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參數(shù)資料
| 型號： | ER400TRS |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | LPRS Prelimina ry Data Sheet |
| 中文描述： | LPRS Prelimina ry數(shù)據(jù)表 |
| 文件頁數(shù)： | 2/7頁 |
| 文件大?。?/td> | 68K |
| 代理商： | ER400TRS |
LPRS Preliminary Data Sheet
Easy-Radio ER400TRS Transceiver
Easy-Radio ER400TS-RS 1.3
Copyright LPRS 2002. Iss. 1-3 September 2003
Page 2 of 7
Application & Operation
Figure 2 shows a typical system block diagram comprising hosts (user’s application) connected to Easy-
Radio Transceivers. The hosts (A & B) will be monitoring (collecting data) and/or controlling (sending data) to
some real world application.
Easy-Radio
Transceiver
(A)
Host
(A)
Serial Data Input
Serial Data Output
Host Ready
Busy
Easy-Radio
Transceiver
(B)
Host
(B)
Serial Data Input
Serial Data Output
Host Ready
Busy
RF Link
Figure 2 Typical System Block Diagram
The hosts provide serial data input and output lines and two ‘handshaking’ lines that control the flow of data
to and from the Easy-Radio Transceivers. The ‘Busy’ output line, when active, indicates that the transceiver
is undertaking an internal task and is not ready to receive serial data. The ‘Host Ready’ input is used to
indicate that the host is ready to receive the data held in the buffer of the Easy-Radio Transceiver.
The host should check before sending data that the ‘Busy’ line is not high, as this would indicate that the
transceiver is either transmitting or receiving data over the radio link. It should also pull the ‘Host Ready’ line
low and check that no data appears on the Serial Data Output line.
Detailed operation of interfacing, handshaking (including timing) is described in the ‘Easy-Radio Software
Guide’.
Pin Out
Pin Description
Pin
No
1
2
Name
Description
Notes
Antenna
RF Ground
50 Ohm RF input/output. Connect to suitable antenna.
RF ground. Connect to antenna ground (coaxial cable screen
braid) and local ground plane. Internally connected to other
Ground pins.
Received Signal Strength Indication
Digital Output to indicate that transceiver is ready to receive
serial data from host.
Digital output for received data to host
Digital input for serial data to be transmitted
See Note
3
4
RSSI
Busy Output
See Note
CTS function
5
6
Serial Data Out
Serial Data In
3
2
1
37.0mm
1 5 . 4 6 m m
14.0mm
Pin Pitch 2.54 mm PCB Hole Size 1.0 mm
4
5
4.0mm
Top View
6
7
8
9
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