H
Plastic Optical Fiber and
HCS
®
Fiber Cable and
Connectors for Versatile Link
Technical Data
HFBR-RXXYYY Series (POF)
HFBR-EXXYYY Series (POF)
HFBR-HXXYYY Series (HCS)
HFBR-VXXYYY Series (HCS)
Features
• Compatible with HP Versatile
Link Family of Connectors
and Fiber Optic Components
• 1 mm Diameter Plastic
Optical Fiber (POF) in Two
Grades: Low Cost Standard
POF with 0.22 dB/m Typical
Attenuation, or High
Performance Extra Low Loss
POF with 0.19 dB/m Typical
Attenuation
• 200
µ
m Diameter Hard Clad
Silica (HCS
®
) Fiber with
8 dB/km Typical Attenua-
tion, Riser or Plenum Rated
Jackets, Superior
Mechanical Strength
• Reduction of Lightning and
Voltage Transient
Susceptibility
• High Voltage Isolation
Cable Description
The HFBR-R/EXXYYY series of
plastic fiber optic cables are
constructed of a single step-index
fiber sheathed in a black poly-
ethylene jacket. The duplex fiber
consists of two simplex fibers
joined with a zipcord web.
Standard attenuation and extra
low loss POF cables are identical
except for attenuation
specifications.
The HFBR-H/VXXYYYY series of
hard clad silica fiber optic cables
are constructed of a single step
index pure silica HCS
®
fiber
sheathed in a blue polyvinyl
chloride jacket. The duplex fiber
consists of two simplex fibers
joined with a zipcord web. Riser
and Plenum rated HCS
®
fiber
cables are identical except for
jacket materials.
Polyethylene jackets on all plastic
fiber cables comply with UL VW-1
flame retardant specifications.
1000
100
dB/km
POF
10
HCS
Applications
• Industrial Data Links for
Factory Automation and
Plant Control
• Intra-System Links; Board-
to-Board, Rack-to-Rack
• Telecommunications
Switching Systems
• Computer-to-Peripheral Data
Links, PC Bus Extension
• Proprietary LANs
• Digitized Video
• Medical Instruments
1
620
640
660
680
700
WAVELENGTH – nm
Typical POF and HCS Attenuation
PVC jackets on HCS
®
cables are
either UL Riser rated or UL
Plenum rated.
All series of cables are available in
unconnectored or connectored
options. Refer to the Ordering
Guide for part number
information.
HCS
®
is a registered trademark of SpecTran Corporation.
5963-3711E
3-49
Plastic Optical Fiber Specifications: HFBR-R/EXXYYY
Absolute Maximum Ratings
Parameter
Storage and Operating Temperature
Recommended Operating Temperature
Installation Temperature
Short Term Tensile
Single Channel
Force
Dual Channel
Short Term Bend Radius
Long Term Bend Radius
Long Term Tensile Load
Flexing
Symbol
T
S,O
T
O
T
I
F
T
F
T
r
r
F
T
Min.
-55
-40
-20
Max.
+85
+85
+70
50
100
Unit
°C
°C
°C
N
N
mm
mm
N
Cycles
Note
1
2
3, 4
25
35
1
1000
4
Mechanical/Optical Characteristics, T
A
= -40 to +85
°
C unless otherwise specified
Parameter
Cable
Standard Cable,
Attenuation
Type "R"
Extra Low Loss,
Type "E"
Reference
Standard Cable,
Attenuation
Type "R"
Extra Low Loss,
Type "E"
Numerical Aperture
Diameter, Core and Cladding
Diameter, Jacket
Propagation Delay Constant
Mass per Unit Length/Channel
Cable Leakage Current
Refractive Index Core
Cladding
Symbol
α
O
Min.
0.15
0.15
α
R
0.12
0.12
NA
D
C
D
J
l/v
I
L
n
0.46
0.94
2.13
Typ.
[5]
0.22
0.19
0.19
0.16
0.47
1.00
2.20
5.0
5.3
12
1.492
1.417
Max.
0.27
0.23
0.24
0.19
0.50
1.06
2.27
dB/m
Unit
dB/m
Condition
Source is HFBR-15XX
(660 mm LED, 0.5 NA)
= 50 meters
Source is 650 nm,
0.5 NA monochrometer,
= 50 meters
Note 7, Figure 1
>2 meters
Simplex Cable
Note 6
Without Connectors
50 kV, = 0.3 meters
mm
mm
ns/m
g/m
nA
Notes:
1. Installation temperature is the range over which the cable can be bent and pulled
without damage. Below -20°C the cable becomes brittle and should not be subjected to
mechanical stress.
2. Short Term Tensile Force is for less than 30 minutes.
3. Short Term Bend Radius is for less than 1 hour nonoperating.
4. 90° bend on 25 mm radius mandrel. Bend radius is the radius of the mandrel around
which the cable is bent.
5. Typical data are at 25°C.
6. Propagation delay constant is the reciprocal of the group velocity for propagation delay
of optical power. Group velocity is v=c/n where c is the velocity of light in free space
(3xl0
8
m/s) and n is the effective core index of refraction.
