Force 2807 PDS Montageanleitung

825 Park Street, Christiansburg, VA 24073 • USA (800) 732-5252 • TEL (540) 382-0462 • FAX (540) 381-0392 • [email protected]om • www.forceinc.com

Model 2807 PDS/PNS Mini-Node

CATV Receiver

Installation Guide and User Manual

IOM2807

Revision 2.2, March 2006

Laser Safety Warning

The optical emissions from the return path module optical output and connected optical fiber are laser-based

and may present eye hazards. Follow all safety precautions.

Technical Support

If you encounter any kind of problem after reading this manual, contact your local distributor or a Force, Inc.

Applications Engineer. To reach technical support::

On the Web: http://www.forceinc.com

By Phone (Monday through Friday 8:00 am to 5:00 pm EST): USA (800) 732-5252

TEL (540) 382-0462

By Fax: (540) 381-0392

By Email: csr-sales@forceinc.com

Model 2807 PDS/PNS Mini-node CATV Receiver User Manual

IOM2807 Revision 2.2 2

Contents

Laser Safety Warning 1

Technical Support 1

Product Specifications 3

FCC Notice 3

Optical and Video Characteristics 3

Electrical Characteristics 4

Environmental Characteristics 4

Physical Characteristics 4

Specification Notes 4

CNR vs. Receiver Optical Input at 110 Channels 4

Installation and Operation 6

General Installation Instructions 6

Unit Physical Description 7

Model 2807 Mini-node CATV Receiver 7

Module Placement 7

Items Provided 8

Items Required 8

Inspection 8

Connections 8

Operation of the LCD Display 9

Control Button Operation 10

RF Equalization Update Mode 10

RF Attenuation Adjust Mode 11

Optical Status LED 11

Measuring RF Input Levels at the Return Path 11

Safety Precautions 11

Power-up and Operation 11

Performance Verification 12

Troubleshooting 12

Cleaning 13

Warranty and Return Policy 14

Warranty 14

Force Obligations 14

Exclusions 14

Product Return Policy 14

Products Returned for Credit - Non Distributor 15

Products Returned for Repair or Replacement 15

Active Product Under Warranty 15

Obsolete Product Under Warranty 15

Active Out of Warranty 15

Obsolete Product Out of Warranty 16

Receiving an RMA for Returns 16

IOM2807 Revision 2.2 3

Model 2807 PDS/PNS Mini-node CATV Receiver User Manual

Product Specifications

FCC Notice

The Model 2807 has been tested and found to comply with the limits for a Class A digital device, pursuant to

Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interfer-

ence when the equipment is operated in a commercial environment. This equipment generates, uses, and can

radiate radio frequency energy and, if not installed and used in accordance with the instructions in this manual,

may cause harmful interference, in which case the user must correct the interference at the user’s own expense.

Compliance with applicable regulations depends on the use of shielded I/O cables. The user is responsible for

procuring the appropriate cables.

Optical and Video Characteristics

@ 25°C, SM Fiber (Note 9) Min. Typ. Max. Units Notes

CATV Receiver

Operating Wavelength 1290 1310 1330 nm

Operating Wavelength 1490 1510 1610 nm

Optical Input Power -8.0 +4.5 dBm

Channel Loading 110 Channels

Bandwidth 50 860 MHz 1

Required Fiber Bandwidth 2,000 MHz

Output Impedance 75 Ohms

RF Output Level +38 dBmV 2

RF Equalization 0+10dB3

Output Return Loss 16 dB

Composite Second Order (CSO) -63 dBc

Composite Triple Beat (CTB) -66 dBc

Carrier-to-Noise Ratio (CNR) See Figure 1 4

Backreflection Tolerance -50 dB 5

Return Path Modules

Operating Wavelength 1280 1310 1340 nm

Operating Wavelength 1490 1550 1610 nm

RF Input Power 23 28 33 dBmV

Optical Power (FP Laser) 1.5 mW

Optical Power (DFB Laser) 3.0 mW

Bandwidth 542MHz

IOM2807 Revision 2.2 4

Model 2807 PDS/PNS Mini-node CATV Receiver User Manual

Electrical Characteristics

Environmental Characteristics

Physical Characteristics

Specification Notes

1) The receiver bandwidth is 50-860 MHz when a return path transmitter is installed.

