User Guide

Page 8
(3.5) Repeatability check with 1000 and re-adjustment
Press the  button twice. Then “F.S” is displayed at the upper position
of the LCD. Use 1000 resistor. Open and close the jaws, and
check the readings on the LCD. Repeat this kind of work five times.
Each time the reading should be within 900 ~ 1100.
If the reading is within above range, proceed to the next process.
If one of the readings is out of above range, repeat the adjustment
from 2.-(4) Full scale adjustment (Hi range).
(4) Resistance range Adjustment(3) (Adjustment for Lo range)
(4.1) 20.0
Press the MEM MODE button once. Then 20.0 is displayed at the
upper position of the LCD. Use 20 resistor.
Press the MEM/WRITE button when MEM mark appears
on the LCD and the reading becomes stable.
(4.2) 10.0
Press the  button once. Then 10.0 is displayed at the upper position
of the LCD. Use 10  resistor.
Press the MEM/WRITE button when MEM mark appears
on the LCD and the reading becomes stable.
(4.3) 0.1
Press the  button once. Then 0.1 is displayed at the upper position of
the LCD. Use 0.1 resistor.
Press the MEM/WRITE button when MEM mark appears
on the LCD and the reading becomes stable.
(4.4) Disconnect the 61-920 from the test wires, and press the POWER
button to power off the instrument.
(5) Current range adjustment
Prepare following items for adjustment.
Current generator, coil for current adjustment (0.1A/ 1A/ 10A/ 30A/ 50Hz or 60Hz)
Press the POWER button without clamping anything while the CAL button is being
pressed down. Then release the POWER button.
Version information about this instrument (3-digit) is displayed for a moment. Then the
instrument goes into  adjustment mode.
(5.1) Press the A/ button once and the instrument goes into “A mode”.
(5.2) Clamp the coil for current adjustment with 61-920.
(5.3) Adjust the current range.
(a). 0.1A adjustment
Generation current: 0.1A@50Hz
Press the MEM/WRITE button after the reading becomes stable.
(saving the adjustment value)
(b). 1.0A adjustment
Press the MEM/MODE button once.
Generation current: 1A@50Hz
Press the MEM/WRITE button after the reading becomes stable.
(saving the adjustment value)
(c) 10.0A adjustment
Press the MEM/MODE button once.
Generation current: 10A@50Hz
Press the MEM/WRITE button after the reading becomes stable.
(saving the adjustment value)
Form number TM61920 Rev 4 July 2008