The Tektronix 178 user manual provides detailed instructions for setting up and operating the 178 Linear IC Test Fixture, which is used with the 577-D1 or 577-D2 Curve Tracer Systems to measure parameters of various electronic components such as operational amplifiers and comparators. It also includes troubleshooting guidance, covering the use of device cards, function switch operations, and the adjustment of power supplies, along with appendices for testing specific components like the LM324 and 741 operational amplifiers.
Overview
The 178 Linear IC Test Fixture is a plug-in device designed for use with the 577-D1 or 577-D2 Curve Tracer Systems. It is used to measure parameters of operational amplifiers, comparators, differential amplifiers, and regulators. The fixture includes a sweep generator, power supplies, part of the vertical measuring system, a feedback loop for the device under test, and switching capabilities for various testing conditions. The sweep generator provides a sinusoidal output with a frequency range from 0.01 Hz to 1 kHz. The fixture also features adjustable DC voltage levels for both positive and negative supplies, with a maximum current capability that can be limited by potentiometers. The vertical measurement system can measure either voltage or current, with a FUNCTION selector switch providing 11 test positions.
Specifications
- Vertical Deflection Factors: Input Current (In 50 pA/div to .2 mA/div in a 1-2-5 sequence unmagnified, +Input | and —Input 5 pA/div to 20 wA/div with 10X magnifier on.
- Accuracy: Within +3% £50 pA, unmagnified. Within +4% +50 pA with 10X magnifier on.
- Voltage: 10 pV/div to 50 mV/div in a 1-2-5 sequence, unmagnified. 1 wV/div to 5 mV/div with 10X magnifier on.
- GAIN and OFFSET V Functions Accuracy: Within +3%, unmagnified; +4% with 10X magnifier on.
- CMRR Function Accuracy: Within £3% + 200K% 4 150 yyy… Gain ~K K Within £4% + 100K »% + 150 wv. Gain —K K with 10X magnifier on (1 uV/div to 5 uV/div).
- PSRR Function Accuracy: Within £3% + 100K 9, Gain —K Within +4% + 100 Ka with 10x Gain —K magnifier on (1 uV/div to 5 uV/div).
- Power Supply Current: 1 nA/div to 50 mA/div in a 1-2-5 sequence, unmagnified. 0.1 nA/div to 5 mA/div with 10X magnifier on.
- Current Mode Accuracy: Within £3% +1 nA unmagnified; +4% +1 nA with 10X magnifier on.
- Collector Supply Current: 1 nA/div to 50 mA/div in a 1-2-5 sequence, unmagni~ fied . 0.1 nA/div to 5 mA/div with 10X magnifier on.
- Current Mode Accuracy: Within £3% -£1 nA, unmagnified. £4% +1 nA with 10X magnifier on.
- Positive and Negative Supplies: Both supplies can be adjusted from the +SUPPLY control. Negative supply can be independently adjusted using the uncalibrated SUPPLY control.
- Voltage: Adjustable from 0 to 30 V.
- Accuracy: Within £2% +100 mV. The —SUPPLY voltage is within +1% (absolute) of the +SUPPLY voltage when the —SUPPLY control is in the TRACK +SUPPLY position.
- Current: At least 150 mA Adjustable current limiting.
- Sweep Generator Frequency: 0.1 Hz to 1 kH
Controls & Indicators
Refer to the PDF for details.
Installation / Setup
Refer to the PDF for details.
Operation
Refer to the PDF for details.
Troubleshooting & Error Codes
Refer to the PDF for details.
Safety & Warnings
Refer to the PDF for details.
Download MANUAL Manual (PDF – 13.0 MB)
Tektronix-178-user MANUAL PDF: Guide for technicians to troubleshoot and calibrate Tektronix-178 equipment. File size: 13.0 MB.
- Brand: Tektronix-178-user
- Model: MANUAL
- Type: User manual
- File size: 13.0 MB
Overview
Brief overview of the product.
Specifications
- Key spec 1
- Key spec 2
Controls & Indicators
Control panel/button layout.
Installation / Setup
- Step 1…
- Step 2…
Operation
Basic usage, modes, cycles.
Troubleshooting & Error Codes
| Issue / Code | Fix |
|---|---|
| Example | How to fix… |
Safety & Warnings
- Important warning…
Downloads
Download MANUAL user manual (PDF)
Tektronix-178 User Manual Overview
The Tektronix-178 is a versatile analog oscilloscope designed for precise signal measurement and waveform analysis. Widely used in electronics testing, repair, and research, this device provides clear visual representation of electrical signals, making it an essential tool for engineers, technicians, and hobbyists alike. The Tektronix-178 offers reliable performance with a user-friendly interface, enabling accurate diagnostics and troubleshooting of electronic circuits.
Main Features and Specifications
- Bandwidth: 100 MHz
- Input Channels: 2
- Vertical Sensitivity: 2 mV/div to 5 V/div
- Time Base Range: 5 ns/div to 0.5 s/div
- Trigger Modes: Auto, Normal, and Single Sweep
- CRT Display with Intensity and Focus Controls
- Input Impedance: 1 MΩ ±2%
- Power Supply: 100-240V AC, 50/60 Hz
Basic Usage and Operation Tips
To begin using the Tektronix-178, connect the probe to the input channel and attach it to the test circuit. Adjust the vertical sensitivity and time base controls to properly scale the waveform on the display. Use the trigger controls to stabilize repetitive signals for clear observation. For best results, calibrate the oscilloscope periodically using the built-in calibration signal. Always start with higher voltage and slower time base settings, then fine-tune for detailed analysis.
Troubleshooting and Maintenance
If the display is dim or distorted, check the intensity and focus knobs for proper adjustment. Ensure the probe and input connectors are securely attached and free of damage. In case of erratic triggering, verify the trigger settings and try switching between trigger modes. Regularly clean the exterior and screen with a soft, dry cloth. Avoid exposure to excessive dust, moisture, or extreme temperatures to prolong device lifespan. For internal issues, consult authorized service personnel.
Safety Reminder
Always observe electrical safety precautions when operating the Tektronix-178. Avoid contact with live circuits and use properly rated probes and accessories. Disconnect power before performing any maintenance or internal inspection. Follow all local regulations and guidelines to ensure safe and effective use of the oscilloscope.