BALUN, 75-120 OHM,
Coaxial to 3P IDC CONNECTOR
PART No: E100XXS
1.0 Features
1.1
Allows unbalanced
Coaxial type 75 ohm equipment to be cost effectively connected to industry
standard 120 ohm shield twisted pair for station wiring.
1.2
Use of Baluns avoid more costly
and space consuming 75 ohm hardware for patching at the Digital Distribution
Frame (DDF).
1.3
Minimal loss, distortion and reflection
as a unit.
1.4
Rugged construction giving reliable service.
1.5
Low cost and optimal size because of straight
forward design with minimal component count. Standard Insulation
Displacement Connection (IDC) with cable anchorage.
1.6
Meets CCITT recommendation G703.
1.7
Allows standard 15 mm U-Link to be fitted
when used on a digital distribution frame.
1.8
Fire retardant and halogen free materials
used.
2.0
Electrical
Characteristics and Performance
2.1
Characteristic Impedance:
The value of the impedance match is 75
+ 3 ohms resistive to 120 + 4 ohms resistive when measured at
1.024 MHz.
2.2
Insertion Loss:
2.2.1
Insertion
loss of the balun at 1.024 is less than 0.25 dB.
2.2.2
The insertion loss is less than 0.4
dB in the range 0.1 MHz to 10 MHz.
2.3
Crosstalk Performance:
Crosstalk between any two baluns mounted on a DDF strip is better than 80 dB
in the range of 0.1 MHz to 10 MHz.
2.4
Pulse Shape:
The pulse shape conforms to CCITT Rec. G.703 (for 2.048 M/bits limits).
Low distortion is achievable when used with a complex load consisting of a 50 uH inductance and the respective resistive
load. (The Q value for this inductive and resistive load combination is 250 at a frequency
of 1.024 KHz).
2.5
Return Loss:
The return loss is better than 24 dB
in the frequency range of 1 MHz to 3 MHz in both directions of transmission with
unused port terminated with their respective impedances.
2.6
Earth Requirements:
2.6.1
Provision is made on the balun
to allow for the screens of the coaxial cable and twisted pair to be
connected if required.
2.6.2
For multi-balun systems the
individual earths from each balun are able to be connected or disconnected.
3.0
PHYSICAL CHARACTERISTICS:
3.1
Size:
Compact
design and to fit inside a 15 x 17.5 x
40mm volume for equipment mounting.
3.2
Coaxial Side:
3.2.1
Designed for
coupling directly to equipment or DDF installation.
3.2.2
The male
and female coaxial connectors are designed to give in excess of 500 connect/disconnect cycles.
3.3
Balanced Side:
3.3.1
The 120 ohm interface connector is
designed to accept termination of single conductors with diameter in the range 0.40mm to
0.60mm (AWG 24 to 26).
3.3.2
The IDC is
designed to remain fully operative and intact after 200 connect/reconnect cycles.
3.3.3
IDC Termination
through use of standard termination tools which are readily
available
3.3.4
Simple cable anchorage method
integral with the balun is achievable by passing the cable through a slit
thus anchorage of cable can be done before or after termination unlike
other brands.
3.4
Cover:
3.4.1
The cover is manufactured from a
halogen free, fire retardant material and protect against extraneous electrical
connection.
3.4.2
The cover clearly identifies the
"A" wire, "B" wire and "G" for ground on the 120 ohm side.
3.5
Quality:
All metal parts are free from burrs
and sharp corners. The workmanship, manufacture and plating of all parts conform to
Telecommunication Industry Standards. The standards used in manufacture are in accordance
with ISO 9002 (AS 3902) requirements.
Standard Schematic Drawing
for Krone Balun
Advantages of EQL
Balun
A –Slit in cable anchor allows cable tobe inserted after termination.
B
–Offset IDC allows cable to bepositionedbetween baluns onDDF as
required
Note:
Specifications typical only and subject to change without notice.