2) The 2807 Mini-node contains a user-programmable digital RF attenuator which is adjustable from 0 dB to

31 dB attenuation. The user can adjust this RF attenuator to achieve +38 dBmV per channel RF output

over the full rated optical input power. See page 9 for LCD operation details.

3) The 2807 Mini-node contains a user-programmable RF equalization function. The user has the choice of

flat response (no tilt) or +10 dB tilt via the digital control panel. See page 9 for LCD operation details.

4) Figure 1 shows the CNR versus received optical input power and number of channels. The horizontal axis

is the amount of optical light that reaches the receiver. (It is not the loss between the transmitter and

receiver.) The vertical axis shows the CNR.

Figure 1 CNR vs. Receiver Optical Input at 110 Channels

The link CNR is usually specified for a received optical power of -3 dBm or more. Thus, a 2804TK-SCAP/

12 optical transmitter, with an optical output of +12 dBm, will provide excellent performance with up to

15 dB of optical loss at full channel loading. If lower channel loading is used, then the link can operate at

higher optical losses and still provide exceptional CNR.

A number of curves are plotted; the top curve is the typical result when only 5 channels are transmitted

through the link. It can be seen that very high CNR results and in fact the output is quite usable with

receiver optical inputs as low as -12 dBm, corresponding to 24 dB of optical loss! As the channel loading

gets higher, the maximum achievable CNR drops.

Min. Typ. Max. Units Notes

Power Supply Voltage +10 +12 +15 VDC 6

Power Dissipation 10 Watts

Min. Typ. Max. Units Notes

Operating Temperature Range 0+50°C7

Storage Temperature Range -20 +70 °C

Humidity (RH non-condensing) 090%8

Min. Typ. Max. Units Notes

Weight 1.0 lbs.

0.45 kg

Physical Dimensions 8.45 x 2.95 x 1.12 in.

215 x 75 x 29 mm

Model 2807 PDS/PNS Mini-node CATV Receiver User Manual

IOM2807 Revision 2.2 5

5) This product must be used only with APC type optical connectors or fusion spliced connections. There is

some folklore which suggests that the only critical backreflection is the one closest to the transmitter. Our

experience does not support that view. We find that all backreflections matter, regardless of their distance

from the transmitter.

6) The receiver is powered by the Force, Inc. Model PS200 AC adapter. See TB043 for complete specifica-

tions.

7) Most parameters are relatively unaffected by varying temperature. A moving air environment is recom-

mended at ambient temperatures above +35°C.

8) Humidity is RH non-condensing.

9) The Model 2807 PDS/PNS Mini-node receiver is optimized for single-mode operation only.

IOM2807 Revision 2.2 6

Model 2807 PDS/PNS Mini-node CATV Receiver User Manual

Installation and

Operation

General Installation Instructions

The installation of these units is very simple. There are no special unpacking instructions, except that care

should be taken to handle the units gently. Fiber optic links are sensitive electronics devices that should be

handled with care. Like most electronics, they are susceptible to ESD. Proper ESD techniques such as wearing

a wrist grounding strap, should be observed at all times when handling a unit. The units should not be dropped.

No assembly is required.

Do not install the equipment near sources of excessive heat, such as furnace outlets or above heat producing

units, such as large power supplies and tube-type equipment. Observe temperature and relative humidity

requirements specified on page 4.

Model 2807 PDS/PNS Mini-node CATV Receiver User Manual

IOM2807 Revision 2.2 7

Unit Physical Description

Figure 2 Model 2807 Mini-node CATV Receiver

(Dimensions in parentheses are in millimeters.)

