Symmetricom TimeHub 5500 System Manual
  1. Manuals
  2. Brands
  3. Symmetricom Manuals
  4. Controller
  5. TimeHub 5500
  6. System manual

Symmetricom TimeHub 5500 System Manual

Hide thumbs Also See for TimeHub 5500:
Table of Contents

Advertisement

Quick Links

See also: Reference Manual , User Manual
Issue 6 – June 2003
Part Number 097-55501-01
TimeHub 5500
System Manual
1
2
3
5

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the TimeHub 5500 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Symmetricom TimeHub 5500

Summary of Contents for Symmetricom TimeHub 5500

  • Page 1 TimeHub 5500 System Manual Issue 6 – June 2003 Part Number 097-55501-01...
  • Page 2 Symmetricom may make improvements and or change in the products and or the programs described in this document at any time and without notice.
  • Page 3 What’s New in This Version Issue 6 of this document contains the following updates from the previous issue. Chapter 1, Description • Figure 1-1, Shelf: Revised figure. • Section 1.3.5, Clock Cards: Revised section. • Section 1.3.5.1, Passthrough Mode: Revised section with latest information on Passthrough Mode.
  • Page 4 This page intentionally left blank. 097-55501-01 Issue 6 – June 2003...

  • Page 5: Table Of Contents

    Contents Chapter 1 Description 1.1 Overview ........... . . 1.2 Physical Description .
  • Page 6 TimeHub 5500 System Guide 1.9 Redundancy Considerations ........
  • Page 7 Contents 3.6.1 Input/Alarm Connector Module (Master and Remote Shelf Only) ..........3.6.2 Output Connector Module (Master and Remote Shelf Only .
  • Page 8 TimeHub 5500 System Guide 4.7.4 Local Communication Port ....... . . 134 4.8 Cover Installation .
  • Page 9 Contents 6.1.4 GPS Input ..........194 6.1.5 Expansion Link 1 Input .
  • Page 10 TimeHub 5500 System Guide This page intentionally left blank. 097-55501-01 Issue 6 – June 2003...
  • Page 11 1-4 Attempt to Clear Port Alarm Query Screen ......1-5 TimeHub 5500 Expansion Shelf – Front View ......
  • Page 12 TimeHub 5500 System Guide 4-15 Timing Output Connections (090-41902-01) Wirewrap Panel ... . 133 5-1 Clock Card Front Panel ......... . 157 5-2 Output Driver Card Front Panel .
  • Page 13 Tables 1-1 SSM Quality Level and Meaning ........1-2 SSM Source Determination for Remote Shelf .
  • Page 14 TimeHub 5500 System Guide This page intentionally left blank. 097-55501-01 Issue 6 – June 2003...
  • Page 15 Procedures 1-1 Timing Reference Input Setup ........1-2 Using DS1 Inputs for SSM Decoding on a Remote Shelf .
  • Page 16 TimeHub 5500 System Guide This page intentionally left blank. 097-55501-01 Issue 6 – June 2003...

  • Page 17: Chapter 1 Description

    Chapter Chapter 1 Chapter 1 Description This chapter includes: • Overview • Physical Description • Functional Description • Master/Remote Shelf • Remote Shelf Capability • Master Shelf Capabilities Supporting Remote Operation • Expansion Shelf Capabilities • Relationship between Output Driver Cards and Expansion Output Connector Modules •...

  • Page 18: Overview

    TimeHub 5500 System Guide 1.1 Overview The TimeHub 5500 is a building integrated timing supply (BITS) redundant timing distribution system for 1.544 Mb/s primary rate networks. The system tracks incoming timing references, qualifies the signals against network timing standards, then filters and distributes precise timing to all network elements in the node.

  • Page 19: Functional Description

    16.6 in. (suitable for 19 in. or 23 in. rack mount) 1.3 Functional Description The TimeHub 5500 System accepts up to five incoming signals, selects one of the qualified references (inputs 1–5) as the active tracked reference using criteria programmed by a system administrator, then filters and distributes precise timing signals to the office equipment.
  • Page 20 TimeHub 5500 System Guide Figure 1-2 shows a block diagram of a TimeHub 5500 with redundant clock cards and 140 protected outputs. The outputs of each clock card and the management card are connected to all output driver cards. Expansion shelves are capable of providing 320 protected outputs.

  • Page 21: Block Diagram

    Description Figure 1-2. Block Diagram Cables to wire- wrap panels Output Output Driver Connector Outputs Card #1 Module #1 Clock Output Output Card #1 Driver Connector Outputs PRS Input Card #2 Module #2 Clock (see Note 1) Card #2 Output Output Input/Alarm DS1 Inputs...

  • Page 22: Communication Ports

    TimeHub 5500 System Guide 1.3.1 Communication Ports 1.3.1.1 LAN The LAN connection provides a means for the TimeHub 5500 to be accessed via Ethernet. Network parameters are configured using TL1 commands. TimeHub 5500 can support up to 10 simultaneous network sessions.

  • Page 23: Ssm Quality Level And Meaning

    DON’T USE for synchronization Reserved 1.3.4.1 Input SSM The TimeHub 5500 provides several input-related SSM capabilities. Foremost is the ability to extract and report the encoded SSM value on any of the timing inputs. The TL1 keyword CURRSSM provides this capability.
  • Page 24 TimeHub 5500 System Guide value can be assigned to each of the inputs. For all inputs, if the SSMENB setting is "N" (see next comment), CURRSSM will simply respond with the QLEVEL setting. • The SSMENB (SSM Enable) keyword is used to tell the TimeHub that this input should actually extract SSM information from the input (as opposed to using the QLEVEL setting for the input).
  • Page 25 It isn't necessary for SYNCMDE to be set to "SSM" for outputs to encode SSM information. • When the TimeHub 5500 is using an internal oscillator as the timing reference source, the output SSM quality level will be the quality level appropriate to the performance level of that internal...

