Front Panel Operation
2-30
SPEED
The SPEED parameter sets the integration time of the A/D
converter, the period of time the input signal is measured
(also known as aperture). It is discussed in paragraph 2.4.1,
DC and AC voltage. Only the differences for 2-wire and 4-
wire resistance are noted here.
SET-BY-RSLN:
This parameter optimizes the integration
time for the present resolution setting. The defaults for set-
by-resolution integration times of
Ω
2 and
Ω
4 are listed in
Table 2-18.
Table 2-18
Ω
2 and
Ω
4 integration time set-by-resolution
Resolution
Integration time
3.5d, 4.5d
5.5d
6.5d
7.5d
8.5d
0.01 PLC
0.02 PLC
0.10 PLC
1.00 PLC
10.00 PLC
Note: If the integration time is SET-BY-RSLN and
the resolution AUTO, the integration time will be 1.0
PLC and the resolution 7.5 digits.
FILTER
FILTER lets you set the digital filter response. The filter
menu is available from the function configuration menus (i.e.
CONFIGURE OHMS-2W) or by pressing CONFIGURE
FILTER with the desired function already selected. All of the
parameters (menu items) for FILTER are explained in para-
graph 2.9. Since the AUTO parameter has specific effects on
Ω
2 and
Ω
4, it is covered here.
AUTO:
This parameter for a digital filter optimizes its use
for the present measurement function. The defaults for auto-
matic filtering of
Ω
2 and
Ω
4 are listed in Table 2-19.
RESOLUTION
The RESOLUTION parameter sets the display resolution. It
is discussed in paragraph 2.4.1, DC and AC voltage. Only the
differences for
Ω
2 and
Ω
4 are noted here.
Note that all scientific notation displays are 7-1/2
digits.
Labels on the far right, such as channel number, may be
omitted to provide the desired precision.
Table 2-19
Ω
2 and
Ω
4 auto filter
Measurement
function
State
Type
Rdg.
Noise
tolerance
Avg.
Mode
2-wire resistance
4-wire resistance
On
On
Advanced
Advanced
10
10
1.0%
1.0%
Moving
Moving
Summary of Contents for 2002
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Page 145: ...IEEE 488 Reference 3 22...
Page 167: ...IEEE 488 Reference 3 44...
Page 284: ...A Specifications A 1...
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