FLUKE-88-5 Fluke Electronics, FLUKE-88-5 Datasheet - Page 32

• Manufacturer Part Number: FLUKE-88-5
• Description: MULTIMETER AUTOMOTIVE 88V
• Manufacturer: Fluke Electronics
• Series: 8xr
• Type: Digital (DMM)r

Specifications of FLUKE-88-5

• Includes: Battery, Hanger, Temperature Probe, Test Leads
• Style: Handheld
• Display Digits: 4.5
• Display Type: LCD, Bar Graph
• Display Count: 20000
• Function: Voltage, Current, Resistance, Capacitance, Temperature, Frequency
• Functions, Extra: Continuity, Diode Test
• Features: Auto Off, Backlight, Hold, Min/Max/Ave
• Ranging: Auto/Manual
• Response: Average
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 2550519

Users Manual
Testing Diodes
Use the diode test to check diodes, transistors, silicon
controlled rectifiers (SCRs), and other semiconductor
devices. This function tests a semiconductor junction by
sending a current through the junction, then measuring
the junction's voltage drop. A good silicon junction drops
between 0.5 V and 0.8 V.
To test a diode out of a circuit, set up the Meter as shown
in Figure 6. For forward-bias readings on any
semiconductor component, place the red test lead on the
component's positive terminal and place the black lead on
the component's negative terminal.
In a circuit, a good diode should still produce a forward-
bias reading of 0.5 V to 0.8 V; however, the reverse-bias
reading can vary depending on the resistance of other
pathways between the probe tips.
22
To avoid possible damage to the Meter or to
the equipment under test, disconnect circuit
power and discharge all high-voltage
capacitors before testing diodes.
XWCaution
A short beep sounds if the diode is good (<0.85 V). A
continuous beep sounds if the reading is 0.100 V. This
reading would indicate a short circuit. The display shows
“OL” if the diode is open.