Oberheim GM-400, Operating Manual

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Oberheim GM 400
Digital Signal Processor
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2. DESCRIPTION OF CONTROLS AND CONNECTORS
2.1 FRONT PANEL
1. Phones Output: this socket is a headphones output which allows the GM 400 to be used
even without connection to an amplification system.
2. Phones Level: used to regulate the volume of the signal sent to the PHONES OUTPUT.
3. Guitar Input: dedicated input socket for connection of a guitar.
4. Input Level: regulates the quantity of signal supplied as input to the GM 400. This setting
is active for both the front and the rear connectors.
5. Lcd Contrast: regulates the contrast of the liquid crystal display (LCD).
6. Display: backlit display consisting of 2 lines of 40 characters each used to display various
information, such as the number and name of the memory to be used, the programming
parameters or the input level setting.
7. Cursor: the four illuminated green keys allow the user to move the flashing cursor around
the display in order to select a parameter for modification.
8. Encoder: data input device which can be used to modify the values selected using the
cursor keys. Turn clockwise to increase the selected value, or anti-clockwise to decrease.
9. Edit key, 10. Compare key, 11. Utility key, 12. Enter/Write key, 13. Exit key, 14. Bypass
key: these keys provide all the main functions needed for using and programming the GM
400.
15. Power key: key used for switching the instrument on and off.
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