240 Agilent N5181A/82A MXG Signal Generators SCPI Command Reference
SCPI Compatibility
8656B, 8657A/B/D/J Programming Codes
valid selection. (Refer to Table 6- 4.)
NOTE The 8656, 8657A/B/D/J signal generators allow multiple modulations to use the same input;
the N5181A/82A does not. If you configure multiple modulations on the same input, the
N5181A/82A automatically disables the modulations.
The mapping between the 8656B, 8657A/B/D/J- compatible programming codes and the SCPI
commands changes depending on the programming codes being executed. Refer to the following
sections for explanations of the codes that are affected.
PF (Pulse Modulation-Fast Mode) or PM (Pulse Modulation)
The N5181A/82A supports only one input selection for pulse which is EXTernal 1 (PULSE connector).
This is a DC- coupled input. Internal pulse modulation, therefore, is not supported in the 8656B,
8657A/B/D/J- compatible language modes. The PF or PM code is mapped to the following SCPI
commands:
• [:SOURce]:PULM:SOURce EXTernal1
• [:SOURce]:PULM:STATe ON
S1, S2, or S3 used with AM
When the AM code is executed, the following occurs:
• AM becomes the active function.
NOTE The N5182A has only one AM channel: [1]. If AM2 is used in a SCPI command, it will be
ignored and AM1 will be selected.
If AM is on, or there is no active modulation, a sequence of SCPI commands are implemented when
an AM code is executed with a modulation source code. Table 6- 5 shows the sequence of SCPI
Ta b l e 6 - 4
Modulation Sources
8656B, 8657A/B/D/J Agilent MXG Signal Generators
AM, Internal AM1, Internal 1
AM, External AM1, External 1
FM, Internal FM1, Internal 1
FM, External FM1, External 1
AM, Internal and External AM1, Internal 1, External 1
FM, Internal and External FM1, Internal 1, External 1
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