  • Page 26: Clock Cards

    If, for some reason, all external timing references become dis- qualified (for example, signal is lost), the TimeHub 5500 will enter either Freerun or Holdover mode (indicated by front-panel LED). In either mode, the internal oscillator on the active clock card becomes the active timing reference.
  • Page 27 1.3.5.1 Passthrough Mode The TimeHub 5500 supports a capability to provide a usable clock in a situation where both clock cards are removed. The capability is called Passthrough and resides on the TimeHub management card. The management card has connection to the timing inputs, which it continually monitors for signal presence.
  • Page 28 TimeHub 5500 System Guide had most recently been qualified by the clock card before it was removed. The attempt will begin with the lowest numbered input. If none of the inputs that had been most recently qualified are available (due to LOS), Passthrough will select any other input that is providing a signal.
  • Page 29 Description • Passthrough will function only if the shelf is configured as a master system. Passthrough will not function if the shelf is configured as a remote system. • There are likely to be brief phase-hits on the outputs when entering and exiting passthrough mode.
  • Page 30 TimeHub 5500 System Guide operation. : Since Passthrough is not a normal operating mode, it should not be routinely used. It is intended to provide a mechanism to “keep alive” the outputs in a situation where both clock cards are inadvertently removed. The timing performance when in Passthrough mode cannot be assured.

  • Page 31: Management Card

    4315B or later AND have hardware revision B or later…" 1.3.6 Management Card The management card manages alarms to and from the TimeHub 5500 System, and provides local and Ethernet LAN communication interfaces. 097-55501-01 Issue 6 – June 2003...

  • Page 32: Alarms

    TimeHub 5500 System Guide If an alarm condition occurs, the management card determines whether the alarm state is critical, major, or minor, actuates the corresponding alarm relays, causes the appropriate lamps to light, and generates TL1 alarm message(s) via the local or LAN communication interface.

  • Page 33: Output Driver Cards

    If both output port cards in a redundant pair have detected port alarms on the same port, the OPTALMEXT (“Alarms on same ports - check external conditions”) event will be generated. See detailed description of this event in Table M of the TimeHub 5500 TL1 reference manual. •...
  • Page 34 If the alarm does not self-clear, the CLRPTALL keyword can be used to request an attempt to clear the alarm (see TimeHub 5500 TL1 reference manual, keyword CLRPTALL). 097-55501-01 Issue 6 – June 2003...

  • Page 35: Configuration --> Output Screen

    Description Using TimeScan THC software, the clear attempt can be activated via the following sequence: 1. Select the Configuration --> Output screen (Figure 1-3) and identify the output card group that is to have port alarm clear attempted. In the example shown, the C output group on the Master shelf is selected.

  • Page 36: Output Connector Modules

    160 outputs. 1.4 Master/Remote Shelf The TimeHub 5500 can be configured for use as a master shelf or as a remote shelf. The essential difference between these configurations is that a 097-55501-01 Issue 6 – June 2003...

  • Page 37: Remote Shelf Capability

    Description master shelf will accept PRS (5 or 10 MHz) and DS1 inputs as timing references whereas a remote shelf accepts Composite Clock (CC) inputs as the timing reference(s). Typically, a remote shelf takes its CC timing inputs from a TimeHub or DCD master shelf, both which are capable of providing CC outputs.

  • Page 38: Operational Specifics

    TimeHub 5500 System Guide master shelf (for example, one from the "C" group, another from the "D" group). The cable length delay from master to remote shelf can be compensated at either the master or remote shelf via the CCDEL and CCDENB keywords.
  • Page 39 Once connected, the TL1 RTRV-COND command provides this information (for example, input loss of signal or out of frame can be observed via RTRV- COND). Refer to the TimeHub 5500 TL1 Reference Manual for details. 097-55501-01 Issue 6 – June 2003...

  • Page 40: Ds1 Ssm Inputs

    TimeHub 5500 System Guide Procedure 1-1. Timing Reference Input Setup (Cont’d) Step Action Assuming that CC1 is the only qualified input, the "A" LED should also light, indicating that this is the Active timing reference, the one being used to drive any outputs provided by this shelf.

  • Page 41: Using Ds1 Inputs For Ssm Decoding On A Remote Shelf

    Description Procedure 1-2. Using DS1 Inputs for SSM Decoding on a Remote Shelf Step Action Connect the DS1 signal to be used as a source of SSM to the input/alarm connector module wirewrap pins labeled "DS1 TERM IN" on the row labeled "1" (refer to Figures 3-5 and 3-14).

  • Page 42: Details Of Remote Ssm Behavior

    TimeHub 5500 System Guide Procedure 1-2. Using DS1 Inputs for SSM Decoding on a Remote Shelf (Cont’d) Step Action If the previous step of this procedure succeeded, the remote shelf is now able to use this DS1 input 1 signal as an SSM source. The "A" (Active) LED indicates that this input is currently being used as the source of SSM information for the remote shelf.

  • Page 43: Master Shelf Capabilities Supporting Remote Operation

    Description Table 1-2. SSM Source Determination for Remote Shelf (Cont’d) Condition SSM Source Shelf has at least one active timing reference The SSM value is taken from the "assumed" SSM ("A" is lit in either CC1 or CC2 row). value (see QLEVEL keyword in TimeHub TL1 Reference Manual) associated with the active There are no valid SSM inputs.
  • Page 44 TimeHub 5500 System Guide violations (same polarity) on the input. The alignment will be to within tens of nanoseconds. See Figure for an example of a CC waveform. To perform an alignment use the following procedure: • Connect the CC signal that the master shelf is to align with to the CC IN 1 input on the input connector card (located on the back of the shelf, right hand sign as you face the back of the shelf).
  • Page 45 Description • Once the phase alignment is as expected, disable the alignment process by setting CCALIGN to N. This causes the master shelf to no longer use the CC IN 1 input as a reference, returning to normal operation using either PRS or DS1 inputs. When the shelf stops using the CC input, the phase alignment will be maintained.

