85RF Fluke Electronics, 85RF Datasheet - Page 43

• Manufacturer Part Number: 85RF
• Description: PROBE HIGH FREQ 500MHZ
• Manufacturer: Fluke Electronics
• Type: High Frequencyr

Specifications of 85RF

• Impedance: 10M Ohm
• Voltage - Max: 30VRMS, 200VDC
• Lead Free Status / RoHS Status: Lead free by exemption / RoHS compliant by exemption
• Ratings: -
• Current Rating: -
• Color: -
• Termination: -
• Wire Insulation Material: -
• Cable Length: -
• Other names: 532457

2-20. Diode Test ( G )
Selection of the diode test is described in Figure 2-14. Notice how the test
leads are placed to forward-bias or reverse-bias the diode in the figure.
The diode test measures the forward voltage of a semiconductor junction (or
junctions) at a 1 mA ( 10%) test current. Readings are displayed in the 2V
range, with OL displayed for voltages greater than 2V. For a silicon diode,
the typical forward voltage at 1 mA is about 0.6V. A reverse-biased
semiconductor junction should display the overrange (OL) indicator
provided that any resistance parallel to the junction is greater than 2 k .
Diode Test (
1. Press both switches
2. Set switch to select
3. Ensure all other switches
4. Connect the test leads as shown.
5. Heed the input overload limits
6. Read the measured value on the display.
simultaneously
diode test
are out (except the AC/DC
switch which can be in or out).
(Table 2-2) and connect the test
leads to diode being measured.
Forward Bias:
Reverse Bias:
Red
Black
)
Black
Red
Figure 2-14. Diode Test
Operation Instructions
Typical reading +
forward-biased
silicon diode.
Overrange display
if parallel resistance
is >2 K .
Operation
Low (-)
High (+)
dy17f.eps
2-21
2