Manual

PCB Components DPM-0295 PCB REV- 01 contd..
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Ref Designator Value
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PRESETS
PR1 2K5,HOR,CERMET(REF)
CAPACITORS
C1 220PF,50V,CD
C2 2.2uF,35V,EL,RAD
C3 0.1uF,50V,MP
C4 0.47uF,50V,MP
C5 0.01uF,50V,CD
C6 0.1uF,50V,CD
C7 0.1uF,50V,MP
C8 470uF,35V,EL,RAD
C9 10uF,35V,EL,RAD
C10 0.1uF,50V,MP
DIODES
CR1 1N4148
CR2 1N4148
CR3 Shorting Link
CR4 Not Used
CR5 Not Used
CR6 Shorting Link
IC's
IC1 TL431
IC2 Not Used
IC3 7107CPL
TRANSISTORS
Q1 MPSA12
14
SAFETY
INSULATION CLASS I, POLLUTION DEGREE 2:IEC 1010-1
This instrument has been built & tested as per IEC publications
prepared by Technical Committee No.66 ( Ref. No. CEI/IEC 1010-
1:1990 ) : Safety requirements for electrical equipment for
measurement, control & laboratory use. This instructions manual
provides information and warning data which must be taken into
consideration by the user for safety of operator and instrument.
SAFETY PRECAUTIONS TO BE TAKEN BEFORE
SETTING THE INSTRUMENT INTO SERVICE :
Warning : Any interruption of the safety lead inside or
outside the unit or disconnection of the
protection ground terminal may render the
instrument dangerous. An intentional
disconnection is prohibited.
When the instrument is to be supplied via an auto-transformer, in
order to reduce the supply voltage available, make sure the common
terminal is connected to the neutral point (grounded) of the supply
circuit. The jack should only be into a plug fitted with a grounding
piece. The safety connection should never be interrupted by the
use of an extension cord without a protection (ground) lead.
The power supply cord must be connected to the mains network
(with good value), before connecting the control of the measuring
circuits.
SYMBOLS (as marked on equipment or in this manual) :
DANGER High Voltage.
Protective ground (earth) terminal.
ATTENTION : Refer to manual.
This symbol involves a mandatory
reference to the operating manual.
The User is required to refer and
follow the relevant instructions.
!