Agilent Technologies 54657A Specifikace Strana 134

  • Stažení
  • Přidat do mých příruček
  • Tisk
  • Strana
    / 188
  • Tabulka s obsahem
  • KNIHY
  • Hodnocené. / 5. Na základě hodnocení zákazníků
Zobrazit stránku 133
3 Perform the keyboard test.
a Press the Keyboard softkey.
A pictorial diagram of the front panel will appear on the display.
b Press each key, and notice that when you press a key a corresponding
block on the display fills in.
c Rotate the knobs (except the intensity) and notice that an arrow
appears on the display that points in the direction you rotate the knob.
d Do all the keys and knobs work?
If yes, Press
Stop two or three times (the display indicates how
many times), then go to step 3. If not, replace the keyboard and
keyboard assembly.
4
Check the output level of the DAC.
a Press the DAC softkey.
b Connect a multimeter to the rear panel CALIBRATOR connector.
The multimeter should read 0 V ±500 µV.
c Press any key to continue.
The multimeter should read 5 V ±10 mV.
d Are the DAC voltages correct?
If yes, press any key to continue. If not, replace the system board.
e Connect a test oscilloscope to the rear-panel CALIBRATOR connector.
f The test oscilloscope should measure :
Vp-p = 900 mV ± 150 mV
Vavg = –450 mV ± 75 mV
Freq = 2.46 kHz ± 100 Hz (54615B/16B)
2.08 kHz ± 100 Hz (54616C)
g Are these readings correct?
If yes, press any key to continue. If not, replace the system board.
Service
Troubleshooting the Oscilloscope
4–42
Zobrazit stránku 133
1 2 ... 129 130 131 132 133 134 135 136 137 138 139 ... 187 188

Komentáře k této Příručce

Žádné komentáře