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Section V
ure 5 -3B. Set the oscillator frequency to 1 MHz.
k. Adjust the oscillator output for 10 V at the 467A
output, using the ac voltmeter. Then connect
the ac voltmeter to the filter output and the
reading should be less than O. 3 V. The oscil
lator must have less than 1% distortion for
this check.
5-12. DC POWER SUPPLY OPERATION.
5-13. DC VOLTAGE AND CURRENT CHECK.
a. A DC Voltmeter (-hp- Model 3440A/3444A)
and a 40 ohm ± 5%, 10 watt resistor (-hp
Part No. 0815-0028) will be required.
b. Place the 40 ohm resistor across the Model
467A OUTPUT.
c. Connect the dc voltmeter across the 40 ohm
resistor. Set FUNCTION to VOLTS; RANGE
to 1000 mV.
d.
Set Model 467A to SUPPLY ±1; VOLTS ADJ
fully CCW.
e. DC Voltmeter should read greater than -1000
mV.
f.
Rotate VOLTS ADJ fully CW. DC Voltmeter
should increase from -1. 000 to +1. 000 V or
more.
g. Repeat the above using settings listed in
Table 5-4.
Dc voltmeter should indicate
voltage variations as listed.
h. In the final step, an output current of 0.5 A
will be verified when the ±20 V is obtained
across the 40 ohm load resistor.
5-14. LOAD REGULATION CHECK.
a.
A DC Voltmeter ( -hp - Model 3440A/3444A) and
a 2 ohm ±1%, 1/2 watt resistor (-hp- P art No.
0727 -0445) will be requiredJor this operation.
b. Connect DC Voltmeter to Model 467A OUTPUT.
Set voltmeter FUNCTION to VOLTS; RANGE
to 10 V.
Set Model 467A to SUPPLY ± 1; VOLTS ADJ
c.
fully CW.
d.
DC Voltmeter should read greater than +1. 000
V.
Note and record reading.
e. Turn Model 467A LINE to OFF. Connect 2
ohm load resistor across Model 467 A OUTPUT.
Leave DC Voltmeter connected as in step b.
Model 467A
Supply
Rotate from Fully
1
2
4
10
20
Table 5 -4. DC Power Supply Operation
Volts Adj
Range
CCW to CW
1000 mV
CW to CCW
CCW to CW
CW to CCW
100 V
CCW to CW
f.
Turn Mode1467A LINE ON. DC Voltmeter read
ing should remain within 10 mV of reading ob
tained in d above. The load is from 0 to O. 5 A.
5-15. LINE REGULATION CHECK.
a. A DC Voltmeter (-hp- Model 3440A/3444A)
and a Variable Voltage Line Transforme r
(Superior Electric Company , Type UC1M) will
be required for this operation.
b. Connect the DC Voltmeter to the Model 467A
OUTPUT. Set FUNCTION to VOLTS; RANGE
to 10 V.
c. Set Model 467A to SUPPLY ±1; VOLTS AID
fully CCW. DC Voltmeter should read greater
than -1. 0 0. Note and record reading.
d.
Connect variable voltage line transformer
between Model 467 A power plug and line power
source.
e.
Adjust line transformer for 126.5 V output.
DC Voltmeter reading should remain within
10 mV of reading obtained in c above.
f.
Reset line transformer for 103. 5 V output.
DC Voltmeter readiRg should remain within
10 mV of reading obtained in c above.
5-16. OUTPUT IMPEDANCE CHECK.
a.
Figure 5-4 describes the test arrangement
recommended. ,An AC Voltmeter ( -hp - Model
331A) , a Test bscillator (-hp- Model 651B) ,
and a 12 ohm ± 1%, 1/2 watt resistor (-hp
Part No. 0811-0297) will be required.
b. Connect the Model 467A as shown in Figure 5-4.
c. Short Model 467A front panel INPUT; set to
AMPLIFIER X10.
d. Adjust oscillator' for 1. 0 V rms, 500 KHz
output. Verify output using AC Voltmeter.
e;
Voltage across 12 ohm resistor should be 0.8
V or greater.
output impedance is 3 ohms or less where
E
OSC
=
5-17. CAPACITIVE LOAD CHECK.
a. An Oscilloscope ( -hp - Model 175A) and 0.01
J.L F ± 10%, 200 V capacitor (-hp- Part No.
0160-0304) will be required for this test.
b. Set Model 467A to SUPPLY ± 20; VOLTS ADJ
fully CW.
Model 3440A/3444A DC Voltmeter
Function
VOLTS
10 V
VOLTS
10 V
VOLTS
10 V
VOLTS
VOLTS
5-4
Model 467A
At 500 KHz,
Model 467 A
E
+E
12 ohms
467·
Reading
(minimum designated)
- 1. 000 to + 1. 000 V
+ 2. 000 to - 2. 000 V
- 4. 000 to + 4. 000 V
+10.00
to -10.00
-20. 00
to +20.00
,
V
V
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Table of Contents
Troubleshooting
