HP 5384A Service Manual

HP 5384A and HP 5385A
Adjustments
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HP·!B SH1. AH1, TS TE0. l4,lE0 SRI, RL1. E3
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A5 Al
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1::1:1 • 31o::fALK ONLY
TCXO ADJU§_T AND
STANDARD OSC
FINE ADJUST
(A1C66)
10 MHz REFERENCE
INT. EXT. SELECT SWITCH
Figure 5-7. TCXO and Standard Oscillator Adjustment
A1C65 (coarse adjustment, see Figure 5-8 for location)
until the display is close enough for adjustment with
A1C66.
NOTE
For access to A 1 C65, remove the top cover. The
interface
board should not have to be removed
to access and adjust A1C65. Remove the top
cover by removing the 4 screws located at the
bottom of the counter.
e. By timing the sideways movement (in em/
second), the approximate offset can be determined
based on the HP 1740A oscilloscope sweep speed as
shown in Table 5-2.
Table 5-2. Approximate Offset Determination Table
MOVEMENT
SWEEP SPEED
NOTES
11ls/cm
0.1/ls/cm 0.01/lS/Cm
1cm/s
1X10-6
1X1Q-7 1X10-B
Time scope
trace move-
1cm/10s
1X1Q-7
1X1Q-8
1X1Q-9
ment with
second
1cm/1000s
1X10-8
1X1Q-9 1X1Q-10
hand of
watch or
clock
JS 1 '-' ______ __,14
COARSE
ADJUST
S-6
R109
Q9
RSO
R83
=:J RSS
=:J R81
=:! CJ
7
9 C45
~10 ~
-& 5V!1t C74
D
c::::::::::J
R63
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Figure 5-8. Standard Oscillator Coarse and Fine Adjustment Location
FINE
ADJUST
10 MHz REFERENCE
INT EXT SELECT SWITCH
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HP 5384A Specifications

General

Brand	HP
Model	5384A
Category	Cash Counter
Language	English