Module Placement

Units may be mounted in any orientation on most flat, dry surfaces. Secure panhead screws through mounting

holes provided at the base of the module. If the unit is placed in a location where temperatures may exceed

38°C (100°F), a good heat sink should be secured. The use of silicone thermal pads is recommended between

the module and the plate to maximize heat transfer. Units must have their chassis connected to a good earth

ground.

A. Optical Status (Tri-colored LED): When lit green, indicates the unit

is receiving the optimum optical input power. If the optical power

falls below optimum, the LED will turn yellow. If the optical power

rises above optimum, the LED will turn red.

B. LCD Display: Displays the receiver optical input level, RF attenu-

ator setting, and equalization setting. The RF levels may be ad-

justed by the user via the Up/Down/Select Buttons (items C and

D). See page 9 for details.

C. Up/Down Buttons: Allows the user to adjust the RF attenuator and

equalization settings.

D. Select Button: Selects either RF attenuator or equalization setting

for adjustment.

E. Unit Serial Number: The unit serial number is a code that identifies

the start date of the product warranty.

F. Optical Input (SC/APC std., FC/APC Option): Optical Input to the

receiver.

G. Optical Ouptut (SC/APC std., FC/APC Option): Optional optical

output from the return path module, when installed.

H. Power (4-pin Weidmuller Connector): Supplies power to the re-

ceiver. See page 8 for pin connections.

I. RF Output (F Connector): RF output from the receiver.

J. RF Test -20 dB (F Connector): Allows the user to measure the re-

ceiver RF output levels 20 dB down from the primary output.

K. RF Return Test -20 dB (F Connector): Allows the user to measure

the return path RF signal level 20 dB down from the return path

signal level.

Warning

Invisible laser radiation emitted from the optical output con-

nector and the connector that attaches to the receiver. Avoid

direct eye contact with the beam.

IOM2807 Revision 2.2 8

Model 2807 PDS/PNS Mini-node CATV Receiver User Manual

Items Provided

The following is a list of items provided with each Model 2807:

Items Required

Inspection

Remove the unit from its shipping container. Any in-shipment damage that may have occurred should be visu-

ally apparent. Look for bent or damaged connectors or mounting brackets. Claims for damage incurred in

shipment should be made directly to the transportation company in accordance with their instructions. Save

the shipping cartons until installation and performance verification are completed.

Connections

Qty. Mfr. P/N Description

AR Force, Inc. 2807NX-SFSP PDS/PNS Mini-node CATV Receiver, SM, 1310/1550 nm, SC/

APC Standard, FC/APC Optional

1 per connector Any Any Active Device Receptacle Caps for RF and Optical Connections

Qty. Mfr. P/N Description

AR Force, Inc. 2804T or

2805T

110 Ch. PDS Transmitter, SM, 1310 nm, SC/APC Std, FC option.

77Ch. PNS Transmitter, SM, 1310 nm, SC/APC Std., FC option.

1 per Rx Force, Inc. PS200 Rx Power Supply, +15 Volts, 950 mA DC Power Supply, 4-pin

Power Connector

4 per unit Any Any 6-32 Panhead Mounting Screws with Lock Washers and Nuts

(for Rx)

AR Any Any EIA 19” Grounded Equipment Rack (for Tx)

1 Any Any Straight Screwdriver

AR Any Any 9/125 µm Single-mode Fiber

Connector Name Connector Type Connector Function

Optical Input SC/APC or FC/APC* Optical input to the unit.

Optical Out

SC/APC or FC/APC* Optical output from the return path unit.

It is imperative that backreflections be controlled to very low levels. This product must be used

only with angle physical contact (APC) connectors.

Power 4-Pin Weidmuller Connector

Pin Function

1+12VoltsDC

2Ground

Optical Status Flag. This is an open

drain output that can sink up to 10

mA at +12 Volts. An external pull-up

resistor is required. This pin will be

pulled low when the optical input is

within optimal range

Optical Input Power Meter. This is an

analog voltage proportional to the

amount of light reaching the detec-

tor. The response is 1 Volt per mW of

input light.

RF Output F Connector RF output from the unit.

RF Test F Connector RF Test (-20 dB) output for receiver.

