GE Security B7720AT-EST, B7720AT-RST Specsheet
GE
Fiber Optic
Security
Overview
Single-Channel Audio, high performance, broadcast grade, fiber
transmission systems support one-way High Quality Audio (HQA).
The all-digital processing platform features 24-bit audio processing.
B720A models feature multimode operation, while B7720A models
operate over single mode fiber.
Digital Audio Processing
Digital processing of the audio signal along with an audio signal-tonoise ratio of >70 dB allows the audio output to drive balanced or
unbalanced loads and maintain constant audio levels.
Built-in Diagnostics
Built-in system diagnostics include LED displays that monitor input
or output audio levels and status of the optical signal.
Audio Transmitters and Receivers
Standard Features
One-way audio transmission over one fiber
•
Single and multimode models available
•
24-bit audio processing
•
20 Hz to 15 kHz frequency response
•
Balanced or unbalanced audio
•
13 dB optical budget
•
70 dB audio SNR
•
33 kHz audio sampling rate
•
THD < 0.01%
•
Single-Channel
Audio
B720A and B7720A
GE
Security
U.S.
T (561) 998-6100
T 888-GE-SECURITY
888-(437-3287)
F 561 998 6224
Canada
T 519 376 2430
F 519 376 7258
Asia
T 852-2907-8108
F 852-2142-5063
Australia
T 61-3-9239-1200
F 61-3-9239-1299
Europe
T
32-2-719-9847
F
32-2-719-9846
Latin America
T 305-593-4301
F 305-593-4300
www.gesecurity.com
© 2005 General Electric Company
All Rights Reserved
Related Diagram
Audio In Audio Out
Transmitter
Receiver
Specifications
Audio B720A (Multimode) B7720A (Single Mode)
Channels 1 simplex
Input Signal Level 6 dBu balanced (max.), 0 dBu unbalanced
Input Impedance 30k ohms (balanced or unbalanced)
Frequency Response 20 Hz to 15 KHz
Sampling Rate 33 kHz
Output Signal Level 6 dBu balanced (max.), 0 dBu unbalanced
Output Impedance <30 ohms unbalanced, <60 ohms balanced
Signal-to-Noise Ratio 70 dB
Total Harmonic Distortion <0.01%
Optical
Mode Multimode Single Mode
Optical Budget 13 db
Emitter
Wavelength 850 or 1300 nm
Operating Distance Up to 2.2 mi (3.2 km)
Modulation Type Digital
Gain Control Optical Automatic Gain Control
Electrical
Input Power, Standalone Units 24 VAC or 13.5 VDC regulated
Input Power, Rack Units 13.5 VDC regulated
Current Requirement 250 mA
Power Consumption 3.5 W
Power Factor 2 (rack units only)
Protection Solid-state short circuit protection
Optional Power Supply Model 613P
Environmental
Operating Temperature -40 to 167 °F (-40 to 75 °C)
Maximum Humidity 95% relative, noncondensing
Mechanical
Dimensions (LWD), Standalone
Units
Dimensions, Rack Units 1 slot (1.0”)
Weight Standalone 1.2 lbs (0.54 kg); Rack 0.6 lbs (0.27 kg)
Construction Polycarbonate (standalone); Aluminum (rack)
∗
LED Laser
(depending on model)
∗∗
(depending on model)
5.0” x 4.8” x 1.5” (127 x 122 x 38 mm)
1310 or 1550 nm
(depending on model)
Up tp 27 mi (43 km)
(depending on model)
Optical Fiber
Ordering Information
Use the Configurators below to select the options available for these products.
∗ Optical Budget based on 62.5 μm fiber, for 50/125 μm fiber subtract 3 dB.
∗∗ Operating distance is approximate and assumes best fiber. It will be affected by the type and number of splices in the fiber. Refer to update No. TB00-005, which can be found at www.gesecurity.com
As a company of innovation, GE Security reserves the right to change product specifications without notice. For the latest product specifications, visit GESecurity online at www.GESecurity.com or contact your GE Security sales representative.
B720A-2006-09-2
imagination at work
Loading...