6
7. Vacuum degree display: used to display the true value of the detected vacuum degree.
(The reading is taken by scientific notation)
8. Pa (vacuum) light: used to indicate the current reading type and unit
9. A (current) light: used to indicate the current reading type and unit. For details, see
3.3.4 Operating Instructions.
10. High-voltage selector switch: used to select the high-voltage level required for
measurement. The tube type to be tested is the high-end selected above 10KV. Choose
low gear below 10KV.
11. Magnetron voltage: used to indicate the voltage of the magnetron coil.
12. Key: the selection key is used to select the tube type, and the light of the selection
key is on to be effective; after the tube type is selected, the light of the selection key is
off to be selected.
Up and down keys: used to scroll up and down to select the desired tube type.
Print key: After the measurement is over, print out the measured data. The print button
light is on and effective.
Check key: If there is no alternative parameter, you can use the check key. This can
directly produce ionization current. Generally speaking, the ionization current (A) is
about two orders of magnitude smaller than the vacuum degree (Pa).
Measurement key: After the tube type is selected, the measurement key light is on to
indicate the start of measurement.
Reset button: used to reset the whole machine after measurement. Press
【
Reset key
】
,
the instrument returns to the initial state. If selected during measurement
If the selection is wrong, you can press [Reset Key] at any time to re-select.
13. Printer: used to print test data. The S/L key is the paper feed and eject key; the POW
is the power indicator. After the printing paper is used up, press the buckles on both
sides of the upper cover, open the upper cover, take out the paper roll, and load new
paper.
14. Connect to the earth: used to connect with the earth to reduce the influence of static
electricity.
