Table of Contents
Section V
5-9. OUTPUT
VOLTAGE
AND
IMPEDANCE
CHECK (SINEWAVE).
a. Connect the Model 209A sine wave output
without a 600 ohm load to the AC
Voltmeter.
b. Set the AC Voltmeter to the 10V RANGE,
and the Model 209A sine wave amplitude to
maximum at a frequency setting of 20 kHz.
c. The meter should indicate at least 10 V rms.
d. Reduce the 209A output to 10 V rrns.
e. Connect a 600 ohm load to the Model 209A.
f. The AC Voltmeter should indicate 5 volts
rms,
verifying
the
output
voltage
specification and an approximate output
impedance of 600 ohms.
5-10. OUTPUT CONTROL CHECK (SINE WAVE).
a. Connect the Model 209A sine wave output
without a 600 ohm load to the AC
Voltmeter.
b. Adjust the Model 209A sine wave amplitude
to minimum.
c. The meter indication should be less than I
volt rms.
hp209A
OSCILLATOR
Model209A
5-11. BALANCE CHECK (SINE WAVE).
a. Connect the Model 209A sine wave output
with a 600 ohm load to the AC Voltmeter.
b. Set controls as follows:
Mode1209A:
Dial
2
RANGE
XIOK
AC Voltmeter:
RANGE
ODB
c. Adjust the Model 209A sine wave amplitude
for a meter indication of 0 dB.
d. Remove the 600 ohm load and connect the
equipment as shown in Figure 54.
e. Meter indication should be greater than 40
dB down from 0 dB reference.
5-12. OUTPUT
VOLTAGE
CHECK
(SQUARE
WAVE).
a. Set the Model 209A frequency to 20 kHz,
and the square wave amplitude to maximum.
b. Connect the Model 209A square wave
output
to the vertical input on the
oscilloscope, using a low capacitance 10: I
divider probe.
c. The square wave viewed on the oscilloscope
should have an amplitude of at least 20 volts
peak-to-peak.
AC VOLTMETER
hp
400E
@
~
@
v ( ; ( ;
BALANCE NETWORK
@
®
@@@
Hi)
, - - - - - - - - - - - - 1
l
:
I
I
I
I
3000
I
0.1%
I
I~
L_~g3~
___
1~::j.T
209A-e-166~
Figure 5-4. Balance Check
54
www.HPARCHIVE.com
Table of Contents
