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參數(shù)資料
| 型號： | CM1481 |
| 英文描述： | Non-Predictive Selcall Module |
| 中文描述： | 非預(yù)測Selcall模塊 |
| 文件頁數(shù)： | 3/24頁 |
| 文件大?。?/td> | 162K |
| 代理商： | CM1481 |
3
Brief Introduction to The CM1481
The CM1481 is a compact 5- or 6-Tone CCIR, EEA
and ZVEI selcall module with individual address
encoding, non-predictive all-tone decoding,
transponding and full, all-system GROUP Call and ANI
capabilities.
In addition to normal selcall facilities, the CM1481
offers, as standard, a range of over-air control facilities
to allow a base-station additional control when working
with remote units.
These added facilities are:
‘Stun’ and ‘Release’ - To allow the controller to
completely ‘freeze’ all module and parent radio audio
functions rendering it inoperative until ‘Released’. This
to counter theft, air misuse/abuse or non-payment of
fees.
‘Re-Configuration’ - To change module addresses
and modes via an over-air command. This to allow
unit participation in other user groups.
CM1481 - A Summary of Standard Functions and Features
Configuration by Menu-Driven
Software via a Serial ‘PC’ Link
CCIR, EEA and ZVEI
Toneset/Length Capabilities
HSC Signalling Control Features
Over-Air “Stun” & “Release”
Rapid Over-Air “Re-
Configuration”
Remote Reset
Individual Addressing
Extended Group & Data Tone
Facilities
Simple Radio Interface
Low-Power Requirement
(4.0mA typ)
“Muted” Call Initiation
Programmable I/O Polarities
Lead/Trail Automatic Number
Identification (ANI)
Programmable Lead-In Tone
and Delay
Transponding Facility
Single or Dual Button Operation
Timed Mute Reset
Tx (PTT) Time Out + Warning
PTT (Busy) Lockout
CMOS Compatible Logic
Operators' Coded Call-Alert
Capability
U3
U4
U2
U1
D
X1
-AUDO SWTCH
OUT
IN
J113
J11
+
+-
Configuration Interface Connector
CM1481
‘Stun’, ‘Release’ and ‘Re-Configuration’ operations
are carried out using a secure authentication protocol
to prevent accidental or illegal transactions.
The unit may be muted by the base.
Under the control of its on-board μController,
operating from instructions written to it by a simple
menu-driven configuration operation from a basic 'PC'
type computer, the CM1481 can completely control
the workings of the radio's Rx and Tx audio
processes.
After Configuration the only operator inputs
required are Microphone/Handset, Volume and Selcall
Tx/Mute controls.
The CM1481 will detect and decode all incoming
tone information, controlling the radio functions whilst
providing the operator with various coded audio alerts
to indicate status and progress.
Fig.1 A Typical Configuration Setup
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