BNC 845-M User Manual
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Model 845-M Programmer’s Manual V1.1 2011
:SWEep:PROGgress
[SOURce]:SWEep:PROGgress?
This query returns the progress of an active sweep, 0.0…1.0.
:SWEep:SPACing
[SOURce]:SWEep:SPACing LINear | LOGarithmic
[SOURce]:SWEep:SPACing?
This command enables the signal generator linear or logrithmic sweep modes. These commands require
the signal generator to be in step mode.
The instrument uses the specified start frequency, stop frequency, and number of points for both
linear and log sweeps.
*RST LIN
:STARt
[SOURce]:POWer:STARt
[SOURce]:POWer:STARt?
This command sets the first amplitude point in a step sweep.
*RST ?
Range Refer to
[:LEVel][:IMMediate][:AMPLitude]
command for the output power ranges.
:STOP
[SOURce]:POWer:STOP
[SOURce]:POWer:STOP?
This command sets the last amplitude point in a step sweep.
*RST ?
Range Refer to
[:LEVel][:IMMediate][:AMPLitude]
command for the output power ranges.
[SOURce]:AM Subsystem (Amplitude Modulation)
Command
Parameters
Unit (default)
[SOURce]:AM:DEPTh
0.8 (80 PCT)
[SOURce]:AM:STATe
ON|OFF|1|0
[SOURce]:AM:INTernal:FREQuency
400 Hz
[SOURce]:AM:SOURce
INTernal| EXTernal
:AM:DEPTh [SOURce]:AM[:DEPTh]:
This command sets the amplitude modulation depth 0...1.
*RST 0.8
Range 0-0.99
:AM:INT:FREQuency
[SOURce]:AM:INTernal:FREQuency
[SOURce]:AM:INTernal:FREQuency?
This command sets the internal amplitude modulation rate.
*RST 400 Hz
Range 10 Hz to 50’000 Hz
The RF carrier is modulated when you have set the signal generator’s AM modulation state to
ON. Whenever amplitude modulation is enabled, the AM on is in the display.