Keithley 2700, User Manual, Page: 255 / 500

8-4 Triggering Model 2700 Multimeter/Switch System User’s Manual
Delay (auto or manual)
A programmable delay is available after event detection. It can be set manually or an auto
delay can be used. With auto delay selected, the instrument automatically selects a delay
period that will provide sufficient settling for function and autorange changes and multi-
phase measurements.
Normal measurement state — With auto delay selected and the External or Bus control
source selected, the Model 2700 selects a delay based on the selected voltage range. The
auto delay period cannot be adjusted by the user. The auto delays are listed in
Table 8-1 .
With one of the other control sources selected, the auto delay is 0.000s for all functions
and ranges.
Scanning — When scanning, the nominal delay will be long enough to allow each switch-
ing module channel relay to settle before making the measurement. When scanning, the
auto delay times in
Table 8-1 are valid for all control sources.
The delay function is accessed by pressing SHIFT and then DELAY. The present delay
setting (AUTO or MANual) is displayed. Press the
Δ
or
∇
key to display the desired
setting and press ENTER.
Table 8-1
Auto delay settings
Function Range and delay
DCV 100mV
1ms 1V
1ms 10V
1ms 100V
5ms 1000V
5ms
ACV 100mV
400ms 1V
400ms 10V
400ms 100V
400ms 750V
400ms
FREQ and
PERIOD 100mV
1ms 1V
1ms 10V
1ms 100V
1ms 750V
1ms
DCI 20mA
2ms 100mA
2ms 1A
2ms 3A
2ms
ACI 1A
400ms 3A
400ms
Ω
2,
Ω
4 100
Ω
3ms
1k
Ω
3ms
10k
Ω
13ms
100k
Ω
25ms
1M
Ω
100ms
10M
Ω
150ms
100M
Ω
250ms
Continuity 1k
Ω
3ms
TEMP The auto delay for thermocouples is 1ms. For thermistors and 4-wire
RTDs, the auto delay period is the same as the delay for the resistance
range that is used for the measurement.