9-5-B. External Control
The external control of ne tuning controls the driver circuit to drive PZT (piezo) by external
input voltage. Input ±3V voltage from pin No.1 (SIGNAL) and pin No.2 (GND) of the AIF
(analog interface) connector on the rear panel. Impressing voltages other than the above causes
voltage limit in the built-in driver circuit to be reached, and control is not available. Wave-
length is in reverse proportion to impressed voltage, and when impressed voltage is larger, the
wavelength changes to a longer wavelength, and is changed by about 0.04nm to ±3V.
(9-20 AIF (analog interface) connector pin assignment reference)
This is an AIF connector on the rear panel looking from the front.
Do not apply a voltage greater than the stated input voltage level. Doing so may
cause damage to the equipment.
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