Martel Electronics 320 - Manual (Page 32)

4. If the reading is within the required limits, press
Select to progress to the next step.
After the last calibration step, the user is prompted to
enter the date. THE CALIBRATION DATA IS NOT
SAVED UNTIL A DATE IS ENTERED.
DETAILED PROCEDURE
1. Insure that the Model 320 to be calibrated by means
of the user calibration mode is temperature stable at
25 degrees C
±
5 degrees. Any deviation will induce
temperature compensation correction inaccuracies.
2. Press the “set up” key. Select 6 from menu #2. To
display the second menu screen, press the select key
while in the setup mode. Next the user will be
prompted to enter the user calibration code from the
unit’s calibration data sheet. When the correct access
code is entered from this data sheet, functions to be
calibrated will be displayed in the following order.
Function Required Reference Value
Volts input 10.000
Milliamp input 20.000
30