SHURE AD24DA/B87A-P55 ไมค์ไร้สายดิจิตอลคู่ หัว Beta87A 3 ช่วงความถี่ UHF ควบคุมผ่าน PC หรือ MAC

AD24DA SPECIFICATIONS

• Dimensions (H × W × D)
  1.7 × 19.0 × 13.1 in
  (44 × 483 × 333 mm)
• Weight
  10.1 lb (4.6 kg)
  without antennas
• Housing
  Steel; extruded aluminum
• Power Requirements
  100 to 240 VAC, 50–60 Hz
  0.68 A max
• Thermal Dissipation
  Maximum: 23 W (78 BTU/hr)
  Idle: 15 W (6

AUDIO OUTPUT

• Gain Adjustment Range
  –18 to +42 dB in 1 dB steps (plus Mute setting)
• Configuration
  1/4″ (6.35 mm): Transformer-coupled Balanced
  (Tip=audio, Ring=no audio,Sleeve=ground)
  XLR: Transformer-Coupled Balanced
  (1=ground, 2=audio +, 3=audio –)
• Impedance Typical, XLR Line Out
  100 Ω
• Full Scale Output
  200 kΩ load
  1/4″ (6.35 mm): +8 dBV
  XLR (LINE setting): +18 dBV
  XLR (MIC setting): –12 dBV
• Mic/Line Switch
  30 dB pad
• Phantom Power Protection
  Yes

NETWORKING

• Network Interface
  10/100 Mbps, 1 Gbps, Dante Digital Audio
• Network Addressing Capability
  DHCP or Manual IP address
• Maximum Cable Length
  100 m (328 ft)

CASCADE OUTPUT

• Connector Type
  BNC
  Note: For connection of one additional
  receiver in the same band
• Configuration
  Unbalanced, passive
• Impedance
  50 Ω
• Insertion Loss
  0 dB, typical

RF INPUT

• Spurious Rejection
  >80 dB, typical
• Connector Type
  BNC
• Impedance
  50 Ω
• Bias Voltage
  12-13.5 VDC, 150 mA maximium, per
  antenna, switchable on/off
• RF Carrier Frequency
  Range
  Model-Dependent
  AD4D=A: 470–636 MHz
  AD4D=B: 606–810 MHz
  AD4D=C: 750–960 MHz

B87A SPECIFICATIONS

• Gain Offset Range
  –12 to 21 dB (in 1 dB steps)
• Battery Type
  SB900A Rechargeable Li-Ion
  or LR6 AA batteries 1.5 V
• Battery Run Time @10 mW
  Shure SB900A: up to 9 hours
  Alkaline: up to 8 hours
• Dimensions (L × D)
  10.1 × 2.0 in
  (256 × 51 mm)
• Weight
  12.0 oz (340 g)
  wihtout batteries
• Housing
  Cast Aluminum

AUDIO INPUT

• Configuration
  Unbalanced
• Maximum Input Level 1 kHz at 1% THD
  145 dB SPL, typical (SM58®)
  Note: dependent on microphone type

RF OUTPUT

• Antenna Type
  1/4 Wave
• Occupied Bandwidth
  <200 kHz
• Modulation Type
  Shure Axient Digital Propietary
• Power
  2 mW, 10 mW, 35 mW
  Varies by region. See Frequency Range and
  Output Power Table.
• Specific Absorption Rate (SAR)
  <0.19 W/kg