6.9 Calibration Procedures
The following section includes the manual adjustments that can be made in the
WaveSurfer system.
6.9.1 System Power Supply Calibration Procedure
.............................. CAUTION: Risk of electric shock
• Measure the power supply voltages as shown in the table below. If any are
found to be outside of their specifications proceed with the remainder of this
procedure to adjust them.
• To adjust the power supply output voltages, the unit will need slight
disassembly. The front panel and hard drive assy will need to be dismounted
and the power supply unscrewed and reversed inside out so the printed circuit
assy is facing outward.
• The system should not be operated for more than 10 minutes outside of the unit
powered up without forced air passing through the power supply and acquisition
assembly.
• After reversing the power supply in the unit, plug AC power into the rear panel
AC receptacle.
• Turn on using the front panel power switch. Measure each voltage as shown in
the table below and adjust the potentiometers accessible through the top cover
as shown until each voltage is within its specified range.
The following table lists the nominal, min and max voltages for the outputs from the main
power supply. Verify them at the locations listed.
Nominal Output
Voltage (Vset)
Tolerance Min
(V)
Max
(V)
Measurement Location
+3.3 V 5% 3.14 3.47 CN6 pin 1
+5 V
DIG
5% 4.75 5.25 CN6 pin 4
+5 V
A
1.5% 4.93 5.08 CN2 pin 1
-5 V 1.5% -4.93 -5.08 CN2 pin 4
+2.5 V 5% 2.38 2.63 CN2 pin 8
+12 V 2% 11.76 12.24 CN3 pin 1
+9 V 2% 8.82 9.18 CN3 pin 3
-12 V 2% -12.24 -11.76 CN3 pin 5
Maintenance 6-33
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