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2. DIRECTIONS f'OR USE
2.1. Installation
2.1.1. POSITION
The instrument may be used in any position except on its rear end. Make sure that the instrument is not
exposed to excessive heat.
2.1.2. CONNECTION TO THE MAINS
The instrument must have a.c. supply only. On delivery, it is set for a mains voltage of 220 V. Setting for a
different mains voltage is done as follows:
- Remove the left screw of the handle bar and take oft the left side-plate.
- Change the primary connections of the mains transformer according to Fig. 3, a diagram of which is in the
inside of side-plate.
- Change the mains voltage indication-plate at the rear.
- Refit the handle bar.
- Connect up the instrument.
2.1.3. EARTHING
The instrument must be earthed in accordance with the local safety regulations. The mains cable supplied is
provided with an earth core which is connected to the earth contacts of the mains plug. If the instrument is
connected to a mains socket with earth contacts, the cabinet is automatically earthed.
The circuit earth of the instrument and the chassis-connection of the BNC-connectors are at chassis potential.
Earthing the instrument via the chassis-connection of the BNC-connectors is not permitted.
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.-220V-+-?
Fig. 3. Changingthe primary connections of the mains transformer
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