Spectracom 8147-5000-0050 Rev D 电路图.pdf

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1、 Model 8140VT VERSATAP INSTALLATION AND OPERATION MANUAL 95 Methodist Hill Drive Rochester, NY 14623 Phone: US +1.585.321.5800 Fax: US +1.585.321.5219 Part Number 8147-5000-0050 Manual Revision D January 2011 RadioFans.CN 收音机爱 好者资料库 Copyright 2010 Spectracom Corporation. The contents of this publica

2、tion may not be reproduced in any form without the written permission of Spectracom Corporation. Printed in USA. Specifications subject to change or improvement without notice. Spectracom, NetClock, Ageless, TimeGuard, TimeBurst, TimeTap, LineTap, MultiTap, VersaTap, and Legally Traceable Time are S

3、pectracom registered trademarks. All other products are identified by trademarks of their respective companies or organizations. All rights reserved. RadioFans.CN 收音机爱 好者资料库 SPECTRACOM LIMITED WARRANTY LIMITED WARRANTY Spectracom warrants each new product manufactured and sold by it to be free from

4、defects in software, material, workmanship, and construction, except for batteries, fuses, or other material normally consumed in operation that may be contained therein AND AS NOTED BELOW, for five years after shipment to the original purchaser (which period is referred to as the “warranty period”)

5、. 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 da

6、te 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 ANALOG CLOCKS ARE WARRANTED FOR ONE YEAR FROM DATE OF SHIPMENT AND SUBJECT TO THE EXCEPTIONS LISTED ABOVE. THE TI

7、MECODE READER/GENERATORS ARE 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 specifi

8、ed 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 Spectracoms obligation under this warranty is limited to in-factory service and repair, at Spectracoms option, of the product or

9、 the component thereof, which is found to be defective. If in Spectracoms 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, whi

10、ch 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

11、 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. Shipping expense:

12、 Expenses incurred for shipping Spectracom products to and from Spectracom (including international customs fees) shall be paid for by the customer, with the following exception. For customers located within the United States, any product repaired by Spectracom under a “warranty repair” will be ship

13、ped back to the customer at Spectracoms expense unless special/faster delivery is requested by customer. Spectracom highly recommends that prior to returning equipment for service work, our technical support department be contacted to provide trouble shooting assistance while the equipment is still

14、installed. If equipment is returned without first contacting the support department and “no problems are found” during the repair work, an evaluation fee may be charged. EXCEPT FOR THE LIMITED WARRANTY STATED ABOVE, SPECTRACOM DISCLAIMS ALL WARRANTIES OF ANY KIND WITH REGARD TO SPECTRACOM PRODUCTS O

15、R 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 d

16、irectly or indirectly by any 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 a

17、nticipatory 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), o

18、r 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. SPECTRACOM 95 Methodist Hill Drive Rochester, NY

19、 14623 US +1.585.321.5800 FAX: US +1.585.321.5218 RadioFans.CN 收音机爱 好者资料库 Spectracom Corporation Model 8140VT VersaTap Instruction Manual iii Table of Contents 1 INTRODUCTION . 1-1 1.1 Features 1-1 1.2 Specifications 1-2 1.2.1 Reference Input 1-2 1.2.2 Power 1-2 1.2.3 Outputs 1-3 1.2.4 Indicators 1-

20、3 1.2.5 Physical 1-3 2 INSTALLATION . 2-1 2.1 Inventory 2-1 2.2 Inspection 2-1 2.3 Physical Installation 2-1 2.3.1 Stand-Alone Installation 2-2 3 CONFIGURATION . 3-3 3.1 Internal Jumpers 3-5 3.2 Adjustments 3-7 3.2.1 Crystal Oscillator Adjustment 3-7 3.2.2 Lock Detector Level Adjustment 3-7 4 PERFOR

