HP 8112A Operating, Programming And Servicing Manual page 16

Contents-10
TIME Mode . . . . . . . . . . . . . . . .
outputs . . . . . . . . . . . . . . . . . .
Error Output
Period, Delay and Width Generation
Period Generator . . . . . . . . . . . . . .
Delay Generator . . . . . . . . . . . . . .
Width Generator . . . . . . . . . . . . . .
Slope Generation . . . . . . . . . . . . . . .
Fixed Transition . . . . . . . . . . . . . .
Linear and Gaussian Transitions
Current Sources
Range Switches
Reference Circuit . . . . . . . . . . . . . .
Error Feedback . . . . . . . . . . . . . . . .
Troubleshooting
Address Decoder . . . . . . . . . . . . . . .
Control Mode Selection . . . . . . . . . . . .
Period Generator . . . . . . . . . . . . . . .
Delay Generator
Width Generator . . . . . . . . . . . . . . .
Slope Generator
Range Decoder . . . . . . . . . . . . . . .
Example
10.4. Servicing the Shaper and Output Amplifier
Theory of Operation
Introduction
Bus Latch . . . . . . . . . . . . . . . . . .
Shaper IC . . . . . . . . . . . . . . . . . .
Wave Forming . . . . . . . . . . . . . . .
Output Mode
Shaper Output . . . . . . . . . . . . . . .
Current Mirror . . . . . . . . . . . . . . . .
Pre-Attenuator
Signal Output Amplifier . . . . . . . . . . . .
Input . . . . . . . . . . . . . . . . . . .
Voltage gain . . . . . . . . . . . . . . . .
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output
Trigger Output Amplifier
Level Check Circuit . . . . . . . . . . . . . .
Troubleshooting
Shaper IC Inputs . . . . . . . . . . . . . . .
Transition Mode and Output Control Signals
Shaper IC Amplitude-vernier Control-voltage . .
Shaper IC Reference Current . . . . . . . . . .
Shaper IC Current-mirror . . . . . . . . . . .
Pre-Attenuator
Signals . . . . . . . . . . . . . . . . . .
Offset-vernier
Output Amplifier . . . . . . . . . . . . . . .
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and Output Attenuator
Control-voltage . . . . . . . . .
10.3-4
10.3-5
10.3-5
. . . . . . 10.3-5
10.3-5
10.3-6
10.3-6
10.3-7
10.3-7
10.3-7
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10.3-8
10.3-8
10.3-8
10.3-8
10.3-14
10.3-15
10.3-16
10.3-18
10.3-19
10.3-21
10.3-22
10.3-22
10.4-l
10.4-l
10.4-l
10.4-l
10.4-2
10.4-3
10.4-3
10.4-3
10.4-4
10.4-4
10.4-5
10.4-6
10.4-6
10.4-6
10.4-6
10.4-11
10.4-11
. . 10.4-13
10.4-13
10.4-13
10.4-13
Control
10.4-13
10.4-14
10.4-14