Global Specialties PB-502 - Manual - Manual (Page 6)

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PRODUCT DESCRIPTION
The PB-502 is an instrument capable of satisfying the many requirements arising in the
design and study of analog and digital circuitry. The instrument contains three integral
power supplies and input/output devices that simplify the construction of a wide range
of circuits. Typical circuits that can be built on the PB-502 include, operational
amplifiers, comparators, A to D converters, gates and counters. The PB-5022 can even
interface directly to a microprocessor.
The PB-502 contains eight LED logic indicators, eight logic switches and two BCD -
input seven-segment displays. It also contains a clock with three switch-selectable
output frequencies, and three power supplies. The power supplies are +12 volts, +5
volts and -12 volts.
The logic indicators on the PB-502 can serve two functions. They may be used either as
eight "real time" logic probes or as two latchable four-bit logic indicators.
All of the PB-502 functions mentioned above are internally connected to three
solderless interconnect sockets with two tie points for each signal. In addition, a UBS-
100 solderless breadboarding socket is permanently attached to the unit. It provides a
convenient work area for the circuitry being designed or studied. All sockets allow
insertion of components or wires up to 22 gauge.
A wall adapter type power supply is used to generate the regulated voltages used on
the PB-502. Power supply connections to the instrument are made via the five (5) pin
DIN connector.
The PB-502 is housed in a durable and attractive case with a hinged protective cover.
This makes the unit portable and stackable for storage purposes.