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Gossen Metrawatt GmbH
2.15
Auxiliary Functions
2.15.1 Trigger Function Selection
The Trigger Function in main menu is used to select the trigger object. Selecting “Tran” is used to trigger transient operation, and
selecting List is used to trigger sequence (list) operation.
2.15.2 Knob Function
The Knob in main menu is used to enable/disable the knob function. Select On to enable the knob function, and select Off to disable.
2.15.3 Key Sound
The Key Sound in main menu is used to control the key sound. Select On to activate the key sound and select Off to forbid.
3
Installation
3.1
Initial Check
When you receive the load, please check it for any obvious damage that may have occurred during shipment. Keep the original pack-
ing materials in case the load has to be returned to GMC-I Service GmbH in the future.
Please confirm that there are no broken keys or knobs, that the cabinet and panel surfaces are free of dents or scratches, and that the
display is not scratched or cracked.
3.2
Environment/Installation Location
The load can operate at its full power within the temperature range of 0 °C to 40 °C, and at derated power from 40 °C to 55 °C, or the
overtemperature protection will be caused.
Place the load in a location with good ventilation, and keep a distance from electromagnetic interference. Do not place the load in the
flammable atmosphere.
Your load must be installed in a location that allows sufficient space at the sides and rear of the load for adequate air circulation. The
fans cool the load by drawing in air through the sides and exhausting it out from the back. The rubber bumpers must be removed for
rack mounting.
3.3
Power-On/ Self-Test
A power-on self-test can inspect the basic operations of the load to assure you that the load is operational. First, before the load is
switched on, check AC power-line voltage to verify the power-line voltage selected by 115 V/230 V Toggle Key on the rear panel is in
accordance with the proper voltage in your local place.
Connect the power-line cord and a power-on self-test occurs automatically when you turn on the load. If the load detects an error
during power-on self-test, the error messages will be displayed as shown below:
If no error is detected, the LCD will show CCH, the initial display, and the input will be turned off. If the parameters have been modified
previously and saved in location 0, the load will recall these modified parameters automatically. After around 20 minutes’ warm-up of
the load, the following test can be executed.
Connect the output of a power supply to the load’s input with correct polarity to execute CCH 5 A and CV 5 V operations. If the load
works normally, it will draw 5 A or set input voltage to 5 V within the allowed tolerance.
Error Code
Error Message
601
LCD self-test error
603
System ADC test failed
607
Rundown too noisy
608
Keypad self-test error
609
EEPROM checksum failed
630
Temperature test failed
