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HP 437B
Service Sheet BD1
eS
eR
Ree
Vit
ART TUN
=! INT HT AT TTT Ty
Set pla Yt
= L {MT
TITY) TI
Fe
ET Va
ile
Se PIE
1 ms/DIV
Figure 8-6. A4TP17
Variable Gain Amplifier Waveform
11.
Connect the oscilloscope to A4TP4.
Verify the signal shown in Figure
8-7. The signal level should be 1.8 times the voltage at A4TP17 p-p,
t0.8V.
1 ms/DIV
Figure 8-7. A4¢TP4 Bandpass Amplifier Waveform
12.
Connect the oscilloscope to A4TPS.
Verify the signal shown in Figure
8-8. The signal level should be 9 times the voltage at A4TP17 p-p,
+0.4V.
Retain the peak voltage reading for steps 13 and L5.
SERVICE
8-35
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