Settling Time Delay Values - Fluke 2638A User Manual

2638A
Users Manual
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•
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Channel List
Channel 102
Channel 104
Channel 115
Channel Delay Set
Channel 117
Channel Delay Set
Channel 121
4-4
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The total channel sample time is the minimum sample time plus the user-
programmed channel delay. The longer the channel delay, the longer it takes to
sample the channel.
The total scan sweep time is sum of the channel sample times of all the channels
scanned. A scan sweep will start when the selected trigger source is asserted if a
previous scan sweep is not still in progress (see "Trigger Type" on page 4-6).
The interval at which scan sweeps occur can be fixed by programming the trigger
type to Timer and setting an interval time.
SCAN START
Scan Cycle 1
Sweep Time
Scan Interval
Figure 4-2. Illustration of a Scan Sweep
Table 4-2. Settling Time Delay Values
Type and Range
100 mV dc
1 V dc
10 V dc
100 V dc
300 V dc
ACV all ranges 20 Hz filter
ACV all ranges 200 Hz filter
A dc (all ranges)
Fluke-Direct
Key:
*Consists of NPLC time, settling time, and ADC samples.
Scan Cycle 2
Remaining
Interval
Sweep Time
Scan Interval
Time Delay
- Sample Time*
- Channel Delay
Remaining
Remaining
Interval
Interval
SCAN FINISH
hcn050.eps
0 ms
0 ms
0 ms
100 ms
100 ms
400 ms
100 ms
0 ms
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