V-3-00-EN
4-meter. User Manual
Maintenance and Service
Replacing the Batteries
Only qualified technicians should maintain or service this
device.
Read and be familiar with this instruction manual before us-
ing this device.
The printed circuit boards (PCBs) contain static sensitive
parts. Always use appropriate electrostatic discharge pro-
tection, such as an electrical-grounding wrist strap, when
working with internal components.
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Required items:
2 x AAA/LR6/1.5V alkaline, non-rechargeable batteries
To replace the battery:
1. Remove the back cover
2. Insert the new 1.5-volt batteries into the battery holder
Batteries cover
Batteries holder
Calibrating 4-meter
Maintenance and Service
Each 4-meter unit is factory calibrated to a radiometric standard in
accordance to the National Institute of Standards and Technology
(NIST). The Calibration Certificate is enclosed with this the device.
To assure continued accurate measurement of irradiance, the 4-me-
ter should be recalibrated every
24 months
to a radiometric (irradi-
ance) standard. Because certain calibration factors are stored in the
device memory, the unit must be recalibrated at MTTS. The date of the
last calibration is labelled on the Calibration Certificate.
The 4-meters under warranty are recalibrated at no cost. Others are
recalibrated at nominal cost. For information on returning the device,
see below.
Service and Repair
4-meter has no customer serviceable parts, and must be returned
to MTTS for all repairs and parts replacement. After any service, the
device must be recalibrated radiometrically to assure accurate meas-
urement of irradiance.
Customer attempts to service 4-meter will invalidate the
warranty and may result in irreparable damage
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