HP 5501B Operating And Service Manual page 113

①
A3TP11 or A1TP3. HEATER SENSE During Warmup
Mode
Oscilloscope Settings:
Vertical Input: 5 Volts/Division
Horizontal Input: 10 μsec/Division
③
A3TP11 or A1TP3. HEATER SENSE During Optical
(Locked) Mode
Oscilloscope Settings:
Vertical Input: 5 Volts/Division
Horizontal Input: 10 μsec/Division
+15 VOLTS
-≈
0 VOLTS
-
-15 VOLTS
-≈
Waveform photographs
taken with all test
jumpers in the NRM (left-
most) position.
10:1 Probe Attenuation
not considered when
establishing vertical
channel input settings.
- +4 VOLTS
≈
0 VOLTS
-
②
A3TP11 or A1TP3. HEATER SENSE During Optical
(Locking) Mode
Oscilloscope Settings:
Vertical Input: 5 Volts/Division
Horizontal Input: 10 μsec/Division
④
A3U20 (Pin 3). U20's Internal Oscillator Output
Waveform (~50 kHz)
Oscilloscope Settings:
Vertical Input: 2 Volts/Division
Horizontal Input: 10 μsec/Division
HP5501B
Service
+15 VOLTS
-≈
0 VOLTS
-
-15 VOLTS
-≈
+4 VOLTS
-≈
0 VOLTS
-
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