Features

 
Up and Down keys are used to adjust the directory and change the model number
The Left and right keys are used to move around the cursor and select the item you want to change Enter key is used to switch on/off and run the testing command
Open the battery covers, put in 2 AA batteries (1.5V), and then close the battery cover
Press the Enter key for more than 2 seconds to power on. When powered on, the system displays the current battery voltage automatically. When the battery power is low, please replace the batteries. Low voltage will affect the reliability of the test results and the machine will automatically shut down for protection.
How to switch on: press the Enter key for more than 2 seconds
How to switch off:
1.  Press the Enter key in the off directory, it will shut down immediately
2.  Press the Enter button in any directory exceeding 10 seconds then it will shut down
3.  After 60 seconds without any operation, it will shut down automatically Shortcuts: O-key for fast shutdown
• P-key, is the backlit key
74HC 74HC series logic devices testing (same with 74LS series. different driver circuit) (enter the model manually)
74LS 74LS series logic devices testing (same with 74HC series, different driver circuit) (enter the model manually)
74HC 74HC series logic devices testing (same with 74LS series. different driver circuit) (enter the model manually)
74LS 74LS series logic devices testing (same with 74HC series, different driver circuit) (enter the model manually)
CD 40 CD 4000 series logic devices testing (different from HEF40 series, the same driver circuit) (enter the model manually)
HEF40 HEF4000 series logic devices testing (different from CD 40 series, the same drive circuit) (enter the model manually)
45/145 45 series/ 145series logic devices testing (enter the model manually)
OTHER Interface driver device testing, such as max232, max485, 75175, 75176, 75cll (enter the model manually)
AMP Op-amp, compare device testing, such as LM324, LM358, LM339, LM393, LM2902 (enter the model manually)
TR Transistor identification: identify the transistor type and the order 'of pins automatically; identify the NPN, PNP, N-MOS, P-MOS, 1-SCR, 2-SCR, 2D (identify automatically without input)
ZD Zener diode voltage regulator testing, testing range: 0-5V, precision 0.01V (Identify automaticity without input)
LIGHT Optocoupler,such as:TLP521-1,PC817,PC923,4n25,HCNW4506,
BRT11\12\13, HCPL-3101