Operator`s manual

Signametrics 62
,80,1.5);
hile( ! DMMReady(0));
i++)
SM2064 ;
Description
clude "SMX
int DMMArmTrigger(int nDmm, int iPostTrig)
Remarks Setup the DMM for external hardware trigger mode (input at DIN7 connector).
Following reception of this command the DMM continuously makes measurements and
places them in a circular buffer, while waiting for the for the selected trigger edge. All
ments a currently set Aperture and Read Interval. On reception of
the selected trigger edge the DMM makes iPostTrig samples at the currently function and
oring th he buffer. The result is a buffer containing both, pre-trigger and
iPostTrig post-trigger samples. The total number of which is limited to the buffer size
s). With
ing the
, IAC,
age. Following completion of the capture process, Use the
DMMGetTriggerInfo function to get information related to the operation. The Trigger
olarity can be set with the DMMSetTrigPolarity function.
nput must be at least as wide as the selected Aperture and/or
er is greater.
r completion of the capture
DMMReadBufferStr, DMMSetReadInterval, DMMSetSync, and DMMSetAperture.
Parameter
DMMArmAnalogTrigger(0
w
for(i=0; i < 80 ;
j = DMMReadBuffer(0, &Buffer[i]);
DMMArmTrigger
SM2060 ;
Arm DMM for external trigger operation.
#include "SMX2060.h"
#in 2060.h"
measure re made at the
range, st em to t
(120 or 80 depending on set Aperture. See DMMArmAnalogTrigger for detail
the exception of the DMMReady and DMMDisarmTrigger commands, follow
issue of the DMMArmTrigger command, no other function should be sent to the DMM
prior to reading the captured data. This function is usable for VDC, VAC, Ohms
RTD and IDC and Leak
Edge p
The width of the trigger i
Read Interval, whichev
Following DMMArmTrigger, use the DMMReady to monito
process. When the DMM is ready read the buffer using DMMReadBuffer or
DMMReadBufferStr functions. Make 120 or 80 read operations to read both, the pre-
trigger and post-trigger (iPostTrig) samples. Following trigger operation, once
DMMReady returns TRUE, it should not be called again since it prepares the buffer for
reading when it detects a ready condition. Other related functions include,
Type/Description
nDmm
int Identifies the DMM. DMMs are numbered starting with zero.
iPostTrig
int The number of samples the DMM takes following a trigger. This
value must be between 1 and 80 or 120 depending on set resolution.
eturn Value The return value is one of the following constants.
R
Value Meaning
DMM_OKAY
Operation successfully terminated