RF Return Test F Connector RF Test (-20 dB) output for return path module (if installed).

*Note: The FC/APC interface uses the “wide-key” standard. This means that the units are optimized for use with FC/APC

connectors that have a 2.14 mm wide alignment key. “Narrow-key” FC/APC connectors (2.02 mm) may be used but

will produce inferior results. Standard FC/PC connectors have a 2.36 mm wide key and cannot be plugged into to the

unit.

Model 2807 PDS/PNS Mini-node CATV Receiver User Manual

IOM2807 Revision 2.2 9

Operation of the LCD Display

The top of the 2807 Mini-node contains a 16 character x 2 line LCD display with backlight. This LCD is used to

display receiver optical input power, the current status of the internal RF equalizer and the status of the inter-

nal digital RF attenuator. The UP/DOWN/SELECT buttons are used to display and/or configure parameters

for the receiver. A typical display is shown below:

The RF equalizer text (EQ) has two possible states, TILT and FLAT.

The RF attenuator (ATN:) will display values ranging from 0-31 dB, for example:

As the UP button is pushed repeatedly, the attenuation will increase to 31 dB and the display will show MAX as

shown below:

As the DOWN button is pushed repeatedly, the attenuation will decrease to 0 dB and then the display will

show MIN as shown below:

DOWN

SELECT

RF CONTROL AND DISPLAY

EQ:TILT ATN:23dB

OPT IN: -3.2 dBm

DOWN

SELECT

RF CONTROL AND DISPLAY

EQ:TILT

ATN:23dB

OPT IN: -3.2 dBm

EQ:FLAT

ATN:23dB

OPT IN: -3.2 dBm

DOWN

SELECT

RF CONTROL AND DISPLAY

EQ:TILT

ATN:23dB

OPT IN: -3.2 dBm

DOWN

SELECT

RF CONTROL AND DISPLAY

EQ:TILT

ATN:MAX

OPT IN: -3.2 dBm

DOWN

SELECT

RF CONTROL AND DISPLAY

EQ:TILT

ATN:MIN

OPT IN: -3.2 dBm

IOM2807 Revision 2.2 10

Model 2807 PDS/PNS Mini-node CATV Receiver User Manual

The optical input text (OPT IN:) will show one of the following. If the optical input is greater than + 5.0 dBm,

the display will show OVLD!.

If the optical input is less than -12.0 dBm, the display will show LOW!.

If the light level is greater than or equal to -12.0 dBm and less than or equal to +5.0 dBm, the display will show

the actual input level with a resolution of 0.1 dB and an absolute accuracy of ±0.6 dBm.

When the display select button is pushed 3 times, the display will become that shown below. This is also the

temporary display at power up:

Control Button Operation

When no button has been pushed for 20 seconds or more, the display will revert to idle mode. In idle mode, the

UP and DOWN buttons are ignored. In order to change the setup of the Model 2807 Mini-node, push the

SELECT button. This will cause the unit to enter the equalization update mode. The EQ: text on the display

will flash. Hitting the SELECT button again will cause the unit to enter the attenuation update mode. The

ATN: text on the display will flash. Hitting the SELECT button additional times will cause the unit to toggle

between the equalization update mode and the attenuation update mode. Again, if no button is pressed for 20

seconds or more, the unit will revery to the idle display mode.

RF Equalization Update Mode

When the unit is in the equalization update mode (the EQ: text will be flashing once per second), the UP and

DOWN push buttons will toggle the unit between the FLAT and TILT modes. In FLAT mode, the RF output

will be flat versus frequency (assuming that the RF into the optical transmitter was flat). In the TILT mode,

the RF output will be tilted upward by 10 dB over the full receiver bandwidth (again, assuming that the RF

into the optical transmitter was flat).

DOWN

SELECT

RF CONTROL AND DISPLAY

EQ:TILT ATN:23dB

OPT IN: OVLD!

OVLD!

DOWN

SELECT

RF CONTROL AND DISPLAY

FORCE, INC. 2807

Ver.2.03

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