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PDF SMX1 Data sheet ( Hoja de datos )
| Número de pieza | SMX1 | |
| Descripción | Small Multi-channel VHF Transceiver | |
| Fabricantes | Radiometrix | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de SMX1 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
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NEW Radiometrix
Hartcran House, 231 Kenton Lane, Harrow, HA3 8RP, England
Issue 1, 28 August 2007
Tel: +44 (0) 20 8909 9595, Fax: +44 (0) 20 8909 2233
Small Multi-channel VHF Transceiver
UK variant:
SMX1-173-5 (10mW)
Non-UK variant: SMX1-XXX-5 (1mW-50mW)
SMX1 is small multi-channel VHF
transceiver operating on 173.200MHz-
173.325MHz band. It is also available on
151MHz band Australian allocation.
SMX1 offers a fast-route to custom
frequency on any VHF band from 130MHz
to 180MHz with 25kHz channel spacing.
SMX1
Features
! Conforms to ETSI EN 300 220-3 and EN 301 489-3
! Conforms to Australian/New Zealand AS/NZS 4268:2003
! High performance double superhet, 128 channel PLL synthesizer
! Data rates up to 5 kbps for standard module
! Usable range over 1km
! Fully screened. Low profile
! Feature-rich interface (RSSI, analogue and digital baseband)
! Incorporate a 1200baud dumb modem
! Re-programmable via RS232 interface
! Low power requirements
Figure 1: SMX1-173-5
www.DaAtaSphpeelit4cUa.ctoimons
! Handheld terminals
! Heavy vehicle/machine remote controls
! EPOS equipment, barcode scanners
! Data loggers
! Industrial telemetry and telecommand
! In-building environmental monitoring and control
! High-end security and fire alarms
! Vehicle data up/download
Technical Summary
! Operating frequency: 173.200 – 173.325MHz (UK), 150.825 – 152.450MHz (Australia)
! Custom variants from 130 – 180MHz on any 1MHz band
! 128 channels controlled via RS232 interface
! Transmit power: +10dBm (10mW) nominal. Adjustable 1 – 50mW
! Supply range: 4.2V - 16V
! Current consumption: 40mA (10mW) - 65mA (50mW) transmit, 20mA receive
! Data bit rate: 5kbps max. (standard module)
! Receiver sensitivity: -120dBm (for 12 dB SINAD)
! Size: 53 x 32 x 12mm
Radiometrix Ltd
SMX1 Data Sheet
page 1
1 page  
SMX1 serial interface commands
2400 baud at RS232 level. 8 bit data, no parity, 1 start bit, 1 or 2 stop bits, No flow control.
Transmit (pin 3 on DB9) and Signal Ground (pin 5 on DB9) should be connected to PGM and 0V
respectively.
SINGLE nnnnn Set value of N for single channel operation (value not stored in eeprom)
GOCHAN xx
Serial select of channel xx (0 to 127)
LOADMX xx
Set highest permitted (serial selected) channel xx (others default to ch0)
LOAD aa nnnnn Set value of N for channel aa (channels 0 to 15)
LOADTB nnnnn Set value of N for channel 16 (channels 17 to 127 then in sequence)
RVALUE rrrr
Enter value for R register
SETPAR
Channel selected by 3 bit parallel input (0 to 7). Also disables modem
SETSER
Channel selected by most recent 'gochan' operation
SETMOD
Enable internal modem. Frequency selected by most recent 'gochan' or 'single'
<cr>
Process entry
/ Clear all buffers
xx = channel number from 00 to 127
aa = two digit channel number from 00 to 15
nnnnn = synthesizer N register value, (up to 65535)
rrrr = synthesizer R register value, (up to 16383)
N = f RF = 173.250MHz = 6930
f Channelspacing
25kHz
R = f Xtal = 13MHz , So R=520
f channelspacing 25kHz
Notes:
1. A pause of at least 50ms must be allowed between command strings (EEPROM programming
time).
SINGLE mode does not store the N value in EEPROM. Therefore the unit is inoperative after a
power down until either another valid SINGLE command is received, or mode is changed by a
GOCHAN, SETPAR or SETSER command. SINGLE mode is intended for frequency agile
applications.
2. /SETPAR command should be issued at the end of channel programming to put the module
back into parallel frequency select mode
www.DataSheet4U.com
Radiometrix Ltd
SMX1 Data Sheet
page 5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet SMX1.PDF ] | |
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