Precision Digital PD6400 - Manual (Page 94)

Model PD6400 High Voltage & Current Meter Instruction Manual
94
Troubleshooting Tips
Symptom Check/Action
No display at all Check power at power connector
Not able to change setup or
programming, Locd is displayed Meter is password-protected, enter
correct six-digit password to unlock
Meter displays error message
during calibration (Error) Check:
1.
Signal connections
2. Input selected in Setup menu
3. Minimum input span requirements
Meter displays
1.
999999
2. -99999
Check:
1.
Input selected in Setup menu
2. Corresponding signal at Signal
connector
Display is unstable Check:
1.
Input signal stability and value
2. Display scaling vs. input signal
3. Filter and bypass values (increase)
Display response is too slow Check filter and bypass values
Display reading is not accurate Check:
1.
Signal input conditioner selected:
Linear, square root, etc.
2. Scaling or calibration
Display does not respond to input
changes, reading a fixed number Check:
1.
Display assignment, it might be
displaying max, min, or set point.
Display alternates between
1. Hi and a number
2. Lo and a number
Press Menu to exit max/min display
readings.
Relay operation is reversed Check:
1.
Fail-safe in Setup menu
2. Wiring of relay contacts
Relay and status LED do not
respond to signal Check:
1.
Relay action in Setup menu
2. Set and reset points
Flashing relay status LEDs Relays in manual control mode or relay
interlock switches opened.
Meter not communicating with
application programs Check:
1.
Serial adapter and cable
2. Serial settings
3. Meter address and baud rate
If the display locks up or the meter
does not respond at all Cycle the power to reboot the
microprocessor.
Other symptoms not described
above Call Technical Support for
assistance.