21、MANCE TESTS . 4-1 4.1 Test 1 DC Voltages 4-2 4.2 Test 2 VCXO Alignment 4-2 4.3 Test 3 Lock Threshold 4-2 4.4 Test 4 Input Sensitivity 4-2 4.5 Test 5 Output Levels 4-2 5 OPTIONS . 5-1 5.1 Option 40 External DC Input 5-1 5.2 Option 62 Dual Framed All Ones Output Locked to 10 MHz Input 5-2 5.3 Option 6

22、6 Dual E1 Framed All Ones Output 5-3 Model 8140VT Spectracom Corporation VersaTap Instruction Manual iv List of Figures Figure 2-1: Stand-Alone Installation . 2-2 Figure 3-1: Typical System Configuration . 3-3 Figure 3-2: Jumper Locations . 3-6 Figure 4-1: VersaTap Test Setup . 4-1 Figure 5-1: DS1 F

23、ramed All Ones Connector . 5-2 Figure 5-2: E1 Framed All Ones Connector . 5-3 Figure 5-3: Frame Selection Jumpers . 5-3 Figure 5-4: Programmable Jumper Locations . 5-4 Spectracom Corporation Model 8140VT VersaTap Instruction Manual 1-1 1 Introduction The Spectracom Model 8140VT VersaTap is a special

24、-frequency line tap in the Spectracom Frequency Distribution Amplifier System. The VersaTap contains a crystal oscillator that is phase locked to an incoming 10 MHz reference. There are two configurations available, 10-62 (DS1 output), and 10-66 (E1 output). 1.1 Features The standard VersaTap has tw

25、o output connectors. An LED indicator labeled OSC LOCK lights when the crystal oscillator is phase locked to the incoming reference. The indicator blinks if the input DC voltage is less than 8 VDC. The 10 MHz reference may originate from any of the following Spectracom units: Model 8140 Frequency Di

26、stribution Amplifier with separate 10 MHz frequency source Model 8195B Ageless Oscillator with Option 03, Built-in Distribution Amplifier Model 8197 Ageless Master Oscillator with Option 03, Built-in Distribution Amplifier 9200 / 9300 NetClock Series NTP Server SecureSync Time and Frequency Applianc

27、e NOTE: Option 40 is required when using 8140VT with 9200 / 9300 NetClock Series, SecureSync, or Models 8195A/B, or 8197 without Option 3 installed. Model 8140VT Spectracom Corporation VersaTap Instruction Manual 1-2 1.2 Specifications Specifications for the Model 8140VT VersaTap include those for u

28、nit inputs, outputs, the OSC LOCK LED, and physical specifications. 1.2.1 Reference Input Signal: 10.0 MHz sinewave. Alternate input frequencies are available on a special order basis. Level: 100 mV to 5.5V peak to peak Impedance: High impedance. To avoid reflections, the VersaTap must be properly t

29、erminated. Connector: BNC T NOTE: The 10 MHz reference has a signal level between 100 millivolts and 5.5 volts peak-to- peak on a DC voltage of 8 to 12 VDC. The DC current requirement is 165 milliamps at +12 VDC with a 50 ohm load on Output A and Output B. 1.2.2 Power VersaTaps with serial numbers 8

30、140VT-1225 and above, or those shipped after 3/12/91, have a switching power connector. This connector allows the VersaTap to be powered from a distribution line or external power supply. Distribution Loading: Typically consumes 150 milliamps from distribution line. Equivalent to three (3) line tap

31、loads. External Power: Provided with Option 40; otherwise, select AC adapter with specifications listed herein. Output Voltage: 9-12 Volts DC Minimum Current: 300 mA Connector: Coaxial “Barrel-Type” Plug Polarity: Barrell Negative; Tip Positive Plug Size: 5.5 mm OD, 2.1 mm ID Spectracom Corporation

32、Model 8140VT VersaTap Instruction Manual 1-3 1.2.3 Outputs The VersaTap has two outputs, designated Output A and Output B. Refer to Section 6-3 for specifications. 1.2.4 Indicators The OSC LOCK LED will light when the VersaTap is locked to the incoming 10 MHz reference. The LED blinks if the DC inpu

