ADInstruments AD2400 Manual De Usuario página 17

_______________________________________________________________________________
Fig 1.0
1. crystal oscillator key
3. step key
5. reset key
7. crystal oscillator indicator
9. KHz indicator
11.counting indicator
13.CH.B terminal (10Hz-50MHz)
15. power switch
AD-2400
17. Power jack
19. Case
(1) input terminal: CH.A and CH.B are on the left of panel.
The input terminal on the top and left of the panel is CH.A, at the bottom one is
CH.B.
Crystal oscillator plug-board is on the bottom and left of the panel.
(2) keys
crystal oscillator key: when measuring, insert the crystal oscillator under into
the play-board, and press the key simultaneously. After measuring press the key
one again to stop.
gate key: It is for setting different counting period on measurement, it is has 4
gate time, i,e . 0.1s, 1s, 5s, 10s.
step key : 5 steps
No.1 50MHz-2400MHz range. CH.A "MHz" displays
No.2 4MHz-50MHz range.
No.3 10Hz-4MHz range.
The above 3 steps are for frequency measurement, "frequency" indicator lights
No.4 progressive counting measurement, input from CH.B "counting indicator
lights .
No.5 crystal measurement, input from CH.C (I.e., crystal oscillator
plug-board ), "crystal oscillator indicator lights, KHz displays.
After select gate, step and pressing confirm key, the frequency counter begins to
work, every time, when power on or press "RESET" key, the instrument enters
into the previous working mode automatically .
"return" key: when the instrument is in off normal mode ,press it and return to
©Copyright Abacanto Digital SA.
2. gate key
4. confirm key
6. Crystal oscillator playboard
8. MHz indicator
10. LED display
12. frequency indicator
14.CH.A terminal (50MHz-2.4GHz)
16. fuse socket
18. warning
CH.B "MHz" displays
CH.B "KHz" displays
Manual de usuario AD2400
AD Instruments
Fig 1.1
17