  • Page 46: Expansion Shelf Capabilities

    1.7 Expansion Shelf Capabilities For situations requiring more outputs than can be provided by a master shelf, the TimeHub 5500 supports an expansion shelf capability. Each expansion shelf provides up to a maximum of 320 protected inputs. Up to four expansion shelves can be added to a master shelf for a total possible protected output capacity of 1420 outputs per TimeHub system.

  • Page 47: Timehub 5500 Expansion Shelf - Front View

    Description Figure 1-5. TimeHub 5500 Expansion Shelf – Front View Specific capabilities of the output driver card include: • Drive up to 40 outputs (40 DS1, 40 CC, or 20 CC & 20 DS1) • DS1 framable D4 or ESF, with full SSM support for ESF •...

  • Page 48: Expansion Controller Card (090-55545-01)

    TimeHub 5500 System Guide To check the firmware version of an Output Driver Card, perform a RTRV- NETYPE-ALL query and observe the lines associated with output driver cards, each of which will contain firmware version information. Refer to the following example: rtrv-netype-all:::sc1;...
  • Page 49 Description shelf output cards. • Communication (bi-directional) between master and expansion shelves. • Expansion shelf power monitoring and alarm reporting • Redundancy management • Signal integrity monitoring 1.7.3.1 Front Panel Indicators Figure 1-6 shows the EC card front panel indicators. 097-55501-01 Issue 6 –...

  • Page 50: Ec Card Front Panel Indicators

    TimeHub 5500 System Guide Figure 1-6. EC Card Front Panel Indicators The indicators are, in order from top to bottom: • Power LED. This LED will be green whenever the EC card is properly powered. • Fuse LED. The EC card has an on-board fuse. If the fuse becomes open this indicator will illuminate red (assuming the expansion shelf remains powered).
  • Page 51 Description alarms detected are: Shelf Power A or B not detected. This will illuminate the Alarm LED as well as appropriate Shelf Power LED (red). Associated TL1 events are EXPWRA and EXPWRB (Expansion Power Fail on terminal A or B). Problem with Link A or Link B.

  • Page 52: Functions Associated With Expansion Shelf Rear Side

    TimeHub 5500 System Guide If the LED is not lit it most likely indicates that the link cable is not connected. This can also occur if there are no clocks in the master shelf that are producing timing outputs. For example, this would happen if both master shelf clocks were still in War- mup.
  • Page 53 Description having two links is to support redundancy, so that a missing or failed link cable won't halt expansion shelf operation. Types of information carried on the link cable include clock timing and framing (from both master shelf clocks) and communication (used for expansion output card configuration and status monitoring).
  • Page 54 TimeHub 5500 System Guide the link sequence uses a termination connector (p/n 090-55505- 01). The termination connector is connected to the same physical location where a link cable would otherwise be connected to connect to the next shelf (the connection labeled "OUT"). The...

  • Page 55: Master Shelf And Expansion Shelf Interconnection

    Description Figure 1-7. Master Shelf and Expansion Shelf Interconnection 097-55501-01 Issue 6 – June 2003...

  • Page 56: Expansion Output Connector Modules

    TimeHub 5500 System Guide 1.7.6 Expansion Output Connector Modules Two types of output connector modules are available for the expansion shelf. One type provides 20 DS1 outputs; the other provides 20 CC outputs. These cards are similar in design to the output connector cards used on the master shelf, although the form factor of the expansion output connector modules is different.

  • Page 57: Relationship Between Output Driver Cards And Expansion

    Description • Once the connectors have adequately engaged, tighten the screws at top and bottom. This will ensure a good connection and conductive seal around the module perimeter. To remove an expansion output connector module: • Loosen the screws at top and bottom of the module. Make sure that they have actually released from the threads in the shelf.

  • Page 58: Redundancy Considerations

    TimeHub 5500 System Guide two output driver slots (shelf front) for each letter group is for redundancy, not to provide additional outputs. A single output driver card supplies 40 outputs, a pair of output driver cards in a letter grouping also supplies 40 outputs with the enhancement that those outputs are protected in the event of a single output driver card failure.

  • Page 59: Controlling Whether Or Not An Expansion Shelf Is Expected In The Timehub System

    Description If both clocks are in the master shelf then each output card will receive clocks from each, with preference given to the clock that is active (as seen on the master shelf clock card). Only one output card is needed for full functionality.
  • Page 60 TimeHub 5500 System Guide To handle this, a TL1 keyword was created: ECLKEXP. This keyword is detailed in the TL1 manual, but it essentially works as follows: • By default, the software in the TimeHub master shelf does not expect that an expansion shelf is intended to be part of the configuration.

  • Page 61: Chapter 2 Engineering & Ordering

    Chapter Chapter 1 Chapter 2 Engineering & Ordering This chapter includes: • Shelf Considerations • Wirewrap Panels • Timing Output Guidelines • LAN Communication Port • Ordering and Parts List • User-Supplied Tools and Materials...

  • Page 62: Shelf Considerations

    TimeHub 5500 System Guide 2.1 Shelf Considerations 2.1.1 Site Survey Before ordering the system, determine the shelf location, the –48 volt power source(s), and the grounding for the shelf. Remember to locate the shelf close to the equipment to be synchronized and far away from electrical noise sources, such as air conditioners, elevator motors, power systems, etc.

  • Page 63: Wirewrap Panels

    Engineering & Ordering 2.2 Wirewrap Panels 2.2.1 Existing and New If using an existing panel (e.g., 090-41902-01), leave the panel in the rack, and remove the ribbon cables from the panel before mounting the shelf in the rack. For the master shelf, if installing a new panel, mount the panel in the rack after mounting the shelf in the rack.