33、t is low, which may cause a malfunction. The LED is off when the VersaTap is not locked to the incoming 10 MHz reference. 1.2.5 Physical Size: 9.5L x 4.25W x 1.75H inches 240L x 110W x 45 H mm Mounting pattern: 8.8 x 2.8 inches (225 x 70 mm) Weight: 2 lbs (0.91 kg) Temperature: 0 - 50C Label: Serial

34、 number tag lists unit serial number, options, and input/output frequencies when applicable. Spectracom Corporation Model 8140VT VersaTap Instruction Manual 2-1 2 Installation Install and test your Spectracom equipment as described herein. In all cases, if any problems occur during installation and

35、configuration, please contact Spectracom Technical Support at US +1 585.321.5800. CAUTION: Electronic equipment is sensitive to Electrostatic Discharge (ESD). Observe all ESD precautions and safeguards when handling Spectracom equipment. NOTE: If equipment is returned to Spectracom, it must be shipp

36、ed in its original packing material. Save all packaging material for this purpose. 2.1 Inventory Before installing this equipment, please verify that all material ordered has been received. If there is a discrepancy, please contact Spectracom Customer Service at US 585.321.5800. 2.2 Inspection Unpac

37、k the equipment and inspect it for damage. If any equipment has been damaged in transit, please contact Spectracom Customer Service at US 585.321.5800. 2.3 Physical Installation Spectracom recommends that the VersaTap be mounted to a bench or nearby wall, using the mounting holes in the base of the

38、unit. A BNC tee connector is provided on the INPUT connector. Connect an RG-58/U coaxial cable from the distribution amplifier to the tee connector. Connect a second RG-58/U cable from the other side of the tee connector and continue on to the next unit. NOTE: The last unit must be terminated with a

39、 50 ohm DC isolated terminator. Terminators are furnished with the base unit (Model 8140). Additional terminators may be ordered from Spectracom. Contact Customer Service at US +1.585.321.5800 for more information. After the VersaTap is connected to a 10.0 MHz reference, the OSC LOCK LED will light.

40、 This should take less than 30 seconds to occur. If the OSC LOCK LED does not light, refer to Performance Tests for the appropriate testing procedure(s). Model 8140VT Spectracom Corporation VersaTap Instruction Manual 2-2 2.3.1 Stand-Alone Installation The VersaTap may be powered from an external so

41、urce. This allows the VersaTap to be used with frequency sources other than the Spectracom distribution outputs. Available DC options include Option 40 115 VDC to 9 VDC AC Adapter (refer to the Options section of this manual for additional information). The VersaTap has high input impedance. To avoi

42、d reflections, the cable from the frequency source must be terminated at the VersaTap input connector. Terminate the cable with a 50- ohm BNC terminator. Figure 3-1 illustrates a typical stand-alone installation. FREQ SOURCE OPTION 40 AC ADAPTER TERMINATE LAST VERSATAP ON CABLE Figure 2-1: Stand-Alo

43、ne Installation Spectracom Corporation Model 8140VT VersaTap Instruction Manual 3-3 3 Configuration A typical system configuration is depicted in Figure 3-1. A standard frequency of 1, 5, or 10 MHz is provided to Distribution Amplifier. The Distribution Amplifier sends a 10 MHz standard frequency, r

44、iding on +12 VDC from four output ports. Line Taps or VersaTaps are located at remote locations. Figure 3-1: Typical System Configuration Model 8140VT Spectracom Corporation VersaTap Instruction Manual 3-4 Using RG-58/U coaxial cable, one VersaTap may be located a maximum distance of 1500 feet from

45、the distribution amplifier. This distance is limited by the attenuation characteristics of the cable (1.4 dB per 100 feet). For applications requiring connection distances of greater than 1500 feet, larger cable (such as RG-8) or a Model 8140TA Distribution Line Amplifier may be required. The maximum number of Li