RLC2H-433-5

EW N Radiometrix Hartcran House, 231 Kenton Lane, Harrow, HA3 8RP, England Tel: +44 (0) 20 8909 9595, Fax: +44 (0) 20 8909 2233 Issue 1, 28 September 2006 TLC2H/RLC2H UHF Narrow Band FM Low Cost multi channel radio modules UHF The TLC2H transmitter RLC2H receiver modules offer a low power, reliable data link in an industry-standard pin out and footprint. This makes the TLC2H/RLC2H pair ideally suited to those low power applications where existing wideband modules have insufficient range, or where low cost multi-channel operation is needed without compromising on RF specification or regulatory requirement. Figure 1: RLC2H receiver & TLC2H transmitter Features • • • • • • • • • 433MHz version conforms to EN 300 220-3 and EN 301 489-3 High performance double superhet. PLL synthesizer with TCXO SAW front-end filter Data rates up to 5 kbps for standard module Usable range over 500m Fully screened. Low profile Feature-rich interface (RSSI, analogue and digital baseband) Re-programmable via RS232 interface Low power requirements Applications • • • • • • • • • Handheld terminals EPOS equipment, barcode scanners Data loggers Industrial telemetry and telecommand In-building environmental monitoring and control High-end security and fire alarms DGPS systems Vehicle data up/download Heavy vehicle/machinery controls Technical Summary • • • • • • • • • Operating frequency: 433.875-434.650MHz Any custom frequency on 433MHz – 435MHz 32 channels in 433MHz band Transmit power: +10dBm (10mW) Supply range: 3.1 - 15V (Transmit), 3.7 – 15V(Receive) Current consumption: 34mA (transmit), 18mA (receive) Data bit rate: 5kbps max. (standard module) Receiver sensitivity: -120dBm (for 12 dB SINAD) Serial configuration by inverted RS232 at 3V CMOS level TLC2H/RLC2H Data Sheet page 1 Radiometrix Ltd Radiometrix Ltd TLC2H/RLC2H Data Sheet Figure 2: TLC2H block diagram page 2 36.7mm P4 Link (top) 1.5mm 0V 3mm 2mm 26.1mm 4.2mm 8.9mm RF 1 +Vin MOD 0V centre line 3 5 Connector pitch: 2.54mm Figure 3: TLC2H footprint (top view) Pin description – TLC2H Pin 1 2 3 4 5 P0/PGM P1 P2 P3 Name Vcc No pin TXD No pin 0V Parallel channel select LSB, bit 0 Parallel channel select, bit 1 Parallel channel select, bit 2 Parallel channel select, bit 3 Parallel channel select MSB, bit 4 Function 3.1 – 15V DC power supply Not present in TLC2H DC coupled input for 3V CMOS logic. Rin=47kΩ Not present in TLC2H Ground True logic (0V = low). Weak pullup to 3V; Serial frequency programming / configuration1 True logic (0V = low). Weak pullup to 3V True logic (0V = low). Weak pullup to 3V True logic (0V = low). Weak pullup to 3V P4 Jumper inserted, P4=0 (Channel 00 – Channel 15 at 50kHz step) Jumper Jumper clear, P4=1 (Channel 16 – Channel 31 at 50kHz step) Notes: 1. Serial programming is by an inverted, CMOS logic level, 2400 baud RS232 datastream applied to the P0 pin. 2. Parallel channel select is by 4 pin parallel input (LSB selected by a 2mm header, accessed through a hole in the can) 3. Channel select inputs have pullups (10K) to 3V internal rail. Do not exceed 3v logic levels on this port. 4. Transmitter will shutdown if Vcc falls below about 2.9v 5. TXD: logic low < 1.3v, logic high > 1.7v. TXD maximum voltage = 10v Radiometrix Ltd TLC2H/RLC2H Data Sheet page 3 Radiometrix Ltd TLC2H/RLC2H Data Sheet Figure 4: RLC2H block diagram page 4 Figure 5: RLC2H footprint (top view) Pin description – RLC2H Pin 1 2 3 4 5 P0/PGM P1 P2 P3 Jumper P4 Name Vcc RSSI 0V RXD AF Parallel channel select LSB, bit 0 Parallel channel select, bit 1 Parallel channel select, bit 2 Parallel channel select MSB, bit 3 Parallel channel select Jumper Function DC supply (3.7V to 15V, at 18mA). 0.5V-2.5V DC level. 60dB dynamic range. 