  • Page 64: Shelf-To-Connection Panel Cabling

    TimeHub 5500 System Guide 2.3.2 Shelf–to–Connection Panel Cabling Figure 2-2 shows an example of shelf–to–wire-wrap panel connections with two wire-wrap panels (090-41902-01) with built-in wire-wrap pins. At the rear of the shelf, each three-connector ribbon cable is connected from one connector on the output connector card to two of the connectors labeled “TO”...

  • Page 65: Timing Output Connections - Master And Remote Shelf (Rear View)

    Engineering & Ordering Figure 2-2. Timing Output Connections – Master and Remote Shelf (Rear View) Wire-Wrap Panel Ports Ports Ports Ports Ports Ports Ports Ports B31–B40 B21–B30 B11–B20 B1–B10 A31–A40 A21–A30 A11–A20 A1–A10 1 2 3 4 5 6 7 8 910 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 910 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 910 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 910 1 2 3 4 5 6 7 8 9 10 D1–D20 C21–C40 C1–C20...

  • Page 66: Output Driver Cards

    TimeHub 5500 System Guide Figure 2-3. Timing Output Connections – Expansion Shelf (Rear View) B 21..40 B 21..40 A 1..20 A 1..20 Wirewrap Panel I B 1..20 B 1..20 A 21..40 A 21..40 Outputs D 21..40 D 21..40 C 1..20 C 1..20...

  • Page 67: Timing Output Cabling

    “local” connection along the top on the rear of the shelf. Once the IP address has been set and a LAN connection made, the TimeHub 5500 can be accessed remotely via network. To do this, obtain network parameters values from the system...

  • Page 68: Master And Remote Shelf Basic Components

    TimeHub 5500 System Guide Table 2-1. Master and Remote Shelf Basic Components Item Part Number Included Items Master shelf kit 090-55500-01 • Master shelf (090-55501-03) • Wirewrap input module (090-55561-01) • Wirewrap panel (190-55595-01) x 1 • 19 in. and 23 in. mounting hardware •...

  • Page 69: Expansion Shelf Basic Components

    Engineering & Ordering Table 2-2 lists the basic components that should be ordered when ordering an expansion shelf. Table 2-2. Expansion Shelf Basic Components Item Part Number Included Items Expansion shelf 090-55505-02 • Expansion shelf (090-55505-03) • Wirewrap panel (190-55595-01) x 1 •...

  • Page 70: Additional Accessories And Spare Parts

    TimeHub 5500 System Guide Table 2-3 lists the additional accessories and spare parts that can be ordered separately. Table 2-3. Additional Accessories and Spare Parts Item Part Number Description Accessories Blank panel for clock 093-55598-01 Blank panel to cover slot of uninstalled input/clock card.

  • Page 71: User-Supplied Tools And Materials

    Engineering & Ordering 2.6 User-Supplied Tools and Materials User-supplied tools and materials are listed below. • Phillips-head screwdriver for installing the TimeHub 5500 Shelf in a rack • ESD wrist strap for installing cards • Digital multimeter (Fluke 77 or equivalent) for verifying power connections to the shelf •...
  • Page 72 TimeHub 5500 System Guide This page intentionally left blank. 097-55501-01 Issue 6 – June 2003...

  • Page 73: Chapter 3 Installation

    Chapter Chapter 1 Chapter 3 Installation This chapter includes: • Overview • Unpacking • Rack Mounting • Configuring the Shelf as Master or Remote • Configuring an Expansion Shelf • Connector Module Installation • Blank Panels • Cabling...

  • Page 74: Overview

    TimeHub 5500 System Guide 3.1 Overview Install the TimeHub 5500 using the sequence given in this chapter. To take the TimeHub 5500 to full operational status, complete both this chapter (Installation) and the next chapter (Operational Verification & Configuration). This chapter covers steps to install the TimeHub 5500 system in preparation for power-up.

  • Page 75: Rack Mounting

    3.3.2 Wirewrap Panel Mount the wirewrap panels in the rack just above, below, or one above and one below the TimeHub 5500, leaving enough room for cable management and following standard company practices. 097-55501-01 Issue 6 – June 2003...

  • Page 76: Configuring The Shelf As Master Or Remote

    TimeHub 5500 System Guide 3.4 Configuring the Shelf as Master or Remote A TimeHub shelf can be configured for either master or remote operation without any change of equipment. In other words, the shelf and associated plug-ins are compatible with either mode of operation. There is only a single setup step required to establish whether the shelf will be a master or remote.

  • Page 77: Configuring An Expansion Shelf

    Installation There is a small arrow on the rotary switch that identifies the selected setting. In case you cannot see it clearly, the arrow points 90 degrees away from the direction of the slot. In other words, if the slot is exactly horizontal the arrow will be pointing exactly vertical (either straight up or straight down).

  • Page 78: Expansion Shelf Rotary Switch Settings And Functions

    TimeHub 5500 System Guide only one expansion shelf the rotary switch should already be set properly. Refer to Figure 3-3. Figure 3-3. TimeHub Expansion Shelf Rotary Switch Procedure 3-1 describes how to set the expansion shelf rotary switch. Procedure 3-1. Setting Expansion Shelf Rotary Switch...
  • Page 79 Installation Table 3-2. Expansion Shelf Rotary Switch Settings and Functions (Cont’d) Rotary Switch Position Function Confirmation All other positions Reserved for future use – 2. Mount the expansion shelf and associated wirewrap panels into the desired location. See "Rack Mounting" in chapter 3 for details and special considerations.

  • Page 80: Inter-Shelf Cabling Arrangements Block Diagram

    TimeHub 5500 System Guide Figure 3-4. Inter-Shelf Cabling Arrangements Block Diagram 097-55501-01 Issue 6 – June 2003...

