Shure R7 Mode D'emploi page 2

SPECIFICATIONS
RF Carrier Frequency Range
782–810 MHz
Working Range
U1, U2: 152.4 m, minimum, under typical conditions; 487.6 m line of sight
NOTE: Actual working range depends on RF signal absorption, reflection and
interference
Audio Frequency Response
50 to 15,000 Hz, ±2 dB.
NOTE: Overall system frequency response depends on the microphone element
Gain Adjustment Range
U1: 0 to 40 dB
U2: 0 to 26 dB
Modulation
±15 kHz deviation compressor-expander system with pre-and de-emphasis
RF Power Output
U1, U2: 10 mW maximum
Dynamic Range
>102 dB, A-weighted
RF Sensitivity
U4S
–110 dBm
12 dB SINAD
–105 dBm
30 dB SINAD
Image Rejection
90 dB typical
Spurious Rejection
75 dB typical
Ultimate Quieting (ref. 18 kHz deviation)
>100 dB, A-weighted
Audio Polarity
Positive pressure on microphone diaphragm (or positive voltage applied to tip of
WA302 phone plug) produces positive voltage on pin 2 with respect to pin 3 of
low impedance output and the tip of the high impedance
System Distortion (ref. ±18 kHz deviation, 1 kHz modulation)
0.3% Total Harmonic Distortion typical
Power Requirements
U1, U2: 1.5V AA alkaline battery (Duracell MN1500 recommended); Nicad optional
U4: 230 Vac , 50/60 Hz
Power Consumption:
U4S: 9.6 W min., 13.2 W max.
U4D: 12 W min.,16 W max.
UA840: 15 W min., 16 W max.
Battery Life (Typical)
U1, U2: 12 hours (with Duracell MN1500 1.5V AA alkaline battery)
Operating Temperature Range
-6° to +49° C
NOTE: Battery characteristics may limit this range
U4D
–107 dBm
12 dB SINAD
–102 dBm
30 dB SINAD
2
1
/ -inch output
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