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Introduction
Introduction
Thank you for purchasing the GL980 midi LOGGER.
Please read this manual thoroughly before attempting to use your new product to ensure that you use it correctly
and to its full potential.
Notes on Use
Be sure to read all of the following notes before attempting to use the GL980 midi LOGGER.
1. Note on the CE Marking
The GL980 midi LOGGER complies with the following standards.
• EN 61326-1 Class A standard based on the EMC directive (2014/30/EU)
• EN 61010-1:2010 3rd standard based on the LVD directive (2014/35/ EU)
Although the GL980 complies with the above-mentioned standards, be sure to use it correctly in accordance
with the instructions and notes provided in this manual.
Moreover, use of the GL980 by incorrect procedures may result in damage to the GL980 or may invalidate its
safeguards. Please confirm all of its notes regarding use and other related information to ensure correct use.
2. Warning
This is a Class A product according to the EMC directive. In a domestic environment, this product may cause
radio interference or may be affected by radio interference to the extent that proper measurement cannot be
performed.
3. Notes for Safe Operation
(1) Be sure to use the Graphtec-supplied AC adapter. In environments where there is a lot of noise or where
the power supply is unstable, we recommend that you ground the GL980.
(2) When a high-voltage signal cable has been connected to the main unit’s analog signal input terminal,
avoid touching the leads of the input terminal’s signal cable to prevent electrical shock due to high voltage.
(3) Ensure that the GL980 power source is positioned so that it can easily be disconnected.
(4) Do not input the voltage that exceeds the specification of this device.
• If a voltage exceeding the specified value is connected, the semiconductor relay in the input section will
get damaged. Never input a voltage exceeding the specified value even for a moment. It will cause a fire.
• Have an enough margin from the specification of withstanding voltage when using this device, it have to
consider a noise and change in measurement voltage.
• Confirm that the device is not damaged before the input cable is connected to the input terminal.
• Please take care of static electricity when connecting an input cable or a thermocouple.
• Do not touch the tip of thermocouples with bare hand after the thermocouples are connected to the
terminal of this device if the tip of thermocouples is not insulated.
The static electricity from a human body will cause damage to the device.
• Do not put the tip of thermocouples to an object which contains static electricity if the tip of thermocouples
is not insulated. The static electricity of object will cause damage to this device.
• Do not put the tip of thermocouples to an object which contains leaked high voltage of chassis or metal
etc. if the tip of thermocouples is not insulated.
The leaked high voltage from object will cause damage to the device.
• We recommend that the insulation tape puts on the tip of thermocouples before connecting the
thermocouples to the input terminals.
This will protect this device from the static electricity and the leaked high voltage.
