Front Panel Description - Extech Instruments 382280 User Manual

Front Panel Description

1. OPER/STBY: Operation/Standby button. Press to enable/disable the output. When the
supply is in the STANDBY mode the output is 0 volts.
2. RECALL: Press to call up stored output sets or to activate Automatic Test Sequencing.
3. STORE: Press to save the present V/A output set to memory. Use the numeric keys (not
the arrows) to select a storage location from 000 to 199 and then press ENTER.
4. SEC (Seconds): Press to enter time in seconds. Use the ENTER key to confirm entries.
5. V/A: Press to toggle between voltage (V) and current (A) on the display.
6. OCP (Over-Current Protection): Press to enable/disable OCP.
7. OVP (Over Voltage Protection): Press to program the OVP value (defaults to 40V).
8. Numeric keypad and period button.
9. ENTER: Press to confirm entries.
10. ▼ (DOWN Arrow): Press to decrease a programming value.
11. ▲ (UP Arrow): Press to increase a programming value.
12. (RIGHT Arrow): Press to move the cursor to a new location in a row.
13. POWER ON/OFF: Press to turn the supply on or off.
14. Rubber feet.
15. Dot matrix display.
16. GND: Ground terminal (connected to the chassis of the unit).
17. COM: Common terminal for the 5V and the 3.3V output.
18. 3.3V/3A: Positive terminal for the 3.3V output. If more than 3A is drawn, the output will
be lower than the 3.3V specified.
19. 5V/2A: Positive terminal for the 5V output. If more than 2A is drawn, the output will be
lower than the 5V specified.
20. Positive Terminal for the 40VDC / 5ADC output. This terminal is physically connected to
terminal 22. Use terminal 21 (not COM) as the negative terminal for best accuracy. Note
that terminal 21, 23, and COM are connected.
21. Negative terminal for 40VDC / 5ADC (terminal 20) output.
22. Positive Terminal for the 40VDC / 5ADC output. This terminal is physically connected to
terminal 20. Use terminal 23 (not COM) as the negative terminal for best accuracy.
23. Negative terminal for 40VDC / 5ADC (terminal 22) output.
24. CE (Cancel Entry): Press to cancel a programming entry.
3 Version 1.5 9/02