Spectracom 8144-DD Bedienungsanleitung

MODEL 8144-DD

Clock Selector/Distribution Amplifier

Instruction Manual

SPECTRACOM CORPORATION

95 Methodist Hill Drive, Suite 500

Rochester, NY 14623

Phone 585.321.5800

Fax 585.321.5219

www.spectracomcorp.com

REVISIONS, IF ANY, ARE LOCATED AT THE END OF THE MANUAL

REVISION A

December 2003

(Model 8144-DD/075020)

5-Year Warranty

SPECTRACOM 95 Methodist Hill Drive Suite 500 Rochester, NY 14623

+1.585.321.5800 FAX: +1.585.321.5218 www.spectracomcorp.com sa[email protected]

LIMITED WARRANTY________________________________

Spectracom warrants each new product manufactured and sold by

it to be free from defects in material, workmanship, and

construction, except for batteries, fuses, or other material normally

consumed in operation that may be contained therein, for five

years after shipment to the original purchaser (which period is

referred to as the "warranty period"). This warranty shall not

apply if the product is used contrary to the instructions in its

manual or is otherwise subjected to misuse, abnormal operations,

accident, lightning or transient surge, repairs or modifications not

performed by Spectracom.

The GPS receiver is warranted for one year from date of shipment

and subject to the exceptions listed above. The power adaptor, if

supplied, is warranted for one year from date of shipment and

subject to the exceptions listed above.

The Rubidium oscillator, if supplied, is warranted for two years

from date of shipment and subject to the exceptions listed above.

All other items and pieces of equipment not specified above,

including the antenna unit, antenna surge suppressor and antenna

pre-amplifier are warranted for 5 years, subject to the exceptions

listed above.

WARRANTY CLAIMS________________________________

Spectracom's obligation under this warranty is limited to in-factory

service and repair, at Spectracom's option, of the product or the

component thereof, which is found to be defective. If in

Spectracom's judgment the defective condition in a Spectracom

product is for a cause listed above for which Spectracom is not

responsible, Spectracom will make the repairs or replacement of

components and charge its then current price, which buyer agrees

to pay.

Spectracom shall not have any warranty obligations if the

procedure for warranty claims is not followed. Users must notify

Spectracom of the claim with full information as to the claimed

defect. Spectracom products shall not be returned unless a return

authorization number is issued by Spectracom. Spectracom

products must be returned with the description of the claimed

defect and identification of the individual to be contacted if

additional information is needed. Spectracom products must be

returned properly packed with transportation charges prepaid.

EXCEPT FOR THE LIMITED WARRANTY STATED ABOVE,

SPECTRACOM DISCLAIMS ALL WARRANTIES OF ANY KIND

WITH REGARD TO SPECTRACOM PRODUCTS OR OTHER

MATERIALS PROVIDED BY SPECTRACOM, INCLUDING

WITHOUT LIMITATION ANY IMPLIED WARRANTY OR

MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

Spectracom shall have no liability or responsibility to the original

customer or any other party with respect to any liability, loss, or

damage caused directly or indirectly by an Spectracom product,

material, or software sold or provided by Spectracom,

replacement parts or units, or services provided, including but not

limited to any interruption of service, excess charges resulting from

malfunctions of hardware or software, loss of business or

anticipatory profits resulting from the use or operation of the

Spectracom product or software, whatsoever or howsoever

caused. In no event shall Spectracom be liable for any direct,

indirect, special or consequential damages whether the claims are

grounded in contract, tort (including negligence), or strict liability.

EXTENDED WARRANTY COVERAGE___________________

Extended warranties can be purchased for additional periods

beyond the standard five-year warranty. Contact Spectracom no

later than the last year of the standard five-year warranty for

extended coverage.

