rx2m-458-5tx2i-458-5 Radiometrix Ltd, rx2m-458-5tx2i-458-5 Datasheet - Page 6

• Manufacturer Part Number: rx2m-458-5tx2i-458-5
• Description: Uhf Narrow Band Fm Multi Channel Radio Modules
• Manufacturer: Radiometrix Ltd

Notes:
Radiometrix Ltd
1. A pause of at least 50ms must be allowed between command strings (EEPROM programming
2. /SETPAR command should be issued at the end of channel programming to put the module
3. In 458MHz band, channel 12 (458.825MHz) and channel 15 (458.900MHz) are allocated
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.
back into parallel frequency select mode
specifically for fixed alarm and radio keys/vehicle paging applications respectively and should
not be used for general purpose applications.
Figure 5: Serial configuration of TX2I-458-5 transmitter using HyperTerminal
Figure 6: Maximum allowed and programmable channels
433.05
25kHz
Set parallel frequency select mode
Go to Channel 3 (458.600MHz)
Go to Channel 13 (458.850MHz)
Go to Channel 23 (459.100MHz maximum allowed Channel)
Go to Channel 22 (459.075MHz)
TX2M will wrap around to Ch0 if >Ch23 (459.100MHz)
Increase highest channel to Ch30 (out of 458MHz band)
Go to new maximum Channel 30 (459.275MHz)
Reset the maximum Channel to regulatory band limit
Ch16 onwards changed from 458.925MHz to 459.000MHz
Go to new Ch18 frequency of 459.050MHz (not 458.975MHz)
Go to new maximum Ch23 frequency of 459.175MHz
Reset Ch16 onwards from 458.925MHz (within regulatory band)
Clear buffer and return to parallel channel selection
Clear buffer and go to last serially selected Ch23 (458.925MHz)
Return serially selected Channel to 0 (458.525MHz)
Return to channel selected by parallel pins (P1-P3) levels
Jump to 459.500MHz without storing it on EEPROM
Enable internal 1200baud modem
Enable internal 250Hz square wave modulated test transmission
458MHz
Band
433MHz Band
459.1
TX2M/RX2M Data Sheet
434.79
461.675
page 6