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T6-86985 Datasheet(PDF) 7 Page - rfsolutions.ltd |
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T6-86985 Datasheet(HTML) 7 Page - rfsolutions.ltd |
7 / 7 page DS306-3 May 03 2003 REG No 277 4001, England. Page 7 Radio Transmitter & Receiver Modules T6 / R6 Application Circuit The application circuits show how the QFMT6 transmitter and the QFMR6 receiver can easily be integrated into a system to form a wireless link. Figure 3: QFMT6 Quasar Transmitter Application Circuit Figure 4: QFMR6 Quasar Receiver Application Circuit RSSI Values: The QFMR6 RSSI output provides a DC output proportional to the RF input signal. The table shows the typical RSSI value depending on the RF signal strength Note that the region between –90 and –70 is with receiver AGC (automatic gain control) operating. If required, a receiver version with AGC disabled can be provided as a factory pre-set option. This would linearise the RSSI curve. R. F. Solutions Ltd., Unit 21, Cliffe Industrial Estate, Lewes, E Sussex, BN8 6JL, England Tel +44 (0)1273 898 000 Fax +44 (0)1273 480 661 http://www.rfsolutions.co.uk Email sales@rfsolutions.co.uk R F Solutions is a member of the Low Power Radio Association. Information contained in this document is believed to be accurate, however no representation or warranty is given and R.F. Solutions Ltd. assumes no liability with respect to the accuracy of such information. Use of R.F.Solutions as critical components in life support systems is not authorised except with express written approval from R.F.Solutions Ltd. RF Signal strength / dBm -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 1.00 1.20 1.40 1.60 1.80 2.00 2.20 2.40 2.60 2.80 3.00 Typical RSSI Characteristics of the QFMR6 AGC Action RF Signal Strength / dBm R RS SS SII // V V --1 12 20 0 1 1..3 35 5 --1 11 10 0 1 1..4 41 1 --1 10 00 0 1 1..5 57 7 --9 90 0 1 1..7 79 9 --8 80 0 1 1..8 8 --7 70 0 1 1..8 8 --6 60 0 2 2..1 15 5 --5 50 0 2 2..4 45 5 --4 40 0 2 2..5 58 8 --3 30 0 2 2..5 59 9 --2 20 0 2 2..5 59 9 A0 A1 A2 A3 A4 A5 A6 A7 VSS D8 D9 D10 D11 DIN OSC2 OSC1 VT VDD 1 2 3 4 5 6 7 8 910 11 12 13 14 16 18 HT12D +5V 15 ROSC DATA OUT 1 DATA OUT 2 DATA OUT 3 DATA OUT 4 17 1K5 Ω ΩΩ Ω Quasar R 5 12 34 5 6 7 +5V ANTENNA T5 A0 A1 A2 A3 A4 A5 A6 A7 VSS AD8 AD9 AD10 AD11 TE\ OSC2 OSC1 DOUT VDD 1 2 3 4 5 6 7 8 910 11 12 13 14 15 16 17 18 HT12E ROSC +5V 45 12 3 +5V ANTENNA |
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