85RF Fluke Electronics, 85RF Datasheet

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85RF

Manufacturer Part Number
85RF
Description
PROBE HIGH FREQ 500MHZ
Manufacturer
Fluke Electronics
Type
High Frequencyr
Datasheets
1.85RF.pdf (124 pages)
2.85RF.pdf (4 pages)

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
®
Instruction Sheet
85RF
INTRODUCTION
The 85Rf High Frequency Probe is designed to convert a dc
voltmeter into a high frequency (100 kHz to 500 MHz) ac
voltmeter. Conversion from ac to dc is accomplished on a
one-to-one basis and includes a range of 0.25 to 30V rms.
The probe’s dc output is calibrated to be equivalent to the
rms value of a sine wave input.
SPECIFICATIONS
AC to DC RATIO: 1:1
e
RATIO ACCURACY: (At 25 MHz and loaded with 10 M
)
Above 0.5V: ± 0.5 dB
Below 0.5V: ± 1.0 dB
Add ± 0.2 dB in RF fields of 1 to 3 V/m
FREQUENCY RESPONSE: (Relative to 25 MHz)
100 kHz to 100 MHz ± 0.5 dB
*100 MHz to 200 MHz ± 2.0 dB
*200 MHz to 500 MHz ± 3.0 dB
*Referred to high and low inputs at probe tip.
EXTENDED FREQUENCY RESPONSE:
Useful for relative readings from 20 kHz to 700 MHz.
RESPONSE:
Responds to the peak value of an input and is calibrated to
read rms value of a sine wave.
VOLTAGE RANGE: 0.25 to 30V rms
MAXIMUM INPUT VOLTAGE: 30V rms, 200V dc
INPUT CAPACITANCE: Approximately 3 pF
TEMPERATURE RANGE:
Operating: +10°C to +35°C
Storage: -40°C to +75°C
HUMIDITY: <90% R.H.
OUTPUT CONNECTOR: Fits standard 0.75-inch dual
banana connectors
ACCESSORY: BNC to Probe Adapter, P/N 574756
VOLTMETER COMPATIBILITY
The 85RF is compatible with any dc voltmeter that has an
input resistance of 10 megohms, ±10%. Voltmeters with
higher input resistances can be used if an external shunt is
placed across their input terminals. The shunt value is
selected to reduce the input resistance to 10 megohms.
PN 630376
July 1981, Rev.5, 12/99
©1981,1989,1996,1999 Fluke Corporation, All rights reserved.
Printed in the U.S.A.
All product names are trademarks of their respective companies.

85RF Summary of contents

Page 1

... ACCESSORY: BNC to Probe Adapter, P/N 574756 VOLTMETER COMPATIBILITY The 85RF is compatible with any dc voltmeter that has an input resistance of 10 megohms, ±10%. Voltmeters with higher input resistances can be used if an external shunt is placed across their input terminals. The shunt value is selected to reduce the input resistance to 10 megohms ...

Page 2

... Diode CR2 compensates for the low level linearity error caused by diode CR1. MAINTENANCE Performance Test/Calibration The performance test is designed to ensure that the 85RF is operating within specifications. Use the procedure as an acceptance test and/or calibration procedure (the probe has one adjustment). The recommended calibration interval in one year ...

Page 3

... AC INPUT C1 R1 Figure 1. Schematic Diagram Required Equipment List The following equipment (or equivalent) is required for testing the performance of the 85RF: EQUIPMENT TYPE AC Calibrator 50-Ohm Feed Thru Termination BNC Jack to Banana Plug Adapter BNC to Probe Adapter Digital Multimeter, 3- 1/2 Digit (DMM) BNC Jack to Jack ...

Page 4

... Cleaning Use a soft cloth dampened in a mild solution of detergent and water to clean the 85RF. Do not use solvents. 85RF PARTS LIST DESCRIPTION C1 Cap, Ceramic Chip, 220 pF ...