HP 3300A User Manual

Model 3300A Section V
SECTION V
MAINTENANCE
5-1. INTRODUCTION.
5-2. This section contains information necessary for
the proper maintenance of the -hp- Model 3300A
Function Generator. The required test equipment is
listed in Table 5-1. Test equipment with comparable
characteristics can be substituted if recommended
equipment is not available.
5-3. PERFORMANCE CHECKS.
5-4. The performance checks are front panel
procedures designed to compare the -hp- Model 3300A
with its specifications. (See Table 1-1). These checks
may be accomplished with either the 3301A Auxiliary
Plug-in or Malfunction Isolating Aid Plug (see Figure 5-7)
installed in the 3300A. These operations should be
completed before any attempt is made to adjust or
calibrate the instrument. Allow a 30 minute warm-up
period before making performance checks. If a
performance check indicates that the instrument does
not meet specifications refer to the applicable paragraph
in the Adjustment and Calibration procedure contained in
this Section. (See Table 5-5).
5-5. DIAL ACCURACY.
a. Test equipment required: Frequency
Counter (-hp- Model 5245L).
b. Connect CHANNEL A OUTPUT to the
frequency counter and set the 3300A
control as follows:
CHANNEL A function switch .........SINE
CHANNEL A AMPLITUDE ............mid
position
c. Check frequency with dial at 1 and 10 for
each position of RANGE switch.
d. Accuracy should be * 1% of maximum dial
setting (one minor division) on X. 01
through X1K ranges, and ± 2% of
maximum dial setting (two minor divisions)
on X10K range.
5-6. Since the specification gives % of maximum dial
setting (full scale, the accuracy will always be + 1 or 2
minor divisions at any point on the dial.
5-7. DISTORTION CHECK.
a. Test equipment required: Distortion
Analyzer (-hp- Model 331A).
b. Connect the OUTPUT of CHANNEL A to
distortion analyzer and set 3300A controls
as follows:
FREQUENCY dial ......................10
RANGE switch............................X1K
CHANNEL A function switch ......SINE
CHANNEL A AMPLITUDE
control.................................mid position
c. Distortion should be less than 1%.
d. Position the RANGE switch to X10K.
Distortion should be less than 3%.
NOTE
The sine function is electronically
synthesized from the triangle
function. Satisfactory performance of
Distortion Check assures symmetry
and triangle linearity.
5-8. FREQUENCY RESPONSE:
5-9. Test equipment required: Oscilloscope (-hp-
Model 175/1750B).
a. Set up convenient reference level on
oscilloscope at 1 kHz.
b. Vary frequency over the entire range except
X10K. Amplitude should vary < ± 1%.
c. Vary frequency over the X10K range.
Amplitude should vary < + 3%.
5-10. MAXIMUM OUTPUT LEVEL, NO LOAD.
a. Test equipment required: Oscilloscope (-hp-
Model 175A/1750B).
b. Connect the OUTPUT of CHANNEL A to
Oscilloscope and set 3300A controls as
follows:
CHANNEL A function switch......SQUARE
CHANNEL A AMPLITUDE.........Max. CW
c. The peak-to peak voltage should be > 35
volts over entire frequency range.
5-11. Repeat 5-10 above with CHANNEL A function
switch set to SINE and TRIANGLE. The minimum peak-
to-peak voltage should remain 35 volts.
5-12. Repeat 5-10 and 5-11 on CHANNEL B.
5-13. MAXIMUM OUTPUT LEVEL, LOADED.
a. Test equipment required: Oscilloscope (-hp-
Model 175A/1750B), 600 ohm, and 50 ohm
resistor, see Table 5-1.
b. Connect OUTPUT of CHANNEL A and 600
ohm resistor as shown in Figure 5-1. Set
the 3300A controls as follows:
FREQUENCY dial...................10
RANGE switch ........................X100
CHANNEL A AMPLITUDE......
control .............................Max. CW
CHANNEL A function switch...SQUARE
c. Peak-to-peak voltage should be > 15 volts.
5-1

HP 3300A Specifications

General

Brand	HP
Model	3300A
Category	Inverter
Language	English