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QLXD Specifications
RF Carrier Frequency Range
470–937.5 MHz, varies by region (See Frequency Range and Output Power table)
Working Range
100 m (328 ft)
Note: Actual range depends on RF signal absorption, reflection and interference.
RF Tuning Step Size
25 kHz, varies by region
Image Rejection
>70 dB, typical
RF Sensitivity
-97 dBm at 10
-5
BER
Latency
<2.9 ms
Audio Frequency Response
QLXD1 20 – 20 kHz (±1 dB)
QLXD2 Note: Dependent on microphone type
QLXD4
Dimensions
41 mm x 197 mm x 151 mm (1.63 in. x 7.75 in. x 5.94 in.),
H x W x D
Weight
777 g (1.71 lbs), without antennas
Housing
steel
Power Requirements
12 V DC @ 0.4 A, supplied by external power supply (tip
positive)
RF Input
Spurious Rejection
>80 dB, typical
Connector Type
BNC
Impedance
50 Ω
Audio Output
Gain Adjustment Range
-18 to +42 dB in 1 dB steps
Configuration
1/4" (6.35 mm) Impedance balanced
(Tip=audio, Ring=no audio,
Sleeve=ground)
XLR balanced (1=ground,
2=audio +, 3=audio −)
Impedance
1/4" (6.35 mm) 100 Ω (50 Ω Unbalanced)
XLR 100 Ω
Full Scale Output
1/4" (6.35 mm) +12 dBV
XLR LINE setting= +18 dBV,
MIC setting= -12 dBV
Mic/Line Switch
30 dB pad
Phantom Power Protection
1/4" (6.35 mm) Yes
XLR Yes
Networking
Network Interface
Single Port Ethernet 10/100 Mbps
Network Addressing Capability
DHCP or Manual IP address
Maximum Cable Length
100 m (328 ft)
QLXD1
Mic Offset Range
0 to 21 dB (in 3 dB steps)
Battery Type
Shure SB900 Rechargeable Li-Ion or AA batteries 1.5 V
Battery Runtime
@ 10 mW
Shure SB900 up to10 hours
alkaline up to 9 hours
See Battery Runtime Chart
Dimensions
86 mm x 65 mm x 23 mm (3.38in. x 2.57 in. x 0.92 in.) H x W
x D,without antenna
Weight
138 g (4.9 oz.), without batteries
Housing
Cast aluminum
Audio Input
Connector
4-Pin male mini connector (TA4M), See drawing for details
Configuration
Unbalanced
Impedance
1 MΩ, See drawing for details
Maximum Input Level
1 kHz at 1% THD
8.5 dBV (7.5 Vpp)
Preamplifier Equivalent Input Noise (EIN)
System Gain Setting ≥ +20
-120 dBV, A-weighted, typical
RF Output
Connector
SMA
Antenna Type
1/4 wave
Impedance
50 Ω
Occupied Bandwidth
<200 kHz
Modulation Type
Shure proprietary digital
Power
1 mW or 10 mW
See Frequency Range and Output Power table, varies by
region
Audio Dynamic Range
System Gain @ +10
>120 dB, A-weighted, typical
Total Harmonic Distortion
−12 dBFS input, System Gain @ +10
<0.1%
System Audio Polarity
Positive pressure on microphone diaphragm produces positive voltage on pin 2 (with respect to pin 3 of
XLR output) and the tip of the 6.35 mm (1/4-inch) output.
Operating Temperature Range
-18°C (0°F) to 50°C (122°F)
Note: Battery characteristics may limit this range.
Storage Temperature Range
-29°C (-20°F) to 74°C (165°F)
Note: Battery characteristics may limit this range.
QLXD2
Mic Offset Range
0 to 21 dB (in 3 dB steps)
Battery Type
Shure SB900 Rechargeable Li-Ion or AA batteries 1.5 V
Battery Runtime
@ 10 mW
Shure SB900 up to10 hours
alkaline up to 9 hours
See Battery Runtime Chart
Dimensions
256 mm x 37 mm (10.1 in. x 1.5 in.) L x Dia.
Weight
347 g (12.2 oz.), without batteries
Housing
Machined aluminum
Audio Input
Configuration
Unbalanced
Maximum Input Level
1 kHz at 1% THD
145 dB SPL (SM58), typical
Note: Dependent on microphone type
RF Output
Antenna Type
Integrated Single Band Helical
Occupied Bandwidth
<200 kHz
Modulation Type
Shure proprietary digital
Power
1 mW or 10 mW
See Frequency Range and Output Power table, varies
by region
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