Basic Build-Up Of The Pm2528 - Philips PM2528 Operating Manual

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4. PRINCIPLE OF OPERATION
The PM2528 is subdivided into four functional parts: Analog Section, Analog Digital Converter, Control
Section and Display Keyboard Section. The basic build-up of the PM2528 is shown in fig. 13.
INTERFACE
'
(optioNaty |
va OH ANALOG ANALOG CONTROL DISPLAY/ '
i SECTION DIGITAL SECTION KEYBOARD !
7 © 1 CONVERTER SECTION
DC ATTENUATOR ADC ANALOG CONTROL SECTION DISPLAY SECTION
OC AMPLIFIER ADC CONTROL 'BP RO35 DISPLAY i
AC ATTENUATOR COUNTER 4k ROM DISPLAY CONTROL,
AC AMPLIFIER 'ANALOG CONTROL
POWER SUPPLY YBOARO SECTION
NICHES
OPTIONAL : KEYBOARD CONTROL j
PEAK DETECTOR PARALLEL OUTPUT, ton
HF caRD (c0).
ANALOG OUTPUT
sra7ig
Fig. 13. Basic build-up of the PM2528.
4.1, ANALOG SECTION
In the analog section ail quantities to be measured are converted into voltages. These voltages are supplied to
the Analog Digital Converter (ADC) via the ADC input control.