Scientech 4077A
10
Operating Instructions
General Information:
The logical front panel layout of Scientech 4077A makes it easy to become familiar
with the operation of the instruments. However, even experienced users should read
the following instructions thoroughly before using the instrument.
After unpacking the instrument, check for any mechanical damage or loose parts
inside. Should there be any transportation damage, inform the supplier immediately
and do not put the instrument into operation.
Safety:
The case chassis and all measuring parts are connected to the protective earth contact
of the inlet. The mains plug shall only be inserted in a socket outlet provided with a
protective earth contact. The protective action must not be negated by the use of an
extension cord without a protective Conductor.
Warning !
Any interruption of the protective conductor inside or outside the instrument or
disconnection of the protective earth terminal is likely to make the instrument
dangerous. Intentional interruption is prohibited. The mains/line plug should be
inserted before connections are made to measuring circuits.
When removing the metal case or replacing, the instrument must be completely
disconnected from the mains supply. If any measurement or calibration procedures are
unavoidable on the opened-up instrument, these must only be carried out by qualified
personnel acquainted with the danger involved.
Operating Conditions:
The ambient temperature range during operation should be between 0° - 40°C; 90%
RH and should remain within -20°C & + 70°C during transportation or storage. The
operational position is optional; however, the ventilation holes on the Scientech
4077A must not be obstructed. Prior to calibration a preheat run of approximately 30
minutes is required.
First Time Operation:
After unpacking the instrument check for any mechanical damages. The instrument
should be plugged in mains-plug of proper mains supply 230V ± 10%. Switch on the
instrument. The power ‘On’ is indicated by lighting of displays.
Operation:
The Multiple Power Supply Scientech 4077A has three electrically isolated supply
voltages. This permits easy series connection of output voltages. In case of series
connection the maximum output voltage increases with a maximum current of 2Amp.
In the dual tracking supply, the negative (slave) Power Supply tracks the positive
(master) supply voltage with 1% tracking error. The current limit setting is also
common for both due to overload, if "Master" output voltage falls. The "Slave" will
track it. But if "Salve" gets overloaded "Master" will not track the "Slaves" output
voltage.