8144-DD/075020

TABLE OF CONTENTS

SECTION 1 GENERAL INFORMATION

1.0 INTRODUCTION............................................................................... 1-1

1.1 FEATURES ....................................................................................... 1-1

1.2 WARRANTY INFORMATION AND PRODUCT SUPPORT .............. 1-2

1.3 MANUAL ERRATA AND SPECIAL DOCUMENTATION................... 1-2

1.4 UNPACKING..................................................................................... 1-2

1.5 CONFIGURATION OPTIONS ........................................................... 1-3

1.6 SPECIFICATIONS ............................................................................ 1-3

1.6.1 Inputs ................................................................................ 1-3

1.6.2 Outputs ............................................................................. 1-4

1.6.3 Power Requirements......................................................... 1-4

1.6.4 Mechanical and Environmental Specifications .................. 1-4

1.6.5 Status Indicators ............................................................... 1-5

1.6.6 Operator Controls.............................................................. 1-5

1.6.7 User-Configurable Options................................................ 1-6

1.6.8 Alarm Outputs ................................................................... 1-6

1.6.8.1 Alarm Classification ..................................... 1-6

1.6.8.2 Alarm Interface ............................................ 1-7

SECTION 2 INSTALLATION

2.0 INTRODUCTION............................................................................... 2-1

2.1 PREPARATION FOR USE................................................................ 2-1

2.1.1 AC Line Voltage Selection................................................. 2-1

2.1.2 Power Options................................................................... 2-2

2.2 SWITCH AND HEADER SETTINGS................................................. 2-3

8144-DD/075020

SECTION 3 OPERATION

3.0 INTRODUCTION ...............................................................................3-1

3.1 THEORY OF OPERATION................................................................3-2

3.2 FRONT PANEL FUNCTIONS............................................................3-2

3.3 REAR PANEL CONNECTIONS.........................................................3-4

SECTION 4 OPTIONS

4.1 DC POWER OPTIONS 52 AND 54....................................................4-1

4.2 MOUNTING OPTIONS ......................................................................4-1

4.2.1 Option 11, Rack Mount with Slides ....................................4-1

4.2.2 Option 102, 23/24-inch Rack Mount ..................................4-2

4.2.3 Option 103, Setback Mount ...............................................4-3

SECTION 5 SERVICE INFORMATION

5.0 MAINTENANCE AND CALIBRATION ...............................................5-1

5.1 FUSE REQUIREMENTS ...................................................................5-1

8144-DD/075020

LIST OF TABLES

TABLE 1-1 CONFIGURATION SUMMARY .........................................1-3

TABLE 2-1 SWITCH AND HEADER SETTINGS .................................2-3

TABLE 2-2 OUTPUT LINE LENGTH SWITCH ASSIGNMENTS .........2-8

TABLE 2-3 OUTPUT LINE LENGTH SWITCH SETTINGS..................2-8

TABLE 3-1 CLOCK OUTPUT CONNECTOR PINS .............................3-5

TABLE 4-1 OPTION 11 CHECKLIST...................................................4-1

TABLE 4-2 OPTION 102 CHECKLIST .................................................4-2

TABLE 4-3 OPTION 103 CHECKLIST .................................................4-3

LIST OF ILLUSTRATIONS

FIGURE 2-1 LINE VOLTAGE SELECTION/FUSE REPLACEMENT .....2-2

FIGURE 2-2 MODEL 8144-DD COMPONENT LAYOUT .......................2-4

FIGURE 2-3 8144-DD REAR PANEL.....................................................2-9

FIGURE 2-4 8144-DD FRONT PANEL ..................................................2-9

FIGURE 3-1 MODEL 8144-DD BLOCK DIAGRAM................................3-1

FIGURE 3-2 MODEL 8144-DD FRONT PANEL.....................................3-3

FIGURE 3-3 MODEL 8144-DD REAR PANEL .......................................3-4

SECTION 1 GENERAL INFORMATION

1.0 INTRODUCTION

1.1 FEATURES

1.2 WARRANTY INFORMATION AND PRODUCT SUPPORT

1.3 MANUAL ERRATA AND SPECIAL DOCUMENTATION

1.4 UNPACKING

1.5 CONFIGURATION OPTIONS

1.6 SPECIFICATIONS

Instruction Manual 8144-DD/075020 Page 1-1

GENERAL INFORMATION

AUTO

MANUAL

ALARMS READY INPUT SELECT

Clock Selector/Distribution Amplifier

MAJOR MINORRESET ACO ABAB

1.0 INTRODUCTION

Reliable timing in T1 networks is critical. The 8144 Clock Selector/Distribution Amplifier

enhances reliability by providing manual or automatic switchover to a backup system

clock when the primary system clock has failed. The 8144 also provides twelve outputs

for distribution of the selected clock.

1.1 FEATURES

The 8144 Clock Selector/Distribution Amplifier offers the following features:

•Manual or automatic switchover between two clock sources or single input

operation.

•Local and remote alarm indicators, normal or latched, reset from the front

panel.

•Redundant power sources

•Twelve independent outputs.

•DS1 input and output signals.

Section 1: General Information

Page 1-2 Instruction Manual 8144-DD/075020

1.2 WARRANTY INFORMATION AND PRODUCT SUPPORT

Warranty information is found on the leading pages of this manual. Contact Spectracom

Corporation to obtain a replacement or service.

