Rohde & Schwarz SMB100A - Source:input Subsystem; Source:lfoutput Subsystem

Remote Control Commands
R&S
®
SMB100A
310Operating Manual 1407.0806.32 ─ 13
7.12.5 SOURce:INPut Subsystem
The SOURce:INPut subsystem contains the commands for configuring the inputs for
external modulation signals. The instrument trigger setting influences all sweeps and is
effective in the List mode (Instrument Trigger).
[:SOURce<hw>]:INPut:MODext:IMPedance......................................................................310
[:SOURce]:INPut:TRIGger:SLOPe...................................................................................310
[:SOURce<hw>]:INPut:MODext:IMPedance <Impedance>
This command sets the impedance for external feed via the MOD EXT input.
Parameters:
<Impedance> HIGH | G600
HIGH
> 100 k0hm to ground
*RST: HIGH
Example:
INP:MOD:IMP HIGH
the EXT MOD input is set to > 100 kOhm to ground.
Manual operation: See "External Input Impendance" on page 172
[:SOURce]:INPut:TRIGger:SLOPe <Slope>
Sets the polarity of the active slope of an externally applied trigger signal at the trigger
input (BNC connector at the rear of the instrument).
The setting is effective for both inputs at the same time.
Parameters:
<Slope> NEGative | POSitive
*RST: POSitive
Example:
INP:TRIG:SLOP NEG
activates the falling slope of the external trigger signal at the trigger
input.
Manual operation: See "Trigger Input Slope" on page 154
7.12.6 SOURce:LFOutput Subsystem
This subsystem contains the commands for setting the LF signal source in CW and
Sweep mode as well as for analog modulation.
Example
The following example shows how to set an LF sweep.
1. Set the sweep range.
LFOutput:FREQuency:STARt 4 kHz
SOURce Subsystem