Option 29 only)
Description: Set Power Meter units to Watts or dBm.
Bytes to Follow: 1 byte
1) Units
00h = Watt (% if in relative mode)
01h = dBm (dB if in relative mode)
Site Master Returns: 1 byte
1) 255 (FFh) Operation Complete Byte
224 (E0h) Parameter Error: Invalid Units
238 (EEh) Time-out Error
72 Site Master PM
263 RMS Averaging: 00h = Off, 01h = Low, 02h = Medium, 03h = High