  • Page 81: Connector Module Installation

    Installation e. If there are more expansion shelves to be connected, repeat steps a and b. f. If this is the last expansion shelf in the sequence, connect the terminating connector to the available link 1 (labeled "Expansion Link 1 OUT") and link 2 (labeled "Expansion Link 2 OUT") loca- tions on this shelf.

  • Page 82: Output Connector Module

    TimeHub 5500 System Guide Figure 3-6. Shelf Rear with Connector Modules Input/Alarm Connector Module Output Connector Modules 3.6.2 Output Connector Module (Master and Remote Shelf Only) Install the appropriate output connector module (Figure 3-7) type. • For DS1 outputs, use DS1 Output Connector modules (part number 090-55591-01), which are part of the DS1 Output Connector Module Kit (990-55591-01) (Figure 3-7A).

  • Page 83: Output Connector Module (Expansion Shelf Only)

    Installation Figure 3-7. Master and Remote Shelf Output Connector Modules Black Handle Blue Handle Output Connector Output Connector Captive Screw (6) Captive Screw (6) A. DS1 Output Connector Module B. CC Output Connector Module : Output connector module types can be distinguished by the handle on the module.

  • Page 84: Blank Panels

    TimeHub 5500 System Guide • For CC outputs use connector module p/n 090-55593-02, which is part of the CC Output Module Kit (990-55591-02) Figure 3-8. Expansion Shelf Output Connector Module To better understand how location of connector modules relates to output driver cards (inserted in next chapter), see “Relationship Between Output...

  • Page 85: Output Module Blank Panels (Master And Remote Shelf Only)

    Installation 3.7.3 Output Module Blank Panels (Master and Remote Shelf Only) The blank panel (p/n 093-55599-01) can be used in the master and remote shelves only. Install blank panels for output modules in the spaces where no output modules are installed. 3.7.4 Output Module Blank Panels (Expansion Shelf Only) There are two types of output module blank panels for the expansion shelf.

  • Page 86: Shelf-To-Wirewrap Panel Connections (Rear)

    TimeHub 5500 System Guide Figure 3-9. Shelf–to–Wirewrap Panel Connections (Rear) Wirewrap Panel “11–20” “1–10” Ports Ports Shelf A1–20 A21–40 Group A 097-55501-01 Issue 6 – June 2003...

  • Page 87: Wirewrap Panel Grounding

    Installation 3.8.2 Wirewrap Panel Grounding : If using an existing wirewrap panel, leave the wirewrap panel ground connection intact and skip to the “Shelf” subsection. Frame ground is connected to terminal block TB1 or TB2. Refer to Figure 3-10 for the location of the terminal blocks. Figure 3-10.

  • Page 88: Shelf

    TimeHub 5500 System Guide Without ground rod Crimp an appropriate-sized spade lug to the wire from the terminal block, and secure the lug to a screw hole on the rack. Remove the paint, and sand the area around the screw hole, to ensure proper conductivity.

  • Page 89: Battery Connections (Master Shelf)

    Installation 3.8.3.1 Frame Ground Frame ground connections are made on power terminal blocks TB1 and TB2. Refer to Figure 3-11 for the location of the terminals, and refer to Figure 3-12 for the terminal connections. The terminal connections are labeled. For convenience, the connection order is shown as well.
  • Page 90 : Make sure to remove the fuses in the fuse panel AUTION which will be used to power the TimeHub 5500 Shelf before connecting power. Also make sure to remove the fuses from the TimeHub 5500 Shelf before connecting power.
  • Page 91 48V B terminal on TB2. Connect office battery B return to the Return B – terminal on TB2. : Do not apply the office battery to the TimeHub 5500 AUTION at this time. : Two separate office battery supplies (battery A and battery B) are highly recommended.

  • Page 92: Input/Alarm Connector Module Connections

    TimeHub 5500 System Guide Figure 3-14. Input/Alarm Connector Module Connections CC IN 1 Composite Clock DS1 Reference (remote shelf use) CC IN 2 5/10 MHZ IN DS1 Monitor OFFICE ALARM EXT ALM INPUTS UNIVERSAL CONTACT CLOSURE ONLY 097-55501-01 Issue 6 – June 2003...

  • Page 93: Lan Pinouts

    Note: Pins not listed are reserved for future use. Local To provide an RS-232 link for TL1 command access to the TimeHub 5500, connect to the data terminal equipment (DTE) equivalent communication port 1 at the nine-pin connector labeled Local on the rear of the shelf. See...

  • Page 94: Local Pinouts

    TimeHub 5500 System Guide Figure 3-11 for the location of the connector and Table 3-4 for the connector pinouts. Table 3-4. Local Pinouts Signal Abbreviation Direction Transmit data From TimeHub 5500 Receive data To TimeHub 5500 Signal ground – Clear to send...

  • Page 95: Chapter 4 Operational Verification & Configuration

    Chapter Chapter 1 Chapter 4 Operational Verification & Configuration This chapter includes: • Overview • Power Test • Input Test • Card Installation • Input Qualification • Card Tests • Cabling • Cover Installation • System Configuration • Setting the Configuration to Factory Defaults •...

  • Page 96: Overview

    Test Equipment: Digital multimeter (Fluke 77 or equivalent) Ensure that all fuses that supply power to the TimeHub 5500 Shelf are removed from the fuse panel and from the front of the shelf, and no clock, management, or output driver cards are in the shelf.

  • Page 97: Shelf Rear Connectors

    Operational Verification & Configuration Procedure 4-1. Power Test (Cont’d) Step Action Use the multimeter to measure the voltage between the 48V B and Return terminal sets – on the TB1 terminal block on the shelf. The multimeter indicates –42 V dc to –56 V dc. Install both 3AG 10 A fuses (fuse A and fuse B) in the front of the shelf.

