Kenwood VT-172, Инструкция по эксплуатации

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R E A R P A N E L
© A C O U T P U T J u c k
T h i s output is used f o r w a v e f o r m observation or
f o r used of the V T - 1 7 2 a s an a m p l i f i e r .
@ D C O U T P U T J u c k
T h i s output is used f o r recording off-line measured
values.
® G N D T e r m i n a l
Ground connection.
© A C P O W E R Connector
T h i s is A C power input connector. Use the power
cord provided w i t h the unit.
@ A C L I N E V O L T A G E Selector
Set the plug of t h i s selector to the local line
voltage (100/117/220/240V A C ) .
@ F U S E HoWer
Use a screwdriver to open this holder f o r
replacement of the fuse of specified r a t i n g .
F o r 100 or 117V : 0.5A
F o r 220 or 240V : 0.3A
5. OPERATION
1. Check the mechanical zeroing of the meter.
2. Connect the signal cable to I N P U T ©
3. Set the R A N G E s w i t c h ® to the 300V range.
4. Connect the power cord and press the P O W E R ®
s w i t c h to t u r n the unit O N . The red L E D ©
should light indicating the unit is ready f o r use.
5. Input the signal to be measured and if necessary
g r a d u a l l y s w i t c h to lower (more sensitive) ranges
u n t i l an easy to read meter deflection is obtained.
USING R E L A T I V E R E F
T o make measurements w i t h respect to some a r b i t r a r y
reference level, input the signal to be used as the
reference level and use R E L A T I V E R E F © t o obtain a
OdB meter deflection w i t h o u t changing the R E L A T I V E
R E F setting measurement of other signals can be made
and read directly off the dB scale in dB w i t h respect
to the reference level.
The adjustment range of the R E L A T I V E R E F c o n t r o l
is f r o m 0 to - 1 2 d B (negative only) so to set OdB f o r
signal under OdB switching down range must be done.
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