B.2 output data formats, B.3 command reference, A to f – BNC 645 User Manual

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B.2 Output Data Formats


Output data will be in one of formats shown in the table below.

Type of Output Data

Output Data Format

Non-reading queries

< 80 ASCII character string

Single reading (IEEE-488)

SD.DDDDDDDDESDD<nl>

Multiple readings (IEEE-488) SD.DDDDDDDDESDD,...,...,<nl>
S

Negative sign or positive sign

D

Numeric digits

E

Exponent

<nl>

newline character

<cr>

carriage return character

B.3 Command Reference


-- A to F --
-- A --


AM:INTernal
:FUNCtion{SINusoid|SQUare|RAMP|NRAMP|TRIangle|NOISe|USER}
Specify the modulating waveform for the modulation. This applies only when the
modulating source is internal. Noise can be a modulating waveform, but cannot
be used as a carrier waveform, neither do Pulse nor dc. The default modulating
waveform is a sine waveform.
AM:INTernal
:FUNCtion?
Query the modulating function in amplitude modulation. “SIN”, “SQU”, “RAMP”,
“NRAM”, “TRI”, “NOIS” or ”USER” string indicating the modulating function will
be returned.
-- Square waveform has 50% duty cycle.
--Ramp waveform has 100% symmetry
--Triangle waveform has 50% symmetry.
--Negative Ramp waveform has 0% symmetry.
--If an Arbitrary(USER) waveform is chosen to be the modulating waveform, it is

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