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Overview of the MRC-921 MicroBase
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Figure 1 shows a typical MRC-921
MicroBase system.
The MRC-921 MicroBase is a communication cradle
that allows a wireless MicroRadio-based scanner,
such as the PTC-921, to communicate with a host.
The cradle connects to the host’s serial port via cable
and communicates through an RS-232 asynchronous
protocol.
The MRC-921 can support one to five
PTCs, depending on the size and
frequency of transactions.
The cradle allows interactive communication between
the host and multiple PTCs. Therefore, data and
messages can be sent both to and from the host.
This unit also recharges the nickel-cadmium battery
packs that supply power for the PTC-921. Each
charger can hold a PTC-921 and a spare battery pack.
The spare battery bay contains a fast charger, which
charges spare PTC-921 battery packs in 4 hours.
The PTC bay can be ordered as either a fast or trickle
charger. A fast-charging bay charges the battery pack
in the PTC in 4 hours. A trickle-charging bay charges
the PTC’s battery pack in 12 to 16 hours.
RF
Host
MRC-921
PTC-921
Cable
Figure 1. A typical MRC-921 MicroBase system
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