Zeus Technology Systems Inc. ZRC-20 用户手册
INTRODUCTION
The ZRC-20 is a data transceiver which can be operated both indoors and
outdoors. It transmits and receives data on frequencies in the license- free 2.4 GHz
Industrial, Scientific, and Medical (ISM) frequency band. Data rates up to 115Kb/s can
be supported. It is designed to be built into a wide variety of application devices
requiring data communication up to several miles.
Several ZRC-20 transceivers can be configured into a wireless network with some
functioning as relays. The transceiver uses frequency hopping spread spectrum
technology to mitigate interference.
OPERATION
Industrial, Scientific, and Medical (ISM) frequency band. Data rates up to 115Kb/s can
be supported. It is designed to be built into a wide variety of application devices
requiring data communication up to several miles.
Several ZRC-20 transceivers can be configured into a wireless network with some
functioning as relays. The transceiver uses frequency hopping spread spectrum
technology to mitigate interference.
OPERATION
The physical interface to the transceiver is through a 12-pin header. The
transceiver is powered and data is sent to and from the transceiver through this header.
The transceiver is powered from a 5-volt regulated supply capable of handling 1 amp
supply current. The signals available at this connector are TTL level compatible signals.
The signaling format is the same as RS-232 so only level conversion is required to
connect the transceiver to a RS-232 compatible device. The signals and their
corresponding actions are listed in TABLE 1.
The transceiver is powered from a 5-volt regulated supply capable of handling 1 amp
supply current. The signals available at this connector are TTL level compatible signals.
The signaling format is the same as RS-232 so only level conversion is required to
connect the transceiver to a RS-232 compatible device. The signals and their
corresponding actions are listed in TABLE 1.
TABLE 1. Interface Connector Pin Functions
Pin
Name
Designation
Signal Function Direction
1
Transmitted Data
TxD
Data
To DCE
2
Clear to Send
CTS
Control
From DCE
3
Data Set Ready
DSR
Control
From DCE
4
Data Carrier Detect
DCD
Control
From DCE
5
Ring Indicator
RI
Control
From DCE
6
Received Data
RxD
Data
From DCE
7
Request to Send
RTS
Control
To DCE
8
Data Terminal
Ready
Ready
DTR
Control
To DCE
9
+5 volts dc
Power Supply
10
Ground
Power Supply
11
Datagram
Control
To DCE
12
No Connect