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Mini-spectrometers
KXX-A12040 A
This document describes general precautions for using Hamamatsu mini-spectrometers.
If the product comes with special precautions on the delivery specification sheet, then be sure to strictly
comply with those instructions.
1. All models
Mini-spectrometers (hereafter “the product”) are high precision optical components. Do not apply excessive
vibration and shock to the product. Avoid operating and storing it in dusty locations or in areas exposed to
water, high temperature or high humidity.
When cleaning the enclosure, wipe it with a clean, soft, dry cloth. Do not use organic solvents such as
thinner and acetone.
Do not apply excessive force to the connector. Doing so may cause a poor connection or damage the
connector.
Use the product at incident light levels that do not cause the A/D count of each pixel to become saturated.
Correct measurement may not be possible when some pixels become saturated. Set a shorter integration
time if the A/D count is saturated. If the integration time cannot be shortened, we recommend you use a
neutral density filter.
Even when no light is input, the product generates an output consisting of an offset component and dark
signal. The offset component is not dependent on integration time, but the dark signal is dependent on it.
Coefficients for converting image sensor pixel numbers into wavelengths are described in the final
inspection sheet that comes with each product. For module types, those coefficients are also written into the
EEPROM in the mini-spectrometer. However, we do not provide coefficients for converting the output value
of each pixel to a value proportional to the incident light level.
2. Module type
The optical connector is exposed to outside air, so when not using the product for extended periods, place a
cap on the optical connector or connect the input optical fiber to the connector. When connecting the optical
fiber, clean the ferrule on the optical fiber as needed.
Power supplied through a USB port from a PC is limited to 5 V/500 mA per port due to USB specifications. So
power exceeding this limit cannot be supplied to the product. If connecting two or more products to one
USB port via a hub, use a hub with a power supply.
Evaluation software differs according to the product model. Be sure to install the evaluation software that
supports the product you will be using.
Precautions
