User's Manual

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TT Series Transceiver Specifications
Parameter Symbol Min. Typ. Max. Units Notes
Power Supply
Operating Voltage V
CC
2.5 5.5 VDC
TX Supply Current l
CCTX
At +12.5dBm 33.9 38.1 mA 1,2
At 0dBm 15.2 18.9 mA 1,2
RX Supply Current l
CCRX
19.2 22.7 mA 1,2
Standby Current l
STD
TBD mA 1,2
Power-Down Current l
PDN
1.0 µA 1,2
RF Section
Operating Frequency Band F
C
902 928 MHz 3
Center Frequency Accuracy –5 +5 kHz 2
Number of Channels 25 3,10
Channel Spacing 500 kHz 3
Modulation Rate 45 kbps
Receiver Section
Spurious Emissions −62 dBm
Receiver Sensitivity -111 dBm 5
RSSI Dynamic Range 64 dB
Transmitter Section
Output Power P
O
−15.5 +12.5 dBm 6
Output Power Control
Range
28 dB
Harmonic Emissions P
H
−42 –36 dBc 7
Frequency Deviation ±70 kHz
Electrical Specications
Ordering Information
Ordering Information
Part Number Description
TRM-900-TT 900MHz TT Series Remote Control Transceiver
MDEV-900-TT TT Series Master Development System
Figure 2: Ordering Information
TT Series Transceiver Specifications
Parameter Symbol Min. Typ. Max. Units Notes
Antenna Port
RF Impedance R
I N
50 Ω
Environmental
Operating Temp. Range −40 +85 ºC
Storage Temp. Range −55 +125 ºC
Timing
Module Turn-On Time
Via V
CC
TBD TBD ms 4
Via POWER_DOWN TBD TBD ms 4
Via Standby TBD TBD ms 4
Serial Command Response
Factory Reset/Erase Table 560 ms 11
Write NV Parameter 8 38 ms 11
Write V/Read/Control 2 13 ms 11
IU to RU Status High 4 50 ms 10
Channel Dwell Time 12.3 12.7 ms
Interface Section
POWER_DOWN, ACK_EN
Logic Low V
I L
V
CC
*0.2 VDC
Logic High V
I H
V
CC
*0.8 V
CC
VDC
Input
Logic Low V
I L
0.8 VDC
Logic Low V
I L
Logic High V
I H
Logic High V
I H
2 5.5 VDC
Output
Logic Low V
OL
0.6 VDC
Logic High V
OH
V
CC
–0.7 V
CC
VDC
Certifications
Modular Certifications FCC, Industry Canada
Transceivers are supplied in tubes of 18 pcs.
1. Measured at 3.3V V
CC
2. Measured at 25ºC
3. Guaranteed by design
4. Characterized but not tested
5. BER=10
–3
6. Into a 50-ohm load
7. P
O
=+12.5dBm (max output power)
8. 4.5V ≤ V
CC
≤ 5.5V
9. V
CC
≤ 4.5V
10. No RF interference
11. Response time is from end of
command to start of response
Figure 3: Electrical Specifications