40kΩ output impedance Ground Open collector digital data output with internal 47kΩ pull-up to Vcc 600mV pk-pk audio. DC coupled, approx 0.8V bias. True logic (0V = low). Weak pullup to 3.5V Serial frequency programming / configuration1 True logic (0V = low). Weak pullup to 3.5V True logic (0V = low). Weak pullup to 3.5V True logic (0V = low). Weak pullup to 3.5V Jumper inserted, P4=0 (Channel 00 – Channel 15 at 50kHz step) Jumper clear, P4=1 (Channel 16 – Channel 31 at 50kHz step) NOTES: 1. Data recovery circuit used for RXD is not a simple 'average and compare' type. It is a peak sampling quasi-DC coupled design, allowing a greater than usual flexibility in data format. Maximum time between data transitions: 250ms 2. Serial programming is by a 2400 baud inverted 'RS232' (3V CMOS levels) datastream applied to the P0 pin. If connection to a true RS232 port is desired, then a suitable inverting level shifter / buffer (MAX232 or NPN switch transistor) is needed. 3. Parallel channel select is by a 4 pin parallel input (MSB selected by a 2mm header, accessed through a hole in the can). 3V CMOS levels should be used. 4. As supplied the frequency table is thus: ch 0-15 433.875 – 434.625 MHz (50KHz steps) ch 16-31 433.9 - 434.65 MHz (50KHz steps) Radiometrix Ltd TLC2H/RLC2H Data Sheet page 5 Serial interface commands 2400 baud RS232. 8 bit data, no parity, 1 start bit, 1 or 2 stop bits. Serial data is sent to the unit on one of the parallel channel select pins (P0). It is very important that the unit does not ‘decode’ switch bounce in ordinary operation as a command string, or spurious rewriting of the EEPROM will result. For this reason the user must send the 16 character string ENABLESERIALMODE to fully enable the serial command mode before sending any of the command strings listed below. Command mode is disabled on power down, or on reception of a # character. GOCHAN aa LOAD aa nnnnn SETPAR SETSER RVALUE rrrr SINGLE nnnnn / # Serially select channel XX, where XX is 0 to 31 Set value of N register for channel aa, where aa is Channels 0 to 31 Channel selected by 5 bit parallel inputs (4pins + jumper) Channel selected by most recent GOCHAN operation Set value for R register Set value of N for single channel operation. N value NOT stored in EEPROM Process entry Clear all buffers Disable command mode aa = a two digit channel number from 00 to 31 nnnnn = synthesizer N register value (up to 65535) rrrr = synthesizer R register value (up to 16383) N TX = f RF f Channelspacing = 433.875MHz = 17355 25kHz R= f TCXO f channelspacing = 13MHz , So R=520 25kHz N RX = f RF − 21.4MHz 433.875MHz − 21.4 = = 16499 f Channelspacing 25kHz Note: A pause of at least 25ms 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. Radiometrix Ltd TLC2H/RLC2H Data Sheet page 6 TLC2H, RLC2H channels are spaced at 50kHz interval into two frequency groups. 50kHz spacing between sequential channels minimises adjacent channel interference. P4 jumper link determines which frequency group is selected. Channel (Jumper P4 inserted) 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Frequency (MHz) 433.875 16 433.925 17 433.975 18 434.025 19 434.075 20 434.125 21 434.175 22 434.225 23 434.275 24 434.325 25 434.375 26 434.425 27 434.475 28 434.525 29 434.575 30 434.625 31 434.650 434.600 434.550 434.500 434.450 434.400 434.350 434.300 434.250 434.200 434.150 434.100 434.050 434.000 433.950 433.900 Channel (Jumper P4 clear) Frequency (MHz) Radiometrix Ltd TLC2H/RLC2H Data Sheet page 7 Condensed specifications Frequency Peak deviation Frequency stability Channel spacing Number of channels Operating temperature Spurious radiations Transmitter Output power TX on switching time Modulation type TX modulation bandwidth Adjacent channel TX power TX spurious Transmitter Supply Voltage Current Inputs Size Interface 433.875-434.675MHz (custom variants on 433MHz – 435MHz) ±3kHz ±1.5kHz 25kHz (12.5kHz by special order) 32 channels selected via RS232 interface or 2 x 16 groups by parallel port -10 ºC to +60 ºC (Storage -30 ºC to +70 ºC) Compliant with ETSI EN 300 220-3 and EN 301 489-3 +10dBm (10mW) ±1dB (1mW or 5mW by special order) 50ms from power up FSK (F3D) DC – 5kHz (3V CMOS compatible)