85RF Fluke Electronics, 85RF Datasheet - Page 61

• 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

3-9.
Continuity measurement is a voltage comparison made in the resistance
mode as illustrated in Figure 3-6. The 8062A determines whether continuity
exists in the circuit under test by comparing the voltage drop across the
external circuit with a continuity reference voltage. If the voltage drop across
the external circuit is less than the reference voltage, the comparator sends
the appropriate signal to the continuity logic. The continuity logic notifies
the microcomputer which turns on the visible indicator (the full-length bar
across the top of the display). If the audible indicator is enabled, the
continuity logic enables the tone generator.
The direction threshold is typically 50% of the full scale resistance range
selected. When the 8062A detects continuity for brief intervals (50 s or
greater), the microcomputer extends the visible and audible indication to a
minimum of 200 ms to allow easy perception by the operator.
Common
V/ /S
Continuity Measurement
Unknown
Resistor
Figure 3-6. Resistance/Continuity Measurement
Continuity
Ref V
Source
Ohms
Resistor
Known
Ref
+
CM+
CM-
Internal to the MAC
Comp.
Functional Description
Converter
Theory of Operation
Known
ORef +
to A/D
ORef -
V Ref
Continuity
Logic
To
Converter
LO
Unknown
HI
V to A/D
dy30f.eps
3-11
3