  • Page 98: Input Test

    TimeHub 5500 System Guide Figure 4-2. Battery Connections (Master Shelf) Return –48V Return –48V (Ground) (Ground) A. TB1 Connections B. TB2 Connections (Office Battery A) (Office Battery B) Figure 4-3. Battery Connections (Expansion Shelf) –48V Return Return –48V (Ground) (Ground) A.

  • Page 99: Input Test

    Operational Verification & Configuration To verify the clock input signal(s) are within the specified input voltage range, follow the steps in Procedure 4-2. Procedure 4-2. Input Test Step Action Test Equipment: Dual-channel oscilloscope with 100 MHz minimum bandwidth Obtain a dual-channel oscilloscope and set the controls as listed in Table 4-1. Note: Consult the oscilloscope manufacturer’s manual for details and operating instructions.
  • Page 100 TimeHub 5500 System Guide Table 4-1. Typical Oscilloscope Settings Control Setting Mode Trigger Switch Invert Switch INVERT Ch1 and Ch2: Volts/Div See Note Input Coupling Vert Position Control mid-range A Sweep Mode AUTO-TRIGGER Horizontal Display Switch Time/Div Switch: for CC 20 µs...

  • Page 101: Input Wirewrap Pins

    Operational Verification & Configuration Figure 4-4. Input Wirewrap Pins CC IN 1 Composite Clock DS1 Reference (used only with CC IN 2 remote shelf) 5/10 MHZ IN Monitor only OFFICE ALARM EXT ALM INPUTS UNIVERSAL CONTACT CLOSURE ONLY 097-55501-01 Issue 6 – June 2003...

  • Page 102: Card Installation

    TimeHub 5500 System Guide 4.4 Card Installation 4.4.1 Management Card To install the management card, follow Procedure 4-3. Procedure 4-3. Management Card Installation Step Action Set switch S1 on the management card as appropriate (see Figure 4-5 and Table 4-2).
  • Page 103 Operational Verification & Configuration Procedure 4-3. Management Card Installation (Cont’d) Step Action Replace the –48 volt B fuse. Requirements: On the management card: a. The SHELF POWER –48V B Fail lamp turns off. b. The ALARMS Shelf Major lamp turns off within a few seconds. c.

  • Page 104: Management Card Switch S1

    TimeHub 5500 System Guide Figure 4-5. Management Card Switch S1 Front Panel Local Communication Port (On) Note: Switch S1 is shown in the factory-set position. Table 4-2. S1 Switch Settings Position Description Factory Section Setting Security enable – Security disable...
  • Page 105 Operational Verification & Configuration Table 4-2. S1 Switch Settings (Cont’d) Position Description Factory Section Setting Enforce IP match enable (only communication from the addresses of the primary and/or alternate element managers [EM1 and EM2] will be accepted; communications from all other network addresses will be ignored) Enforce IP match disable (communication from any network –...
  • Page 106 TimeHub 5500 System Guide Figure 4-6. Management Card Power Fuse Alarm Fail SHELF POWER –48V A Fail B Fail ALARMS Major Minor Critical System Shelf Cutoff PASSTHROUGH Active COMM PORTS Local Remote Link Xmit Logon Local Captive Screws (4) 097-55501-01 Issue 6 – June 2003...

  • Page 107: Confirmation Of Master Or Remote Shelf Setting

    Input section, at the intersection of the row labeled “DS1 4” and the column labeled “A”. Proper configuration can also be verified by using the MAINCLK TL1 keyword (see TimeHub 5500 TL1 Reference Manual for details.)
  • Page 108 5500 TL1 Reference Manual for detailed information about this command.) If you have any of these firmware versions in your management or clock cards and are interested in remote shelf operation, contact the Symmetricom CAC for information about firmware upgrades. 097-55501-01 Issue 6 – June 2003...

  • Page 109: Clock Cards

    Operational Verification & Configuration 4.4.3 Clock Cards To install the clock cards, follow Procedure 4-4. Procedure 4-4. Clock Card Installation Step Action See Figure 4-8 for clock card lamps. Locate switch S1 on the right side panel of the clock cards (see Figure 4-9 and Table 4-3). If both clock cards are 55512 or both are 55514 (see front panel label), ensure that bit 1 on both clock cards is set to the ON position.

  • Page 110: Clock Card

    TimeHub 5500 System Guide Figure 4-8. Clock Card Power Fuse Alarm Fail TRACK MODE Warmup Freerun Tracking Fast Track SmartClock Holdover Available INPUTS Main E Q A 1 PPS 10 MHz Remote E – Enabled Q – Qualified A – Active...

  • Page 111: S1 Switch Settings

    Operational Verification & Configuration Figure 4-9. Clock Card Switch S1 Front Panel (On) Note: Switch S1 is shown in the factory-set position. Table 4-3. S1 Switch Settings Position Description Factory Section Setting Normal operation Mixed oscillator operation. This card contains a secondary –...

  • Page 112: Input Qualification (Master Shelf)

    Once connected, the TL1 RTRV-COND command provides this information (for example, input loss of signal or out of frame can be observed via RTRV- COND). Refer to the TimeHub 5500 TL1 Reference Manual for details. End of Procedure...

