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參數(shù)資料
| 型號： | QMR1-434 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | QM Receiver Module |
| 中文描述： | 質(zhì)量管理接收模塊 |
| 文件頁數(shù)： | 3/8頁 |
| 文件大?。?/td> | 97K |
| 代理商： | QMR1-434 |
Ds302_3 AUG 01
ó
2001 REG No 277 4001 England
Page 3
QM Receiver Module QMR1 / QMR2
QMR1 Details
QMR1
1
2
3
4
5
6
7
Figure 1: QMR1 Receiver
Pin Description:
Vcc ( PIN 1 )
+Ve supply pin. Operation from a 5V supply able
to source 2mA at less than 10mV
P-P
ripple.
GND ( PIN 2 )
Supply ground connection, preferably connected
to a solid ground plane.
RF IN ( PIN 3 )
50
RF input from antenna, connect using
shortest possible route. Capacitively isolated from
internal circuit.
UNCONNECTED ( PINS 4 & 5 )
Extra SIL pins for additional mechanical retention.
RSSI
( PIN 6 )
Test output providing a voltage that is proportional
to the level of the RF input on pin 3.
DATA OUT ( PIN 7 )
CMOS compatible output. This may be used to
drive external decoders.
Note:
sink/source
capability is limited to 20
μ
A.
General Information
Phase
Lock
Loop
RF
Band Pass
Filter
IF
Low Pass
Filter
Detector
Antenna
Mixer
Figure 2: Receiver Block Diagram
The receiver module is a quasi AM /FM (QM)
superhet receiver capable of handling data rates
of up to 10Kbits/s. With an on board data buffer
and phase locked loop a –110 dBm sensitivity is
achieved.
Utilising the quasi AM/FM modulation technique
and the latest phase locked loop receiver
technology with one of the compatible transmitter
modules will yield a highly efficient wireless link.
Note:
Because of the way Quasi Modulation
operates the QMR1 and the QFMT1 will not work
reliably in close proximity to each other.
RSSI Values
RF Level (dBm) pin 3
RSSI (volts) pin 6
-110
2.12
-100
2.21
-90
2.31
-80
2.46
-70
2.62
-60
2.80
-50
2.91
-40
2.97
-30
3.00
-20
3.03
-10
2.88
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