Keithley DMM7510 Reference Manual

Mode
l DMM7510 7½ Digit Graphical Sampling Multimeter Reference Manual Section 6:
SCPI command reference
DMM7510-901-01 Rev. B / May 2015 6-229
Details
The event constant is the event that ends infinite triggering or ends readings set to occur before the
trigger and start post-trigger readings. The trigger model makes readings until it detects the event
constant. After the event, it makes a finite number of readings, based on the setting of the trigger
position.
The position marks the location in the reading buffer where the trigger will occur. The position is set
as a percentage of the active buffer capacity. The buffer captures measurements until a trigger
occurs. When the trigger occurs, the buffer retains the percentage of readings specified by the
position, then captures remaining readings until 100 percent of the buffer is filled. For example, if this
is set to 75 for a reading buffer that holds 10,000 readings, the trigger model makes 2500 readings
after it detects the source event. There will be 7500 pre-trigger readings and 2500 post-trigger
readings.
The instrument makes two sets of readings. The first set is made until the trigger event occurs. The
second set is made after the trigger event occurs, up to the number of readings calculated by the
position parameter.
You cannot have the event constant set at none when you run this predefined trigger model.
The out line of the EXT TRIG IN/OUT rear-panel terminal is asserted at the end of each
measurement.
You can use the TRIGger:BLOCk:LIST? command to view the trigger model blocks in a list format.

Keithley DMM7510 Specifications

General

Resolution	7.5 digits
DC Voltage Range	100 mV to 1000 V
AC Voltage Range	100 mV to 750 V
DC Current Range	10 µA to 10 A
Resistance Range	10 Ω to 1 GΩ
Sampling Rate	1 MS/s
Memory	27.5 million readings
Display	5 inch capacitive touchscreen
AC Voltage Accuracy	±0.06% of reading
AC Current Range	10 A
Connectivity	USB, LAN, GPIB