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The Digital Multimeter Protek 506 is
provided with a RS232C interface to be connected
to a serial port of a computer through
a female DB25 connection, and respective
software for downloading the measurements
to a PC. It presents an illuminated background
with double display for measuring frequency,
tension AC/CC, current and temperatures.
It measures capacitance, inductance, Celsius
and Fahrenheit temperature, and has the
capacity of disconnecting automatically.
In this work it is used as an interface
between the SPECTRA (which supplies a signal
between 0 and 100 mV corresponding to the
measured transmittance values) and the computer
with operative system WindowsXP© and
the PROTEK® software.
The device is divided in four sections:
- Display with capacity for four digits
or three if the measurement possesses
a negative signal,
- Seven soft keys: MENU (MIN/MAX/AVG/REL/MEM/KEEP-ON/RS232C);
ENTER; TIME; FUNC;
RANGE; HOLD; the backlight
button light and ON/OFF key,
- A rotating function selector switch
with 12 positions,
- Three input sockets (mA, COM and
AV) and an input alert buzzer with a
20 A fuse.
Prepared by: Filomena Camões, Manuela Rocha, University of Lisbon, Portugal |
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