  • Page 113: Expansion Shelf Controller Cards

    TimeScan THC version 2.2 (or later) supports the expansion shelf capability (allows direct configuration of expansion shelf outputs). If you do not have this software and would like to have it, contact Symmetricom CAC. If you do have TimeScan THC version 2.2 (or later) things that may be useful to observe during configuration include: •...
  • Page 114 TimeHub 5500 System Guide • You can also bring up a form that shows generalized communication to and from the TimeHub. It is available from the same menu that brings up the automatic message form (Mode->Command Response). With this form in view, it is often...
  • Page 115 Operational Verification & Configuration 5. If it is convenient this is a good point to check that the inter-shelf links are functioning properly. To do this requires that the master shelf and the expansion shelf are powered and there is at least one clock card installed on the master shelf.
  • Page 116 TimeHub 5500 System Guide 6. Insert the output driver cards (090-55581-01) where desired in the slots on the front side of the expansion shelf. Note that when a driver card is installed into a location that has corresponding connector modules attached at the back of the shelf, there should be confir- mation that those modules are present on the output driver card LEDs.
  • Page 117 Operational Verification & Configuration "S0-OUT5C:,090-55581-01- A,,R4209A,00J21559,D0TPJN0AAA,267799,DS1," "S0-OUT6C:,090-55581-01- A,,R4209A,00J43212,DOTPJN0AAA,267799,DS1," > SYMMBITS 99-10-03 20:55:19 sc1 COMPLD "S2-CLK1:,090-55545-01-B,,4209A,,D0C1ZZ0AAA,299465" "S2-CLK2:,090-55545-01-B,,4209A,,D0C1ZZ0AAA,299465" "S2-OUT12F:,090-55581-01- A,,R4209A,00000000,D0TPJN0AAA,267799,," "S2-OUT14G:,090-55581-01- A,,R4209A,00J21577,D0TPJN0AAA,267799,DS1,DS1" The first set of responses (those that begin with "S0-") identify hardware in the master shelf. The second set of responses (those that begin with "S2-") identify hardware in the expansion shelf.
  • Page 118 TimeHub 5500 System Guide • For DS1 ports you can select framing as either D4 or ESF for groups of 20 ports. • For CC ports you can set a cable compensation value (groups of 20 ports) and individually select which ports will have the compensation applied.

  • Page 119: Output Driver Cards

    Such alarms are not actually indicating a problem with the output card. See “Output Port Alarms in TimeHub 5500” in the Functional Description section in Chapter 1. Procedure 4-6. Output Driver Card Installation...
  • Page 120 TimeHub 5500 System Guide Procedure 4-6. Output Driver Card Installation (Cont’d) Step Action To enable an output port of interest, the key steps are to put the card in-service, set the output framing (if appropriate), and enable the specific port. The following steps will...
  • Page 121 Operational Verification & Configuration Procedure 4-6. Output Driver Card Installation (Cont’d) Step Action b. If this port is connected to a DS1 connector card, the output framing may need to be set to suit your needs. An example of the TL1 command to accomplish this is: (cont’d) ED-EQPT::S1-OUTC-PG2:SV271:::OUTESF=Y;...
  • Page 122 TimeHub 5500 System Guide Procedure 4-6. Output Driver Card Installation (Cont’d) Step Action c. Finally, enable the specific port of interest. For example: (cont’d) ED-SYNC::S1-OUTC-25:SV275:::SQUELCH=N; This command enables port number 25 on output card(s) in group C (OUTC) of expansion shelf 1 (S1-). To turn off this individual port, the same command is used, but SQUELCH is set to Y.
  • Page 123 Operational Verification & Configuration Procedure 4-6. Output Driver Card Installation (Cont’d) Step Action This same procedure can be easily accomplished using the TimeScan THC software Configuration->Output form. This software automatically generates the required TL1 (cont’d) commands, the same ones described in the procedure above. The example shown below is from version 2.2 (version information appears when application starts up or can be seen via menu Help->about).
  • Page 124 TimeHub 5500 System Guide Procedure 4-6. Output Driver Card Installation (Cont’d) Step Action d. Finally, enable any specific port of interest by checking the associated check box for the desired port. The control for this is in the center of the form, covering the entire (cont’d)
  • Page 125 Operational Verification & Configuration Figure 4-10. Output Driver Card Power Fuse Alarm Fail Ports 1–20 Ports 21–40 Captive Screws (2) 097-55501-01 Issue 6 – June 2003...

  • Page 126: Ds1 Output Waveforms

    TimeHub 5500 System Guide Figure 4-11. DS1 Output Waveforms 648 ns ±0.05% 100% V = 2.4 V TO 3.6 V 100% V Test load impedance: 100 Ω for 22 AWG Pulse Rise Time twisted pair cable. <150 ns 324 ns 50% V ±50 ns...

  • Page 127: Card Tests

    Operational Verification & Configuration 4.6 Card Tests The following card tests verify that simulated failures generate appropriate alarms. See Figure for management card lamps, Figure for clock card lamps, and Figure for output driver card lamps. 4.6.1 Reference Switching To test reference input signal switching, follow Procedure 4-7. : To perform this test, two enabled and qualified inputs are required.
  • Page 128 TimeHub 5500 System Guide Figure 4-13. Active DS1 Input Signal Indication Power Fuse Alarm Fail TRACK MODE Warmup Freerun DS1 Input 1 Active Tracking Fast Track SmartClock Holdover Available INPUTS Main E Q A 1 PPS 10 MHz E – Enabled Q –...

  • Page 129: Clock Card Removal

    Operational Verification & Configuration 4.6.2 Clock Card Removal To test which alarms result from active clock card failure, follow Procedure 4-8. Procedure 4-8. Clock Card Removal Step Action Remove the clock card with the Active lamp lit. Requirements: a. On the remaining clock card in the shelf, the Standby lamp turns off. b.

  • Page 130: Cabling

    TimeHub 5500 System Guide 4.7 Cabling 4.7.1 Alarms 4.7.1.1 Office Connect the office alarms to the OFFICE ALARM critical (CR), major (MJ), and minor (MN) wirewrap pins on the Input/Alarm Connector module. See Figure 4-1 for the location of the alarm pins and Figure 4-14 for the connections.
  • Page 131 Connector module. See Figure 4-1 for the location of the alarm pins and Figure 4-14 for the connections. The external alarm inputs provide the capability for the TimeHub 5500 to accept alarms from external equipment. When an alarm is accepted, •...

  • Page 132: Input/Alarm Connector Module Connections

    TimeHub 5500 System Guide Figure 4-14. Input/Alarm Connector Module Connections CC IN 1 CC IN 2 5/10 MHZ IN OFFICE ALARM Office Alarms EXT ALM INPUTS UNIVERSAL External Alarms CONTACT CLOSURE ONLY 097-55501-01 Issue 6 – June 2003...

