Spec Sheet

Transceiver Unit
Size 1.3"H x 2.0"W x .95"D
Power Requirements NONE REQUIRED
Input 1 vpp composite video
Monochrome or Color
Output Balanced low voltage current loop
System (2 transceivers required)
Video Format RS170, NTSC, PAL, SECAM,
CCIR (Color or B/W)
Video Input 1 Vpp composite video
Monochrome or Color
Operating Frequency DC to 10 MHz
Common Mode >60 dB typ.
Rejection
Wire Size 12 to 26 AWG Unshielded
Twisted Pair
UTP Category Unshielded Category 2 or better
Temperature Range -40 degrees C to +85 degrees C
Humidity Range 0 to 98%, non-condensing
Transient Immunity 6,000 V 1.2uS x 50 uS
per ANSI / IEE 587 C62.41 B3
3,000 A 8uS x 20 uS
when ground screw terminal is
connected to earth-ground
Enclosure Material Black ABS Flame Retardant
Plastic
Twisted Pair Screw Terminals
Connection
Ordering Information
PART DESCRIPTION
VB37F
Female BNC Connector for up to 1,000 feet
VB37M Male BNC Connector for up to 1,000 feet
VB39F Female BNC w/Surge Protection for up to 1,000 feet
VB39M Male BNC w/Surge Protection for up to 1,000 feet
SYSTEM COMPONENTS
Two VB37 or VB39 devices M or F in any combination are
required for transmission over a single UTP.
Wire and Cable Recommendations
The VB37 and VB39 are recommended for use with un-
shielded twisted pair (UTP) wiring. The systems will operate
over wire gauges from 26AWG through 12AWG. Category 2,
3, 4 or 5 cable may be used. Individually shielded pairs should
be avoided, as they drastically reduce the operating range of
the systems. Multi-pair cable with an overall shield is accept-
able. Video can be operated in the same communication cable
coexistent with telephone, computer, control signals, power
voltages and other video signals. While video may be routed
through telephone punch down block terminals, any bridge-
taps, also called T-taps and any resistive, capacitive or induc-
tive devices MUST BE removed from the pair. For more
specific information regarding wire types, gauges and proper
installation techniques, please call 800-528-4343 for technical
assistance. More information is also available on the CCTV
System Design Guide Sheet.
Twisted Sender is a trademark of Northern Information Technology, Inc.
Specifications subject to change without notice.
© Copyright 2003 Northern Information Technology, Inc.
TECHNICAL SPECIFICATION
Twisted Pair Cable
CAT 2, 3, 4 or 5
1,000 feet Max.
Coax
Cable
Camera
Monitor
Coax
Cable
VB39*
VB39*
Twisted Pair Cable
CAT 2, 3, 4 or 5
1,000 feet Max.
Camera/PTZ Unit
Monitor
VB39*
VB39*
Over-the-Coax
Transmitter/Controller
Over-the-Coax
Receiver
*omit ground if using VB37