Boonton 4530 Series, Руководство по обслуживанию и калибровке

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BOONTON ELECTRONICS a WIRELESS TELECOM GROUP COMPANY
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4) TESTING DSP BOARD POWER SUPPLY
a. Locate the DSP Board: large pc board on bottom of chassis
b. Verify the main supply voltages at the following testpoints:
TP2 =+5.00VDC +/-0.25V
TP3 = +15.00 VDC +/- 0.25V
TP4 = +5.00 VDC c +/-0.25V
TP5 = +2.50 VDC +/-0.25V
TP7 = -5.00 VDC +/-0.25V
TP8 = -15.00 VDC +/-0.25V
TP10 = +8.00 VDC +/-0.25V
TP11 = -8.00 VDC +/-0.25V
5) BASIC SYSTEM CHECK AND SETUP
a. Press ON/STBY key on front panel to return to “standby” mode, then after a few seconds press
again to turn back “on” while observing the display.
b. The display should show a start-up screen, the BOONTON logo, and then the main menu of the
4530.
c. Check that the fan is operating and that air flows freely through the fan and filter. The fan should
blow air OUT of instrument, not in. Clean the filter or fan guard if necessary.
d. Press and hold the ESC/Stop key while using the UP and DOWN keys to adjust the LCD contrast.
Contrast should change from full dark to full light. Adjust for best display when viewed from
directly in front of instrument.
e. From front panel controls, select Main Menu > Utilities > Backlight , and set to “OFF”. Verify
that LCD backlight turns off. Set back to “ON” and verify that backlight turns on.
f. From front panel controls, select Main Menu > Utilities > Key Beep , and set to “ON”. Verify that
pressing any key now causes a beep. Set to “OFF” and verify that the key beep is now disabled.
g. From front panel controls, select Main Menu > Utilities > Sys-Tests > Voltages . Verify that all
the voltages read correctly (no errors messages are displayed). The “Cal VDC = 0V” message is
normal, since the calibrator is off. ESC ends the test.
h. From front panel controls, select
Main Menu > Utilities > Sys-Tests >DispTest
. Observe the
display test and make sure that the fill and clear patterns appear correct and that the fonts are all
readable. ESC ends the test.
i. From front panel controls, select
Main Menu > Utilities > Sys-Tests > Keypad
. Press each key.
The corresponding key name on the display will go into reverse video. The ESC/Stop key ends
the test so use this key last.
j. From front panel controls, select Main Menu > Utilities > Sys-Tests > Recorder . Monitor the
“Recorder Out” BNC connector on the rear panel using an oscilloscope to verify that the following
waveform is present. Voltages should be within 500mV of values shown, and waveform should
have no large steps or discontinuities. ESC ends the test.
Scans by Artekmedia => 2009