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3) Adjustment procedures
- Connect an external resistor VR
1
between the "V ext. cont." R1
terminal and "V ext. cont." R2 terminal on the rear panel.
- Set the VR
1
to 10 kΩ.
- Press the OUTPUT key to turn on power.
- Rotate the V FS control on the front panel with the attached
adjustment screwdriver to adjust the output voltage to the rated
voltage.
NOTE:
- The potential at the terminals of the external resistor (VR
1
) should
be floated from the (+) and (-) output and GND potentials.
- As VR
1
, use a variable resistor which is free from aged
deterioration and noises and has a temperature coefficient of
approximately 100 ppm/°C and capacity of 1/2 W or more.
- Connect VR
1
with a two-core shielded cable or stranded (+) and (-)
twist pair wires.
CAUTION
- If VR
1
is opened, over-voltage is output.
- When changing the resistance using a switch or the like, it should
be a short circuit type switch that does not make the circuit open.
- Do not set the V ext. R switch to the ON position in the condition
where the output is on. Otherwise, voltage exceeding the
maximum rating is applied to the output, resulting in breakage of
the load.
V FS
Front panel
