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Agilent E1538A Enhanced Frequency/Totalize/PWM SCP 65
SOURce:FUNCtion:RPULse
SOURce:FUNCtion:RPULse (@<
ref_channel
>),(@<
ch_list
>) links
channels in <ch_list> to the rotational pulse function. The channel in
<ref_channel> will be linked to the SENS:FUNC:RVEL function to provide
the rotational reference information to SOUR:FUNC:RPUL.
Parameters
Comments • <ref_channel> must be a single channel and must be the first channel
on the SCP. The channel specified in <ref_channel> must be linked to
the SENS:FUNC:RVEL function before the INIT command is received.
See page 22 for more on RVEL. The related error messages are:
3111, "multiple channels are specified in reference channel list."
3112, "Channel specified is invalid for RPULse reference channel."
3119, "RPULse reference channel must be defined as RVELocity type."
• Channels in <ch_list> must be higher numbered and on the same SCP
as the channel specified in <ref_channel>. The related error messages
are:
3113, "Channel specified is not in same SCP as reference channel."
3114, "First channel in SCP can not be used in RPULse output channel
list."
3118, "Incomplete setup information for RPULse function. "
Notes 1. There must be one (and only one) channel on the same SCP that is set
to SENSe:FUNCtion:RVELocity. This sense channel provides the
rotational velocity and index reference that the SCP uses to position
the output pulses at a desired rotational angle. This is the
<ref_channel> seen above.
2. The lower velocity limit for RPULse is 108 teeth per Second (TPS)
for extra-tooth wheels, and 384TPS for missing-tooth wheels. For
example, a 60 tooth wheel would need to rotate at a minimum of
108RPM if it had an extra tooth, but at 384RPM minimum with a
missing tooth.
3. Long duration pulses that begin and end within a wheel’s missing
tooth area can exhibit significant jitter. Use an extra tooth wheel for
Parameter
Name
Parameter
Type
Range of
Values
Default
Units
ref_channel string 100, 108, 116, 124, 132, 140, 148, 156 none
ch_list string 100 - 163 none