Publication No. 980935 Rev. A
3152B User Manual
EADS North America Test and Services
Programming Reference 5-35
The 3152B returns the current sample clock frequency in scientific notation, e.g., 100MHz would be 100e6.
FREQuency:RASTer:SOURce {INTernal|EXTernal|ECLTrg0|LBUS<n>}(?)
HS Syntax: 0411A<3|4|16|32>(?)
Description
Selects the source for the sample clock. This command affects standard, arbitrary, and sequenced
waveforms. The ECLTrg0 and the LBUS<n> sources are useful for applications requiring synchronization
between adjacent modules.
Parameters
Name
Type
Default
Description
INTernal
Discrete
INT
Selects an internal source.
EXTernal
Discrete
Activates the external sample clock reference input. An
external reference must be connected to the 3152B, in
the range of the internal source, for it to continue normal
operation. Observe the input level and limitations before
connecting an external signal.
ECLTrg0
Discrete
Activates the backplane ECLTrg0 as the source for the
sample clock input. Signal must be generated from
another module in the chassis on this line, otherwise,
the 3152B will not operate correctly. Observe the input
level limitations before connecting an external signal to
this line.
LBUS<0-7>
Discrete
Activates a selection from LBUS0 to LBUS7 as the
source for the sample clock input. Signal must be
generated from another module in the chassis on this
line otherwise the 3152B will not operate correctly.
Response
The 3152B returns INT, EXT, ECLT0, or LBUS<n> depending on the current sample clock source setting.
VOLTage {<ampl>|MINimum|MAXimum}(?)
HS Syntax: 0500A<float>(?)
Description
Programs the peak to peak amplitude of the output waveform. The amplitude is calibrated when the source
impedance is 50
Ω
.
Parameters
Name
Range
Type
Default
Description
<ampl>
10e-3 to
16e0
Numeric
5
Sets the amplitude of the output waveform in units of
Volts. Amplitude setting is always peak to peak. Offset
and amplitude settings are independent providing that
the amplitude does not exceed 16.
<MINimum>
Discrete
Sets the amplitude to the lowest possible level (10mV).
MAXimum>
Discrete
Sets the amplitude to the highest possible level (16V).
Response
The 3152B returns the current amplitude value. The returned value will be in scientific notation, e.g., 100 mV
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