7. Note that
α
R
rises at the rate of about 0.0067 dB/°C, where the thermal rise refers to
the LED temperature changes above 25°C. Please refer to Figure 1 which shows the
typical plastic optical fiber attenuation versus wavelength at 25°C.
500
α
R
– ATTENUATION – dB/km
400
300
200
100
620
640
660
680
700
λ
– WAVELENGTH – nm
Figure 1. Typical POF Attenuation vs.
Wavelength.
3-50
Plastic Fiber Connector
Styles
Connector Description
Four connector styles are available
for termination of plastic optical
fiber: simplex, simplex latching,
duplex and duplex latching. All
connectors provide a snap-in
action when mated to Versatile
Link components. Simplex
connectors are color coded to
facilitate identification of trans-
mitter and receiver connections.
Duplex connectors are keyed so
that proper orientation is ensured
during insertion. If the POF cable/
connector will be used at extreme
operating temperatures or
experience frequent and wide
temperature cycling effects, the
cable/connector attachment can
be strengthened with an RTV
adhesive (see Plastic Connector-
ing Instructions for more detail).
SIMPLEX CONNECTOR STYLES
HFBR-4501/4511/4501B — Simplex
The simplex latching connector is
designed for rugged applications
requiring a greater retention force
— 80 Newtons ( 18 lb.) — than
provided by a simplex nonlatching
connector. When inserting the
simplex latching connector into a
module, the connector latch
mechanism should be aligned
with the top surface of the
horizontal modules, or with the
tall vertical side of the vertical
modules. Misalignment of an
inserted latching connector into
either module will not result in a
positive latch. The connector is
released by depressing the rear
section of the connector lever,
and then pulling the connector
assembly away from the module
housing.
The simplex latching connector is
available in gray (HFBR-4503),
blue (HFBR-4513), or black
(HFBR-4503B).
DUPLEX CONNECTOR STYLES
HFBR-4506/4506B — Duplex
HFBR-4516/4516B — Duplex Latching
,
HFBR-4526
The duplex latching connector is
designed for rugged applications
requiring greater retention force
than the nonlatching duplex con-
nector. When inserting the duplex
latching connector into a module,
the connector latch mechanism
should be aligned with the top
surface of the dual combination of
horizontal or vertical Versatile
Link components. The duplex
latching connector is available in
gray (HFBR-4516) or black
(HFBR-4516B).
Feedthrough/Splice
HFBR-4505/4515/4506B Bulkhead
Adapter
,
, HFBR-4525
HFBR-4526
The simplex connector provides a
quick and stable connection for
applications that require a
component-to-connector retention
force of 8 Newtons (1.8 lb.).
These connectors are available in
gray (HFBR-4501), blue (HFBR-
4511), or black (HFBR-4501B).
HFBR-4503/4513/4503B — Simplex
Latching
,
HFBR-4525
Duplex connectors provide con-
venient duplex cable termination
and are keyed to prevent incorrect
insertion into duplex configured
modules. The duplex connector is
compatible with dual combina-
tions of horizontal or vertical
Versatile Link components (e.g.,
two horizontal transmitters, two
vertical receivers, a horizontal
transmitter with a horizontal
receiver, etc.). The duplex non-
latching connector is available in
parchment, off-white (HFBR-
4506) or black (HFBR-4506B).
The HFBR-4505/4515 adapter
mates two simplex connectors for
panel/bulkhead feedthrough of
HFBR-4501/4511 terminated
plastic fiber cable. Maximum
panel thickness is 4.1 mm (0.16
inch). This adapter can serve as a
cable in-line splice using two
simplex connectors. The adapters
are available in gray (HFBR-
4505), blue (HFBR-4515), and
black (HFBR-4505B). This
adapter is currently not compat-
ible with POF duplex, POF
simplex latching, or HCS
connectors.
3-51
Plastic Optical Fiber Connector Absolute Maximum Ratings
Parameter
Storage and Operating Temperature
Recommended Operating Temperature
Installation Temperature
Nut Torque
HFBR-4505/4515 Adapter
Symbol
T
S,O
T
O
T
l
T
N
Min.
-40
-40
0
Max.
85
85
70
0.7
100
Unit
°C
°C
°C
N-m
OzF-in.
Note
1
1
1
2
Notes:
1. Storage and Operating Temperatures refer to the ranges over which the connectors can be used when not subjected to mechanical
stress. Installation Temperature refers to the ranges over which connectors may be installed onto the fiber and over which connectors
can be connected and disconnected from transmitter and receiver modules.
2. Recommended nut torque is 0.57 N-m.
Plastic Optical Fiber Connector Mechanical/Optical Characteristics
T
A
= -40 to +85°C, Unless Otherwise Specified
Parameter
Retention Force,
Connector to
Versatile Link
Transmitters and
Receivers
Part Number
Symbol Min. Typ.
[1]
Max.
