Fluke 8845A FE 8845A & 8846A Users Manual - Page 48

Setting the AC Signal Filter, Setting Continuity Resistance Threshold and Diode Test Parameters

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8845A/8846A Users Manual The soft key labels are updated with five choices. 4 DIGIT .02 PLC 5 DIGIT .2 PLC 5 DIGIT 1 PLC 6 DIGIT 10 PLC 6 DIGIT 100 PLC These choices determine the displayed resolution (4½, 5½, and 6½ digits) and the measurement cycle time in reference to the power ling frequency in cycles (PLC) For example, selecting 5 DIGIT 1 PLC will display 5½ digit resolution and take a measurement once for each power line cycle. For 60 Hz power, a measurement is made once every 60th of a second. Or 16.6666 milliseconds. 3. Press the soft key labeled with the desired resolution. To set the Meter's display resolution for ac volts, ac current, frequency, period, capacitance and temperature: 1. Press L to see the measurement Setup menu. 2. Press the soft key under the DIGITS PLC label to reveal the resolution selection menu. Three soft key labels are updated with HIGH, MEDIUM, and LOW. The actual number of digits displayed will depend on the selected function and the Meter's range. 3. Press the soft key labeled with the desired resolution. Setting the AC Signal Filter There are three ac filters that can be employed to help make more accurate measurements: 3 Hz Slow, 20 Hz, and 200 Hz. For the ac volts and ac current functions, a filter selection is available as a modifier. Pressing the Filter soft key will expose a menu that allows you to select between the three filters. Note The 20 Hz filter is the power-up default selection. Setting Continuity Resistance Threshold and Diode Test Parameters The threshold resistance value for the continuity function and the amount of current and voltage used for Diode testing are adjustable. Continuity resistance threshold can be set to four different values: 1 Ω, 10 Ω, 100 Ω and 1 kΩ. Diode test voltage and current can also be set to two different values: 5 V or 10 V and 1 mA or 0.1 mA. Setting the Continuity Threshold Resistance The resistance threshold can be set at 1, 10, 100, or 1000 Ω. To set the threshold: 1. Press Lto see the Measurement Setup menu. 2. Press the MORE soft key. 3. Press the CONTIN OHMS soft key. 4. Press the soft key labeled with the desired threshold. 3-8

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8845A/8846A
Users Manual
3-8
The soft key labels are updated with five choices.
4
DIGIT
.02
PLC
5
DIGIT
.2
PLC
5
DIGIT
1
PLC
6
DIGIT
10
PLC
6
DIGIT
100
PLC
These choices determine the displayed resolution (4½, 5½, and 6½ digits) and the
measurement cycle time in reference to the power ling frequency in cycles (PLC)
For example, selecting
5 DIGIT 1 PLC
will display 5½ digit resolution and
take a measurement once for each power line cycle. For 60 Hz power, a measurement
is made once every 60
th
of a second. Or 16.6666 milliseconds.
3.
Press the soft key labeled with the desired resolution.
To set the Meter’s display resolution for ac volts, ac current, frequency, period,
capacitance and temperature:
1.
Press
L
to see the measurement Setup menu.
2.
Press the soft key under the
DIGITS
PLC
label to reveal the resolution selection
menu.
Three soft key labels are updated with
HIGH
,
MEDIUM
, and
LOW
. The actual
number of digits displayed will depend on the selected function and the Meter’s
range.
3.
Press the soft key labeled with the desired resolution.
Setting the AC Signal Filter
There are three ac filters that can be employed to help make more accurate
measurements: 3 Hz Slow, 20 Hz, and 200 Hz.
For the ac volts and ac current functions, a filter selection is available as a modifier.
Pressing the
Filter
soft key will expose a menu that allows you to select between the
three filters.
Note
The 20 Hz filter is the power-up default selection.
Setting Continuity Resistance Threshold and Diode Test Parameters
The threshold resistance value for the continuity function and the amount of current and
voltage used for Diode testing are adjustable. Continuity resistance threshold can be set to
four different values: 1
Ω
, 10
Ω
, 100
Ω
and 1 k
Ω
. Diode test voltage and current can also
be set to two different values: 5 V or 10 V and 1 mA or 0.1 mA.
Setting the Continuity Threshold Resistance
The resistance threshold can be set at 1, 10, 100, or 1000
Ω
. To set the threshold:
1.
Press
L
to see the Measurement Setup menu.
2.
Press the
MORE
soft key.
3.
Press the
CONTIN
OHMS
soft key.
4.
Press the soft key labeled with the desired threshold.