Fluke 2635A user manual Trigger Inputs, Input Voltages, Maximum Latency, Repeatability

Appendices

Specifications A

Input Voltage

30V maximum

-4V minimum

Isolation

none

dc-coupled

Threshold

1.4V

Hysteresis

500 mV

Trigger Inputs

Input Voltages

contact closure and TTL compatible “high” =2.0V min, 7.0V max

“low” = -0.6V min, 0.8V max

Isolation

None dc-coupled

Minimum Pulse Width

5 µs

Maximum Frequency

5 Hz

Specified Conditions

The instrument must be in the quiescent state, with no interval scans in process, no commands in the queue, no RS-232 activity, and no front panel activity if the latency and repeatability performance is to be achieved.

Maximum Latency

Latency is measured from the edge of the trigger input to the start of the first channel measurement for the Specified Conditions (above).

540 ms for fast rate, scanning DCV, ACV, ohms, and frequency only

610 ms for fast rate, scanning any thermocouple or 100 mV dc channels

500 ms for slow rate, scanning DCV, ACV, ohms, and frequency only

950 ms for slow rate, scanning any thermocouple or 100 mV dc channels

Repeatability

3 ms for the Specified Conditions (above)

A-15