Keithley 6430

Specifications A-11
Source On Time ≅ Source Configuration + Source Delay + A/D Conversion + Firmware
Overhead
Example: Source Delay = 0
NPLC Setting = 0.08 PLC
Power Line Frequency = 60Hz
Source On Time
≅ 50µsec + 0 + [(0.08 × 1/60) + 185µsec] + 40µsec
≅ 1.85msec for Source V
≅ 2.2msec for Source I
Case IV: Auto-Zero disabled and all measurements disabled
Trigger Latency: 225µsec max
Source Configuration: 50µsec max
Firmware Overhead: 310µsec for Source V
590µsec for Source I
Source On Time
≅ Source Configuration + Source Delay + Firmware Overhead
Example: Source Delay = 0
Source On Time
≅ 50µsec + 0 + 125µsec
≅ 360µsec for Source V
≅ 640µsec for Source I
Trigger
Latency
Trigger
Event
Source
On
Source On Time
Source
Off
Trigger
Delay
Source
Configuration
Source
Delay
F i g u r e A-4
Case IV timing
diagram