85RF Fluke Electronics, 85RF Datasheet - Page 88

• 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

8062A
Instruction Manual
4-26
Table 4-7. Troubleshooting the Resistance Function: Voltage Sources
200
2 k
20 k
200 k
M
Range
Pin No.
10
11
1
2
3
4
5
6
7
8
9
Voltage Source
Mnemonic
Tone
CFO
CM+
CM-
VSS
HI
LO
FC+
FC-
COM
VREF+
Table 4-8. U3 (MAC) Pin Descriptions
( 10%)
4.5V
1.2V
1.2V
1.2V
2.1V
2.66 kHz square wave to tone generator.
Output, + input, - input, respectively, of the
continuity function comparator.
-5.1V supply (externally generated).
Input to the a/d converter.
Sense ground for the a/d converter.
Connections to the “flying capacitor” which
stores the reference voltage applied to the a/d
converter during the read period. Plus and
minus signs indicate polarity of stored voltage.
Analog common.
Input for 1V reference voltage for a/d converter
and power supply.
for Ranges
These values should be obtained when
no external resistors are connected to
the resistance inputs. Measure voltage
between common (J2) and TP10. Note
that the M and 200 k ranges will be
loaded by a 10 M input impedance.
Use a high impedance voltmeter for the
measurement or decrease the voltage
source magnitude appropriately. A DMM
with a 10 M input impedance will read
approximately 1.9V in the M
Description
Comment
range.