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WARNING
Disconnect power to all terminals before connecting or disconnecting calibration leads. Hazardous
voltage is present on the mains terminals and may be present on other terminals. More than one
switch may be required to de-energize the unit before servicing.
Failure to comply with these instructions could result in death or serious injury.
NOTICE
Time-stamp and description of successful calibrations are stored to disk in the Event file.
Step
1
Connect the meter to the output #1 terminals.
2
Select CALIBRATE ANALOG OUTPUTS.
Select OUTPUT #1 LOW. The menu will disappear and the meter will read approximately 4 mA
3
(CAT).
4
Use the Increment and Decrement buttons to adjust the meter reading to the exact low value 4 mA.
Press Enter when done.
5
Select OUTPUT #1 HIGH. The menu will disappear and the meter will read approximately 20 mA
(CAT).
6
Use the Increment or Decrement buttons to adjust the meter reading to the exact high value. Press
Enter when done.
7
Repeat steps 1-6 to calibrate other CAT outputs.
8
Press Menu to restore the main Maintenance menu.
8.6 Off-line Diagnostics
The following table describes the prompts.
Prompt
RAM SIZE (KB)
KEYBOARD TEST
DISPLAY TEST
DISK READ/WRITE TEST
Table 8-2 Calibrate Analog Output Procedure
Table 8-3 Offline Diagnostic Prompts
Shows amount of RAM found during power-up self-test. If less than 3072KB,
replace the CPU.
Select this to verify operation of each key. When each key is pressed, its name
should appear onscreen. An AT keyboard can also be tested if connected.
Select this then press Enter to test each display color: red, green, blue, white,
black. Any failed display pixels should be apparent.
Select this to verify read/write disk function.
Video Recorder – User Manual
Action
Function
Maintenance
247
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