HP Q METER 4342A - Page 59

Model 4342A
Table 5-6. Adjustable Components.
Section V
Table 5-6
Reference
Designator
I
Name of Control
I
Purpose
AlAlCl, -c3,
-c5, -C7,
-c9, -Cll,
-Cl3
FREQ. ADJ C To adjust oscillator frequency of upper range
limits of individual frequency ranges to
maximize frequency accuracies.
AlAlLl
thru
AlAlL
7
FREQ. ADJ L To adjust oscillator frequency of lower range
limits of individual frequency ranges to
maximize frequency accuracies.
HIGH FREQ. ADJ To adjust Q meter sensitivity in high frequency
(7OMHz) region to obtain optimum frequency
flatness.
ASR32
MED FREQ. ADJ To adjust Q meter sensitivity in high frequency
(2OMHz) region to obtain optimum frequency
flatness.
ASR43 LINEARITY ADJ To adjust Q meter linearity to maximize
measurement accuracy.
A6R2
A6R4
I::
A6R6
Xl GAIN To set Q meter full scale sensitivity to
maximize measurement accuracy.
REC BAL To set Q ANALOG OUTPUT dc voltage at rear
panel to zero volts at Q meter zero scale
deflection.
REC GAIN
To set Q ANALOG OUTPUT dc voltage at rear
panel (to 1 volt) at Q meter full scale
deflection.
A6R21 X10 GAIN To adjust AQ measurement full scale sensitivity
to maximize AQ measurement accuracy.
A7R3
Q-PRESET To properly set Q limit selector sensitivity at
Q LIMIT dial full scale setting to maximize the
dial scale accuracy.
A7R7 Q-PRESET
VERNIER
To properly set Q limit selector sensitivity at
Q LIMIT dial center scale setting to maximize
the dial scale accuracy.
A8R12
-RZl
+25V ADJ
-25V ADJ
To set +25V and -2SV output voltages of dc
power supply.
A8R26
I
OSC LEVEL
I
To adjust oscillator output voltage to maximize
measurement accuracy.
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