Olson Technology OTPN-MDN-870 User Manual

OTPN-MDN-870

Fiber Optic Mini Digital Node

54 to 870MHz Forward Bandwidth CATV Node

Accommodates up to 110 Channels

INSTRUCTION & OPERATION MANUAL

Phone: [phone]

[phone]

Fax: [phone]

E-Mail: [e-mail]

www.olsontech.com

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Installation Instructions

1.1 General Installation Requirements

The installation of these units is very simple. There are no special unpacking instructions, except that care should be taken to
handle units gently. Fiber optic links are sensitive electronics devices that should be handled with care. The units 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.

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 limits.

1.2 Items Provided

The following is a list of items provided with each Model OTPN-MDN-870 Mini Digital Node:

Qty. Mfr. P/N Description

AR Olson Tech. OTPN-MDN-870 Fiber Optic Mini Digital Node

1.3 Items Required

Qty. Mfr. P/N Description

AR Olson Tech. OTOT-1000 LaserLite 1310nm 1,000MHz Forward Path Transmitter

1 per Rx Olson Tech. OTPS-12A-4W

4 per unit Any Any 6-32 Pan head Mounting Screws with Lock Washers and Nuts (For Rx)

1 Any Any Screwdriver

AR Any Any

1.4 Inspection

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

1.5 Module Placement

Units may be mounted in any orientation on most flat, dry surfaces. Secure pan head screws through mounting holes provided
at the base of the module. If the unit is placed in a location where ambient temperatures may exceed +38°C (100°F), a good
heat sink should be used. In that case, 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.

Rx Power Supply, +12 Volts, 1.5A DC Power Supply, with 4-pin Weidmul­ler Power Connector

9/125 m Single-mode Fiber

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1.6 Connections

Connector

Name

Optical Input SC/APC Optical input to the unit.

Optical Out

Connector Type Connector Function

Optical output from the return path unit.

It is imperative that back reflections be controlled to very low levels for good performance. This prod­uct must be used only with angle physical contact (APC) connectors or fusion splices.

Pin Function

1 +12 Volts DC

2 Ground

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

3

pin will be pulled low when the optical input is within optimal range

Optical Input Power Meter Output. This is an analog voltage pro-

4

portional to the amount of light reaching the detector. The response
is 1 Volt per mW of input light.

Power

4-Pin Weidmuller Con­nector (See Figure 1.1
for location of pin 1)

RF Output F Connector RF output from the unit.

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

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

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1.7 Unit Physical Description

A. Optical Status (Tri-colored LED): Green indicates that the unit is receiving the

optimum optical input power. If the optical power falls below the optimum
level, the LED will turn yellow. If the optical power rises above the optimum
level, the LED will turn red.

B. LCD Display: Displays the receiver optical input level, RF attenuator setting, and

equalization setting. The RF levels may be adjusted by the user via the
Up/Down/Select Buttons (items C and D). See Section 2.2 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 adjust-

ment.

E. Optical Input (SC/APC): Optical input to the receiver.

F. Optical Output (SC/APC): Optional optical output from the return path mod-

ule, when installed to the receiver.

Figure 1.1 - Model OTPN-MDN-870 Mini-Node CATV Receiver

WARNING

Invisible laser radiation emitted from the optical output connec­tor and the connector that attaches to the receiver. Avoid direct
eye contact with the beam

G. Power (4-Pin Weidmuller Connector): Supplies power to the receiver. See Sec-

tion 1.6 for pin connections.

H. RF Output (“F” Connector): RF output from the receiver.

I. RF Test -20dB (“F” Connector): Allows the user to measure the receiver RF

output levels 20dB down from the primary output.

J. RF Return Test -20dB (“F” Connector): Allows the user to measure the return

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

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