Spectracom continuously strives to improve its products. We greatly appreciate any and

all customer feedback given. Please direct any comments or questions regarding

application, operation, or service to Spectracom's Customer Service Department.

Customer Service is available Monday through Friday from 8:30 A.M. to 5:00 P.M.

Eastern time at 585-321-5800.

Before returning any instrument to Spectracom Corporation, please contact Customer

Service to obtain a Return Material Authorization Number (RMA#). Please provide the

serial number and failure symptoms. Transportation to the factory is to be prepaid by

the customer.

1.3 MANUAL ERRATA AND SPECIAL DOCUMENTATION

Information concerning manual corrections or changes made to the instrument

occurring after the printing of this manual are found on the errata sheet located at the

rear of this manual.

Spectracom sometimes makes instrument modifications upon special request. The

documentation associated with any special modifications is also located in the back of

the manual.

1.4 UNPACKING

Upon receipt, examine the carton and its contents carefully. If there is carton damage

which results in damage to the unit, contact the carrier immediately so its representative

may witness such damage. If you fail to report shipping damage immediately, you may

forfeit any claim against the carrier. You should also notify Spectracom Corporation of

shipping damage or shortages so that we can either help you obtain a replacement or

repair the damaged equipment.

Open the shipping carton carefully and remove the packing list from the envelope on the

outside of the carton. Check the packing list against the contents to be sure all items

have been received, including an Instruction Manual and an ancillary kit.

Retain the carton and packing materials in the event the unit is reshipped or returned to

the factory.

Section 1: General Information

Instruction Manual 8144-DD/075020 Page 1-3

1.5 CONFIGURATION OPTIONS

The Model 8144-DD Clock Selector/Distribution Amplifier can be ordered in a variety of

power and mounting configurations. When specific configurations are referenced in this

Instruction Manual, the format 8144-DD-P-M is used, P and M are the power and

mounting option designations, respectively. The options are listed below in Table 1-1,

Configuration Summary.

Option Type Option Designation

Power

(P)

AC (Standard)

12 to 24 VDC Power

48 VDC Power

(none)

Mounting

(M)

19" Rack (Standard)

19" Rack with Slides

23/24" Rack

19" Setback Rack

(none)

102

103

TABLE 1-1 CONFIGURATION SUMMARY

1.6 SPECIFICATIONS

1.6.1 Inputs

The Model 8144-DD accepts one or two clock inputs as well as one or two alarm inputs.

DS1 CLOCK INPUTS

The DS1 clock inputs comply with ANSI T1.102-1987 as follows:

Line Rate: 1.544 Mb/s

Tolerance: ±130 ppm (200.72 Hz)

Level: 1.0 to 3.6V base-to-peak

Termination: Balanced twisted pair

Impedance: Terminated: 100 ohms ±5%, bridging >1500 ohms

Pulse Shape: Per ANSI T1.102-1987

Section 1: General Information

Page 1-4 Instruction Manual 8144-DD/075020

ALARM INPUTS

The alarm inputs are configured to operate as RS-422/485 receivers as follows:

Line Rate: DC

Level: Sensitivity ±200 mV, hysteresis 50 mV typical

Termination: Balanced twisted pair

Impedance: Terminated 120 ohms ±5%

Unterminated > 4K ohms

Alarm inputs can also be configured for contact closure input. A contact closure

between pins 1 and 3 on the alarm inputs alarms the A channel. A contact closure

between pins 4 and 6 alarms the B channel.

1.6.2 DS1 Outputs

The Model 8144-DD provides up to twelve clock outputs.

DS1 CLOCK OUTPUTS

The twelve DS1 clock outputs comply with ANSI T1.102-1987 as follows:

Line Rate: 1.544 Mb/s

Tolerance: Same frequency as input

Level: 2.4 to 3.6V base-to-peak into 100 ohms ±5%

Termination: Balanced twisted pair

Impedance: 100 ohms ±5%

Pulse Shape: Per Figure 1 of ANSI T1.102-1987

1.6.3 Power Requirements

Standard Option: 115/230 VAC ±15% 50/60 Hz, 15 watts

Option 52, 12 to 24 VDC: ±11.0 to 32.0 VDC, 12 watts

Option 54, 48 VDC: ±55.2 VDC ±20%, 12 watts

1.6.4 Mechanical and Environmental Specifications

Height: 2 rack units (3.50 inches)

Width: EIA 19" rack

Depth: 10 inches

Weight: 6 lbs. maximum

Temperature: 0 to +50°C operating range

Humidity: 95% R. H. non-condensing

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