Feature Description:
After turning on the power, the instrument has the following reaction:
* There is a high single prompt
* Four LED light-emitting diodes are all bright
* After one second, the display is off, three LEDs are off, and only the 5V power indicator is on
* The instrument enters the self-test state
* Self test is normal, there are two high pitches, the display shows: PLEASE
* Self-test failure, there are two bass tips, the display shows: 1 - numerical or 2 - numerical
Note: When the power is turned on, there is no integrated block on the locking socket.

Technical Parameters:
1. Operating system: 16-position touch-sensitive stereo keyboard dual-tone prompt system, the device under test is installed with a locking socket.
2. Display System: The six-digit display shows the model number of the device under test or various function prompts. Four LEDs show the working status of the instrument.
3. Supply voltage: 220V or 110V
4. Total power consumption: 12VA
5. Applicable temperature: 0°C--+40°C
6. Working hours: Work for 1 hour, power outage for 5 minutes. If continuous operation, the power supply voltage ∠ 230V, the ambient temperature ∠ 25 °C.
7. Instrument Structure: Desktop Plastic Case
8. Size: 292*235*75 cubic centimeters
9. Weight: 4.0KG

Instructions for use:
1. The device is good or bad to distinguish: When unknown device is good or bad, just enter the device model, and put the device
At the corresponding working socket, the instrument can determine the quality of the device.
2. Device Type Identification: When the model of the device under test is unknown, simply input the pin number of the device and it will be
The test device is placed on the corresponding working socket and the instrument can immediately identify the model of the device.
3. Device Substitution Query: Enter the part number of the device to be queried and press the “substitution query” key to know if there are other devices with the same logic function.
4. Dynamic aging of the device: When you suspect the dynamic stability of the device under test, just enter the device model, and put the device under test on the corresponding locking socket, press the "dynamic aging" button, the instrument can be on the device Perform dynamic aging and continuous testing.

Application area:
YBD868 type digital integrated circuit tester takes the advanced microprocessor as the core, the main device selects the integrated circuit produced by well-known device companies such as INTEL, MOTOROLA, etc., cooperates with software and peripheral expansion system to comprehensively simulate the integrated function of the device under test, and is suitable for almost All digital integrated circuits with a fixed output. Widely used for maintenance, testing all types of computers, industrial automation equipment, large-scale medical equipment, CNC machine tools, computer peripherals, program-controlled switches, electronic instrumentation, digital communications equipment, electronic relay protection devices and various types of electronic products.

Can use to test over 2000 kinds of IC：
1.TTL54 series
2.TTL55 series
3.TTL74 series
4.TTL75 series
5.CMOS14 series
6.CMOS40 series
7.CMOS45 series
8.optical coupler series
9.LED display series
10.RAM series
11.SCM series
12.CPU peripheral series