Fluke Portable Multimedia Player 8842a Benutzerhandbuch
Maintenance
INTRODUCTION
6
6-3
WARNING
THESE SERVICE INSTRUCTIONS ARE FOR USE BY QUALIFIED
PERSONNEL ONLY. TO AVOID ELECTRIC SHOCK, DO NOT
PERFORM ANY PROCEDURES IN THIS SECTION UNLESS YOU
ARE QUALIFIED TO DO SO.
PERSONNEL ONLY. TO AVOID ELECTRIC SHOCK, DO NOT
PERFORM ANY PROCEDURES IN THIS SECTION UNLESS YOU
ARE QUALIFIED TO DO SO.
6-1. INTRODUCTION
This section presents maintenance information for the 8842A. The section includes a
performance test, a calibration procedure, troubleshooting information, and other general
service information.
performance test, a calibration procedure, troubleshooting information, and other general
service information.
Test equipment recommended for the performance test and calibration procedure is listed
in Table 6-1. If the recommended equipment is not available, equipment that meets the
indicated minimum specifications may be substituted.
in Table 6-1. If the recommended equipment is not available, equipment that meets the
indicated minimum specifications may be substituted.
Table 6-1. Recommended Test Equipment
INSTRUMENT
TYPE
MINIMUM SPECIFICATIONS
RECOMMENDED MODEL
PREFERRED:
Voltage Range: 0-1000V dc
Voltage Accuracy: 10 ppm
Absolute Linearity: ±1.0 ppm
Fluke 5700A or Fluke 5440A
ALTERNATIVE:
(Must be used with Kelvin-
Varley Voltage Divider)
Voltage Range: 0-1000V dc
Voltage Accuracy: 20 ppm + 20 ppm
of range
of range
Fluke 720A
DC Calibrator
Kelvin-Varley Voltage Divider:
Ratio Range: 0-1.0
Absolute Linearity: ± 1 ppm of input
at dial setting
at dial setting
Fluke 720A
Resistor Calibrator
Resistance Accuracy: 0.0005%
Fluke 5700A or Fluke 5450A, ESI
DB62
DB62
DC Current Source
Accuracy: ±0.025%
Fluke 5700A or Fluke 5100B
Oscilloscope
General porpose, 60 MHz, with 10
M
M
Ω
probe
Philips PM3055 or PM3355
Digital Multimeter
Voltage Accuracy
:0.01% in V dc
1.0% for 1V in V ac @ 100 kHz
Input Impedance:
10 M
Ω
or greater in V dc;
1 M
Ω
or greater in parallel with
<
100
pF in V ac
Fluke 8842A (with AC Option –09)