HP 209A - Output Voltage and Impedance Check (Sine Wave); Output Control Check (Sine Wave); Balance Check (Sine Wave); Output Voltage Check (Square Wave)

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