Fluke 8921A, 8920A Service manual

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Fluke 8921A, 8920A Service manual

Manual Supplement

Manual Title:

8920A/8921A

Supplement Issue:

8

Part Number:

487157

Issue Date:

6/99

Print Date:

October 1978

Page Count:

4

Revision/Date:

 

 

 

 

 

 

 

 

 

 

 

This supplement contains information necessary to ensure the accuracy of the above manual. Enter the corrections in the manual if either one of the following conditions exist:

1.The revision letter stamped on the indicated PCA is equal to or higher than that given with each change.

2.No revision letter is indicated at the beginning of the change.

© 1999 Fluke Corporation. All rights reserved. Printed in the U.S.A.

®

8920A/8921A

Manual Supplement

Change #1

On page 1-4, replace everything on the page with the following:

AC + DC (add to AC specification. Assume 100 Hz if AC component is negligible.) :

Accuracy:

 

Above 2 mV

+/-(10 digits or 0.5 dB)

Below 2 mV

+/-(100 digits or 5 dB)

Temperature Coefficient (0 to 18 degree C/28 to 50 degree C):

Above 2 mV

+/-(2 digits/degree C or 0.1 dB/degree C)

Below 2 mV

+/-(20 digits/degree C or 1 dB/degree C)

Change #2

On page 4-20, replace Table 4-12 with the following:

Table 4-12. R19/R34, R66/R76 Resistive Values (mF, ±1%, 1/8W)

VALUE

VALUE

VALUE

VALUE

 

 

 

 

499 K

34.8 K

68.1 K

24.3 K

 

 

 

 

332 K

32.4 K

57.6 K

22.6 K

 

 

 

 

169 K

30.1 K

48.7 K

21.5 K

 

 

 

 

115 K

28.0 K

43.2 K

20.5 K

 

 

 

 

86.6 K

26.1 K

38. K

19.1 K

 

 

 

 

Change #3

On page 4-2, add the following to the bottom of Table 4-1:

EQUIPMENT

REQUIREMENT

 

RECOMMENDED

 

NONMENCLATURE

 

 

 

EQUIPMENT

 

 

 

 

 

 

 

 

 

 

 

Input Filter

500 Hz

 

 

Figure A.

 

Input Filter

50 kHz

 

 

Figure B.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

INPUT FILTERS

 

 

 

 

 

 

500 Hz

 

 

 

 

50 Hz

 

100 W

 

 

 

 

100 W

 

 

.1 mf

 

 

 

 

510 pf

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8920_21_figa.eps

8920_21_fig_b.eps

Figure A.

Figure B.

6/99

1

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