American Hakko Products, Inc.
16.
Set the output value on the Yokogawa CA-71 Portable Calibrator or equivalent device to 0 mV
and start the source supply.
17.
Adjust VR2 on the PCB so that the display on the HAKKO FG-101 is showing a value of 0.0 mV
18.
Stop the source supply on the Yokogawa CA-71 Portable Calibrator or equivalent device.
19.
Set the switch on the PCB (SW 1) to the TEST position.
20.
Set the output value on the Yokogawa CA-71 Portable Calibrator or equivalent device to 40 mV
and start the source supply.
21.
Adjust VR3 on the PCB so that the display on the HAKKO FG-101 is showing a value of 40 mV.
22.
Remove the source leads of the Yokogawa CA-71 Portable Calibrator or equivalent device from
the PCB.
23.
Remove the test leads of the Fluke 87 Digital Multimeter or equivalent device from the PCB.
24.
Carefully rotate the top half of the unit to re-assemble the two halves and give you a clear view
of the LCD display.
25.
Connect the source leads of the Yokogawa CA-71 Portable Calibrator or equivalent device to the
HAKKO FG-101 where the red source lead is connected to the test plate of the HAKKO FG-101
and the black source lead is connected to the grounding terminal of the HAKKO FG-101.
26.
Verify the calibration by setting the output value on the Yokogawa CA-71 Portable Calibrator or
equivalent device to the values in the table below and confirm that the display shows the
standard values corresponding to each output setting.
Output Value
(DC mV)
Standard Value
(mV)
Switch Position
(SW 1)
No Connection
0.0 to 0.1
--
0
0.0 to 0.1
TEST
2
1.9 to 2.1
40 39.5
to
40.5
46 -1
40
0.0 to 0.1
WHITE (X)
27.
If there is any deviation outside the standard values, perform the calibration again.