Simplex,
F
R-C
7
8
HFBR-4501/4511
3
Simplex Latching,
47
80
HFBR-4503/4513
11
Duplex,
7
12
HFBR-4506
4
Duplex Latching,
50
80
HFBR-4516
15
Simplex,
F
T
8.5
22
HFBR-4501/4511
Simplex Latching,
8.5
22
HFBR-4503/4513
Duplex, HFBR-4506
14
35
Duplex Latching,
14
35
HFBR-4516
HFBR-4505/4515 with
α
CC
0.7
1.5
2.8
HFBR-4501/4511
HFBR-4505/4515 with
F
R-B
7
8
HFBR-4501/4511
Simplex,
F
I
8
30
HFBR-4501/4511
Simplex Latching,
16
35
HFBR-4503/4513
Duplex, HFBR-4506
13
46
Duplex Latching
22
51
HFBR-4516
Units
N
Temp.
°
C Note
+25
2
-40 to +85
+25
-40 to +85
+25
-40 to +85
+25
-40 to +85
3
Tensile Force,
Connector to Cable
N
Adapter Connector
to Connector Loss
Retention Force
Connector to Adapter
Insertion Force,
Connector to
Versatile Link
Transmitters and
Receivers
dB
N
N
25
4, 5
6
Notes:
1. Typical data are at +25°C.
2. No perceivable reduction in retention force was observed after 2000 insertions. Retention force of non-latching connectors is lower at
elevated temperatures. Latching connectors are recommended for applications where a high retention force at high temperatures is
desired.
3. For applications where frequent temperature cycling over temperature extremes is expected, please contact Hewlett-Packard for
alternate connectoring techniques.
4. Minimum and maximum limit for
α
CC
for 0°C to +70°C temperature range. Typical value of
α
CC
is at +25°C.
5. Factory polish or field polish per recommended procedure.
6. Destructive insertion force was typically at 178 N (40 lb.).
3-52
Step-by-Step Plastic
Cable Connectoring
Instructions
The following step-by-step guide
describes how to terminate plastic
fiber optic cable. It is ideal for
both field and factory installation.
Connectors can be easily installed
on cable ends with wire strippers,
cutters and a crimping tool.
Finishing the cable is accom-
plished with the Hewlett-Packard
HFBR-4593 Polishing Kit, consist-
ing of a Polishing Fixture, 600
grit abrasive paper and 3
µm
pink
lapping film (3M Company, OC3-
14). The connector can be used
immediately after polishing.
Materials needed for plastic fiber
termination are:
1. Hewlett-Packard Plastic Optical
Fiber Cable (Example: HFBR-
RUS500, HFBR-RUD500,
HFBR-EUS500, or HFBR-
EUD500)
2. Industrial Razor Blade or Wire
Cutters
3. 16 Gauge Latching Wire
Strippers (Example: Ideal
Stripmaster
TM
type 45-092).
4. HFBR-4597 Crimping Tool
5. HFBR-4593 Polishing Kit
6. One of the following
connectors:
a) HFBR-4501/4503 Gray
Simplex/Simplex Latching
Connector and HFBR-4525
Simplex Crimp Ring
b) HFBR-4511/4513 Blue
Simplex/Simplex Latching
Connector and HFBR-4525
Simplex Crimp Ring
c) HFBR-4506 Parchment (off-
white) Duplex Connector
and HFBR-4526 Duplex
Crimp Ring
d) HFBR-4516 Gray Latching
Duplex Connector and
HFBR-4526 Duplex Crimp
Ring
Step 1
The zip cord structure of the
duplex cable permits easy
separation of the channels. The
channels should be separated
approximately 50 mm (2.0 in)
back from the ends to permit
connectoring and polishing.
After cutting the cable to the
desired length, strip off approxi-
mately 7 mm (0.3 in.) of the outer
jacket with the 16 gauge wire
strippers. Excess webbing on the
duplex cable may have to be
trimmed to allow the simplex or
simplex latching connector to
slide over the cable.
When using the duplex connector
and duplex cable, the separated
duplex cable must be stripped to
equal lengths on each cable. This
allows easy and proper seating of
the cable into the duplex
connector.
Step 2
Place the crimp ring and connec-
tor over the end of the cable; the
fiber should protrude about 3 mm
(0.12 in.) through the end of the
connector. Carefully position the
ring so that it is entirely on the
connector with the rim of the
crimp ring flush with the connec-
tor, leaving a small space between
the crimp ring and the flange.
Then crimp the ring in place with
the crimping tool. One crimp tool
is used for all POF connector
crimping requirements.
For applications with extreme
temperature operation or frequent
temperature cycling, improved
connector to cable attachment
can be achieved with the use of an
RTV (GE Company, RTV-128 or
Dow Corning 3145-RTV)
adhesive. The RTV is placed into
the connector prior to insertion of
the fiber and the fiber is crimped
normally. The connector can be
polished after the RTV has cured
and is then ready for use.
Note:
By convention, place the
gray connector on the trans-
mitter cable end and the blue
connector on the receiver cable
end to maintain color coding
(different color connectors are
mechanically identical).
Simplex connector crimp rings
cannot be used with duplex con-
nectors and duplex connector
crimp rings cannot be used
with simplex connectors because
of size differences. The simplex
crimp has a dull luster appear-
ance; the duplex ring is glossy
and has a thinner wall.
3-53
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