8808A/SU 120V Fluke Electronics, 8808A/SU 120V Datasheet - Page 94

• Manufacturer Part Number: 8808A/SU 120V
• Description: USB CABLE KIT SW DMM 5.5 RES
• Manufacturer: Fluke Electronics
• Type: Digital (DMM)r

Specifications of 8808A/SU 120V

• Includes: Test Leads
• Style: Bench
• Display Digits: 5.5
• Display Type: VFD, Dual
• Display Count: 200000
• Function: Voltage, Current, Resistance, Frequency
• Functions, Extra: Continuity, dB, Diode Test
• Features: Hold, Min/Max, RS-232 Port
• Ranging: Auto/Manual
• Response: True RMS
• Lead Free Status / RoHS Status: Not applicable / RoHS non-compliant
• Other names: 614-1069

A-4
8808A
Users Manual
REL
HOLD
Primary
Display
The lead from the internal measuring circuitry of the meter to the LO terminal (on the
front panel) is the same for both voltage and current measurements. The resistance of this
lead is approximately .003 ohm. If current is being measured, therefore, a voltage drop
will occur in the resistance that is common to both circuits. This internal resistance, when
added to the external resistance of the lead from the COM input terminal will affect the
accuracy of the voltage reading. For instance, if the external lead resistance is .007 ohm,
the "total" common resistance is .010 ohm. If there is 1 A of current, the voltage reading
would be affected by
Depending on the circumstances, this may be significant.
If you want to measure dc voltage on an input signal in the primary display and dc
current in the secondary display, proceed as follows:
1. Turn the Meter on
2. Press D to select the dc voltage function for the primary display.
3. Press Q then E to select the dc current function for the secondary display.
4. Connect the leads to the test circuit as shown in Figure A-2 and read the
(1 A x.01ohm ) = .01 V or 10 m V.
measurements on the display. Although current will be displayed as negative, it is in
fact positive when interpreted according to current flow convention.
Figure A-2. DC Voltage and DC Current Measurement on Input Signal
Resistance
Actual Value
Secondary
Display
Table A-2. Sample Dual Display Applications (cont.)
Select and sort resistors. (See also "Using the Compare Function"
in Chapter 3.)
Show actual measurement while holding a previous, stable
measurement on the primary display
2W/4W
1000V
mA
750V
LO
HI
200 mA
MAX
MAX
V
INPUT
1000 V
600 V
500 V pk
10 A
MAX
1V
CAT I
CAT II
SENSE
4 W
300V
LO
10A
HI
Applications
8808A
5-1/2 DIGIT MULTIMETER
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