HP 4328A Service Manual

Section V
Paragraphs 5-36 to 5-38
b. Put the Model16005A Probes or l6007A/B Test
Leads to the Model 4328A.
c. Connect the probes to Standard Decade Resis-
tance Box YEW Type 2786 or GR Model 1432T.
d. Adjust the Decade Resistor to provide 30!'2, and
adJust R232 so that the pointer mdicates 30n.
e. Adjust the Decade Resistor to provide lOOn,
and ad)ust R229 so that the Meter indication is
toon.
f. Set Decade Resistor to provide 10 to lOOn in
order and check the tracking tolerance of Model
4328A. It should be ±0. 500.
g. If the tracking is out of tolerance, repeat d, e,
and f.
5-36. FULL SCALE ADJUSTMENT
a. Attach the Model 16007A/B Test Leads to the
Model 4328A.
b. Connect the Test Leads to Standard Resistor of
0. 001 to 100n and check the full scale readings
of the Model 4328A.
c. The Meter Readings should be within ±0 .. 5'lQ of
full scale.
Model 4328A
d. If the readmgs are off, values of RlOl to Rll1
should slightly be changed for adJusting U1e full
scale.
5-37. RECORDER OUTPUT ADJUSTMENT
a. Set the Model 4328A Range Switch to lOOn and
connect the probes to 100!'2 Standard Resistor.
Check the full scale readmg of the ModeL 4328A.
b.
Adjust A2R233 for the recorder output to be
lOOmV de between terminals marked RECOR-
DER on the rear panel.
c. Repeat Paragraphs 5-35, 36 and 37.
5-38. REACTANCE COMPONENT OFFSET
ADJUSTMENT
a. Set the Model 4328A range to 1m!'2 and measure
an impedance of (R + jwL) as shown in Figure
5-2, where R should be calibrated by DC bridge
and the reactance value twice that of R.
b.. AdJust A2C208 as the error should come within
±1 o relative to the calibrated value. A2C207
is changed to different values when A2C208 is
out of range.
c Set the 4328A range to 3mn and check with
Standard Resistor. If necessary adjust A4R102*,
error should be within 1%.
TRANSISTOR BIASING
DEVICE
SYMBOL
CUT OFF
CONDUCTING
PLArE
+200V
+200V
VACUUM TUBE
GRID-$
-15V~
-JV~
CATHODE
COLLECTOR
+20V
+20V
BASE~
~MAIN
N P N TRANSISTOR
DV~
+.
3
V /CURRENT
(OR-) :-
CONTR
EMITTER
CURRENT -::-
COLLECTOR
-20V
-20V
~SE~
~MAIN
P N P TRANSISTOR
ov(>
-.
3
V YURRENT
(OR+) -=
CONTR
EMITTER
CURRENT -=
Figure 5-1. Transistor Biasing Characterlstlcs
5-4
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HP 4328A Specifications

General

Brand	HP
Model	4328A
Category	Measuring Instruments
Language	English