EasyManua.ls Logo

Hitachi V-212 - Service Manual

Hitachi V-212
44 pages
Print Icon
To Next Page IconTo Next Page
To Next Page IconTo Next Page
Loading...

Other manuals for Hitachi V-212

Question and Answer IconNeed help?

Do you have a question about the Hitachi V-212 and is the answer not in the manual?

Summary

Specifications

Accessories

Preventive maintenance

Disassembly

Remove all screws on top and bottom covers to access internal parts.

Cleaning

Clean instrument covers and interior using soft cloth, brush, or air stream.

Visual inspection

Check for broken connections, loose transistors, damaged boards, or heat damage.

Calibration

Calibration interval

Perform calibration every 1000 hours of operation or six months if used infrequently.

Test equipment required

Lists necessary test equipment and accessories for accurate calibration.

Preliminary procedure

Calibrate at ambient temperature, connect to AC line, set controls, warmup.

Preliminary control settings

Sets instrument controls for calibration, covering FOCUS, TRACE ROTATION, VERT, HORZ, etc.

Initial starting procedure

Steps to power on, warm up CRT, adjust intensity, focus, and position for trace.

Semiconductor lead configurations

Circuit description

Channels 1 and 2 Vertical Preamp

Controls input coupling, deflection factor, DC balance, position, and gain for vertical signals.

Vertical Switching Circuit

Determines which vertical preamp signals are sent to the output amplifier.

Vertical Output Amplifier

Provides final amplification for vertical signals to the CRT deflection plates.

Trigger Preamp

Amplifies internal trigger signals for the Trigger Generator circuit.

Trigger Generator

Produces trigger pulses to start the Sweep Generator circuit.

Sweep Generator

Generates sawtooth voltage for horizontal deflection and unblanking gate.

Horizontal Amplifier

Provides output to CRT horizontal plates, includes magnifier and positioning.

Power Supply

Provides operating power, regulated supplies, and voltage selection.

Calibrator

Produces a square-wave output for amplitude and frequency calibration.

Z Axis Amplifier

Controls CRT intensity level by increasing or decreasing trace brightness.

CRT Circuit

Provides high-voltage and control circuits for the cathode-ray tube operation.

Electrical parts list

1 INPUT AMP

Lists parts for the CH1 and CH2 input amplifier sections.

CH1 PREAMP

Lists components for the CH1 Preamp section.

TRIG PREAMP

Lists components for the Trigger Preamp section.

SWEEP GEN

Lists components for the Sweep Generator section.

H AMP

Lists components for the Horizontal Amplifier section.

Schematic diagrams

Summary

Specifications

Accessories

Preventive maintenance

Disassembly

Remove all screws on top and bottom covers to access internal parts.

Cleaning

Clean instrument covers and interior using soft cloth, brush, or air stream.

Visual inspection

Check for broken connections, loose transistors, damaged boards, or heat damage.

Calibration

Calibration interval

Perform calibration every 1000 hours of operation or six months if used infrequently.

Test equipment required

Lists necessary test equipment and accessories for accurate calibration.

Preliminary procedure

Calibrate at ambient temperature, connect to AC line, set controls, warmup.

Preliminary control settings

Sets instrument controls for calibration, covering FOCUS, TRACE ROTATION, VERT, HORZ, etc.

Initial starting procedure

Steps to power on, warm up CRT, adjust intensity, focus, and position for trace.

Semiconductor lead configurations

Circuit description

Channels 1 and 2 Vertical Preamp

Controls input coupling, deflection factor, DC balance, position, and gain for vertical signals.

Vertical Switching Circuit

Determines which vertical preamp signals are sent to the output amplifier.

Vertical Output Amplifier

Provides final amplification for vertical signals to the CRT deflection plates.

Trigger Preamp

Amplifies internal trigger signals for the Trigger Generator circuit.

Trigger Generator

Produces trigger pulses to start the Sweep Generator circuit.

Sweep Generator

Generates sawtooth voltage for horizontal deflection and unblanking gate.

Horizontal Amplifier

Provides output to CRT horizontal plates, includes magnifier and positioning.

Power Supply

Provides operating power, regulated supplies, and voltage selection.

Calibrator

Produces a square-wave output for amplitude and frequency calibration.

Z Axis Amplifier

Controls CRT intensity level by increasing or decreasing trace brightness.

CRT Circuit

Provides high-voltage and control circuits for the cathode-ray tube operation.

Electrical parts list

1 INPUT AMP

Lists parts for the CH1 and CH2 input amplifier sections.

CH1 PREAMP

Lists components for the CH1 Preamp section.

TRIG PREAMP

Lists components for the Trigger Preamp section.

SWEEP GEN

Lists components for the Sweep Generator section.

H AMP

Lists components for the Horizontal Amplifier section.

Schematic diagrams

Hitachi V-212 Specifications

General IconGeneral
TypeAnalog Oscilloscope
Bandwidth20 MHz
Channels2
Input Sensitivity5 mV/div to 5 V/div
Trigger SourceCH1, CH2, Line, EXT
Input CouplingAC, DC, GND
Max Input Voltage400 V (DC+AC peak)
CRT Size6 inches
Time Base0.2 μs/div to 0.5 s/div
Trigger ModesAuto, Normal
Input Impedance1 MΩ // 25 pF
CRT TypeRectangular
Power Source100, 120, 220, 240 VAC; 50/60 Hz
Weight7.5 kg

Related product manuals