Stanford Research Systems DS345, Manual

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DS345 Synthesized Function Generator
iv
Safety and Preparation for Use
WARNING: Dangerous voltages, capable of causing death, are present in this instrument.
Use extreme caution whenever the instrument covers are removed.
This instrument may be damaged if
operated with the LINE VOLTAGE
SELECTOR set for the wrong ac line
voltage or if the wrong fuse is installed.
LINE VOLTAGE SELECTION
The DS345 operates from a 100V, 120V,
220V, or 240V nominal ac power source
having a line frequency of 50 or 60 Hz.
Before connecting the power cord to a
power source, verify that the LINE
VOLTAGE SELECTOR card, located in the
rear panel fuse holder, is set so that the
correct ac input voltage value is visible.
Conversion to other ac input voltages
requires a change in the fuse holder voltage
card position and fuse value. Disconnect
the power cord, open the fuse holder cover
door and rotate the fuse-pull lever to remove
the fuse. Remove the small printed circuit
board and select the operating voltage by
orienting the board so that the desired
voltage is visible when it is pushed firmly
back into its slot. Rotate the fuse-pull lever
back into its normal position and insert the
correct fuse into the fuse holder.
LINE FUSE
Verify that the correct line fuse is installed
before connecting the line cord. For
100V/120V, use a 1 Amp fuse and for
220V/240V, use a 1/2 Amp fuse.
LINE CORD
The DS345 has a detachable, three-wire
power cord for connection to the power
source and to a protective ground. The
exposed metal parts of the instrument are
connected to the outlet ground to protect
against electrical shock. Always use an
outlet which has a properly connected
protective ground.