Lightwave Communications LDT-5525 manual Recommended Equipment, Environmental Conditions, Warm Up

C H A P T E R 3

MAINTENANC E AND TR OUBLESHOOTING

Calibration Overview

Recommended Equipment

Recommended test equipment for calibrating the LDT-5525 Temperature Controller is listed in Table 3.1. Equipment other than that shown in the table may be used if the specifications meet or exceed those listed.

Table 3.1

DESCRIPTION	MFG / MODEL	SPECIFICATION
DMM	HP 3457A	DC Amps (@ 1.0A): +0.02%
		Resistance (@ 10Ω): 0.02%
		0.1 µA or 0.1 mW resolution
Resistors	Metal Film	15 KΩ (for ITE calibration)
		4	KΩ and 40 KΩ (for 100 mA calibration)
		4	KΩ and 400 KΩ (for 10 mA calibration)
		4	KΩ and 10 KΩ (for LM335 calibration)
		10 KΩ and 20 KΩ (for AD590 calibration)
	High Power	1	Ω, 20W, low TCR (for ITE calibration)

Environmental Conditions

Calibrate this instrument under laboratory conditions. We recommend calibration at 23oC ± 1.0oC. When necessary, however, the LDT-5525 Temperature Controller may be calibrated at its intended use temperature if this is within the specified operating temperature range of 0 to 40oC.

Warm Up

The LDT-5525 Temperature Controller should be allowed to warm up for at least 1 hour before calibration.

20 LDT-5525