28920 N. Avenue Williams • Valencia • California 91355
Tel 661.294.0090 • Fax 661.294.0096 • www.hakkousa.com
American Hakko Products, Inc.
9. Set the output on the calibrator to 300°C and check to see that the reading on the
Hakko 192 display is 300°C ±3°C or 572°F ±5°F.
10.If either reading falls outside the specifications, repeat steps 1 through 9 again.
11.Remove the leads of the calibrator from the Hakko 192.
Millivolt Leakage Measurement Calibration
1. Turn on the Hakko 192 and set the unit to measure leak voltage.
2. Using a standard alligator test lead, or a decade resistance box set to 0 ohms, short
connector CN5 to the conduction plate.
3. Set switch S2 to the TEST position.
4. Adjust trimpot VR8 until a 00.0mV reading is obtained on the Hakko 192 display.
5. Set switch S2 to the side marked in white.
6. Adjust trimpot VR4 counter-clockwise until it stops. Then turn it clockwise until a 00.0mV
reading is obtained on the Hakko 192 display.
IMPORTANT: There are two points on trimpot VR4 where a 00.0mV reading can be
obtained. The correct point is the one encountered first when turning the trimpot
clockwise from the starting point.
7. Set switch S2 back to the TEST position.
8. Set the calibrator for 100mV output using the RANGE button.
9. Remove the test lead from the conduction plate and connector CN5.
10.Connect the positive lead of the calibrator to the conduction plate and the negative lead
to connector CN5.
11.Set the output for 90.0mV and turn the output ON.
12.Adjust trimpot VR3 until a 90.0mV reading is obtained on the Hakko 192 display.
13.Check the Hakko 192 display at output settings of 1.0mV, 2.0mV, and 3.0mV to see that
it is accurately measuring the low end of the scale. If it does not, repeat steps 1 through
12 again.
