NICHIA STS-DA1-1235B <Cat.No.131111>

2

DIRECTIONS FOR USE

(1) Auxiliary Equipment and System Requirements

● The following figure shows how the Luminous Flux Standard LED is connected.

Recommended specifications for the peripheral equipment

Peltier Controller

PID Controller

Temperature measurement accuracy of ±0.03°C.

Constant Current Power Supply for LED

Drive current accuracy: ≤ 0.1% of the set current

Digital Multimeter for Forward Voltage Measurements

Input impedance: ≥ 1 GΩ

(2) Installation

● The following figure shows how the product should be held by a holder.

(3) Measurement

● The product should be measured when luminous flux or radiant flux has stabilized after the start of

temperature control and constant current drive.

Typically, this product will be stable and ready to be used for calibration within 1 to 3 minutes.

Please refer to “STABILITY” on the following page for the characteristics during the first 5 minutes

after the LED starts emission.

This product

Peltier Controller

Constant Current Power

Supply for LED

Digital Multimeter

for Forward Voltage

Measurements