Calibration - Direct Method; Count-By (Last Digit Round-Up) Adjustment; Decimal Point Position Selection; Lockout Connection - London Electronics EasyReader ER4P Instruction Manual

'DIRECT' Calibration
Connect 'Lockout' terminal to 'common' terminal
Connect 'calibration mode' terminal to 'common'
Connect the display to power and a steady input signal before you start. Leave the display powered
for 15 minutes before you start, to allow it to reach normal operating temperature.
1) How to set the Span Calibration and Decimal Point position
1) Apply 100% Cal. signal, and ensure it is steady before proceeding
2) Press the SPAN Button for 3 seconds
3) Set the display to read your desired fullscale for the signal you're
injecting by pressing UP/DOWN Keys. To change the decimal point position, use the
DIGIT button to brighten the left-hand digit. Then, one more push of the DIGIT button
will allow you to move the decimal point with the UP/DOWN buttons.
4) When correctly set, press OK
2) How to calibrate Zero
1) Apply the Lowest cal. signal and ensure it is steady before proceeding
2) Press the ZERO Button for 3 seconds
3) Set the display to read 0 , or the desired reading for this signal, by
pressing DIGIT SELECT and theUP/DOWN Keys
4) Press OK when done
That completes the calibration of your display
Now, remove the link from 'Lockout' to 'Common' to save settings.
3) How to set the Filter Time constant
Press the OK button. You will see 'F
change this by pressing the 'UP' or 'DOWN' arrow keys. Press 'OK' when done.
4) How to Select Count by Value (after Filter Time constant - above)
After you set the Filter Time Constant, 'Cb. X' will appear, with XX as the count-by number. Use the
UP or DOWN buttons to select counting by 1, 2, 5, 10, 20 or 50. Press OK when done.
X'with the present time constant, in seconds. You can
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