GPIB Operation ML24xxA Native Commands
ML2437A/38A OM/PM PN: 10585-00001 Rev. P 8-83
TRGXTTL (Set external trigger edge type)
VZERO (Zero the BNC input connector)
ZERO (Zero the selected sensor)
Syntax: TRGXTTL <c>,<type>
c: 1, 2 or 1&2
type: RISE, FALL
Remarks: Sets the control type of the external trigger input used when the trigger
source is set to EXTTTL in READOUT or Power vs. Time mode.
Select channel 1, 2 or 1&2. Selecting 1&2 allows both channels to trigger
together on the same conditions without having to set up two sets of
trigger data. If external trigger is used on both trigger channels (1 and
2) the same TTL edge MUST be used on both channels.
Query: TRGXTTL? <c>
Returned String: TRGXTTL <c>,<type>
The TRG type commands return the trigger state of the selected channel
if the channel is ON. This depends on the settings of the “link triggers”
flag and the current mode of the sensor on the selected channel. If the
channel is OFF, the stored trigger state of the channel is returned.
Syntax: VZERO
Remarks: Zeros the multipurpose BNC connector used for Volts per GHz
connection (Analog Input 2). This will calibrate the units to read zero
volts on this BNC. During this operation the connector should either not
be connected to anything, or should be connected to a 0 Volt source. A
settling time must be allowed after this command before reading any
other commands.
Syntax: ZERO <s>
s: A or B
Remarks: Zero out the noise from the selected sensor.
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