Kenwood CS-3025, Instruction Manual

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PREPARATION FOR U S E
S A F E T Y
Before connecting the instrument to a power s o u r c e , carefully read the following infor-
mation, then verify that the proper power cord is used and the proper line f u s e is installed
for power source. T h e specified voltage is s h o w n at the left side of the power cord on
the rear panel. If the power cord is not applied for specified voltage, there is a l w a y s a
certain amount of danger from electric shock.
Line voltage
T h i s instrument operates using A C - p o w e r input voltages that 1 0 0 / 1 2 0 / 2 2 0 / 2 4 0 V at fre-
quencies from 5 0 Hz to 6 0 Hz.
Power cord
T h e ground wire of the 3-wire A C power plug places the c h a s s i s and housing of the oscil-
loscope at earth ground. Do not attempt to defeat the ground wire connection or float
the oscilloscope; to do so may pose a great s a f e t y hazard.
T h e appropriate power cord is supplied by an option that is specified w h e n the instrument
is ordered.
T h e optional power cords are s h o w n a s follows in Fig. 1 .
Line f u s e
T h e fuse holder is located on the rear panel and contains the line f u s e . Verify that the
proper f u s e is installed by replacing the line f u s e .
EQUIPMENT PROTECTION
1 . Never allow a small spot of high brilliance to remain stationary on the screen for more
than a f e w seconds. T h e screen may become permanently burned. A spot will occur
only w h e n the scope is set up for X - Y operation and no signal is applied. Either reduce
the intensity so the spot is barely visible, s w i t c h back to normal s w e e p operation w h e n
no signal is applied, or set up the scope for spot blanking.
2 . Never cover the ventilating holes on the top of the oscilloscope, a s this will increase
the operating temperature inside the c a s e .
3 . Never apply more than the maximum rating to the oscilloscope inputs.
^ C H 1 , C H 2 INPUT j a c k s :
8 0 0 Vp-p or 4 0 0 V ( D C + A C peak)
E X T T R I G INPUT j a c k :
5 0 V (DC + A C peak)
Never apply external voltage to the oscilloscope output terminals.
4 . A l w a y s connect a cable from the earth ground (GND) terminal of the oscilloscope to
the c h a s s i s of the equipment under t e s t . Without this caution, the entire current for
the equipment under test may be d r a w n through the probe clip leads under certain cir-
c u m s t a n c e s . S u c h conditions could also pose a s a f e t y hazard, w h i c h the ground cable
will prevent.
5. A l w a y s use the probe ground clips for best results. Do not use an external ground wire
in lieu of the probe ground clips, a s undesired signals may be introduced.
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