  • Page 133: Timing Outputs

    Operational Verification & Configuration 4.7.2 Timing Outputs Connect the DS1 or composite clock outputs to the wirewrap pins on the connection panel. Connect the tip wire to the pins labeled T, the ring wire to the pins labeled R, and the shield to the pins labeled S. See Figure 4-15 for the connections on 090-41902-01 wirewrap panels.

  • Page 134: Gps Input

    4.7.4 Local Communication Port If not using the Local connector on the rear of the shelf to provide an RS-232 link for TL1 command access to the TimeHub 5500, connect to the data terminal equipment (DTE) equivalent communication port 1 at the nine-pin connector labeled Local on the management card.

  • Page 135: System Configuration

    Connect a nine-pin male-to-female RS-232 interface cable from the computer communication port to the local port on the TimeHub 5500. The connection on TimeHub can be made either on the Management Card (far left side of shelf) or on the back of the shelf (upper left - see Figure ).
  • Page 136 TimeHub 5500 System Guide Procedure 4-9. System Configuration (Cont’d) Step Action If using TimeScan THC: a. Start up the application, which displays the following screen: b. On this screen, select the appropriate Comm port based on the computer connection. As shown, the application defaults to Comm 1. The baud rate setting should be 9600.
  • Page 137 Operational Verification & Configuration Procedure 4-9. System Configuration (Cont’d) Step Action Set date and time Setting of date and time ensures that reported and logged events will correctly indicate time of occurrence. If using TimeScan THC: a. As a security measure, a logon to the THC software is needed to allow attempting of configuration actions.
  • Page 138 TimeHub 5500 System Guide Procedure 4-9. System Configuration (Cont’d) Step Action If using terminal software, such as HyperTerminal, type in the TL1 command: (cont’d) ED-DAT:::SV25::02-10-11,12-05-44:; which sets the date to 2002, October 11 and the time to 12:05:44. TimeHub will respond...
  • Page 139 Operational Verification & Configuration Procedure 4-9. System Configuration (Cont’d) Step Action b. Based on the timing references planned for this installation, set the enabled row appropriately. Check inputs to be used, uncheck inputs that will not be used. PRS is the (cont’d) BNC connection on the input connector card (see Figure , 5/10 MHZ IN).
  • Page 140 TimeHub 5500 System Guide Procedure 4-9. System Configuration (Cont’d) Step Action The corresponding retrieval command: (cont’d) RTRV-SYNC::CLK-a:<ctag>:::PARAMETER=MONITOR; is used to determine the enable setting of a selected input. If using TimeScan THC: Since this setting is rarely used, there is no built-in command to change the MONITOR setting.
  • Page 141 Operational Verification & Configuration Procedure 4-9. System Configuration (Cont’d) Step Action To change priority if using terminal software, such as HyperTerminal, the TL1 general form for priority setting is: (cont’d) ED-SYNC::CLK-a:SV380:::PRIORITY=b; Where a = 0 - 4 to identify the input (PRS = 0) and b = 0 - 9 to set the actual priority value. To set input 2 priority to 3, type and send: ED-SYNC::CLK-2:SV380:::PRIORITY=3;...
  • Page 142 TimeHub 5500 System Guide Procedure 4-9. System Configuration (Cont’d) Step Action Set Bridged mode for enabled DS1 inputs, if needed. Generally, DS1 inputs connected to TimeHub will be terminated at the input. However, if the reference signal is bridged (which means it will be nominally 20 dB lower in amplitude), the bridged selection should be set for any such input.
  • Page 143 (such as PRS or D4-framed DS1) use an assumed SSM value (the changing of which is not described here since that is an advanced feature - see keyword QLEVEL in the TimeHub 5500 TL1 Reference Manual). The ESF-framed DS1 inputs will also use an assumed value unless reading of SSM is enabled.
  • Page 144 TimeHub 5500 System Guide Procedure 4-9. System Configuration (Cont’d) Step Action If using TimeScan THC: (cont’d) a. Bring up the Input Configuration screen by selecting the Configuration tab and the Input subtab. The columns labeled CC1 and CC2 identify the inputs that can be selected as timing references.
  • Page 145 If the shelf will normally operate with a single clock card, the SNGLCK keyword can be used to disable the alarm that is usually associated with this mode of operation. See the TimeHub 5500 TL1 Reference Manual for more information about the SNGLCK keyword. Provision outputs There are three basic steps to provisioning an output: 1.
  • Page 146 TimeHub 5500 System Guide Procedure 4-9. System Configuration (Cont’d) Step Action To put an output card in service using TimeScan THC: (cont’d) a. Select the Configuration -> Output screen, which will display the following: b. Select the output card group that is to be put into service. On the upper left is a selection for master or specific expansion shelf.
  • Page 147 Operational Verification & Configuration Procedure 4-9. System Configuration (Cont’d) Step Action Note: To address an expansion shelf, an Sx- must be prepended prior to the OUT, where the x identifies the expansion shelf number. This applies to both setting and retrieving. For (cont’d) example, to set in-service for group H on expansion shelf 3, send: ED-EQPT::S3-OUTH:SV1203:::INSRVC=Y;...
  • Page 148 TimeHub 5500 System Guide Procedure 4-9. System Configuration (Cont’d) Step Action Enable the output port so that a signal is actually being output. Each port can be individually enabled. To enable an output port using TimeScan THC: a. As with step 16, bring up the Configuration -> Output screen and select the specific card group of interest.
  • Page 149 Step Action Configure network parameters If not using a LAN (network) connection for accessing the TimeHub 5500, skip to the end of this procedure. Otherwise, continue with this procedure to set up the network connection. To set up network connection using TimeScan THC: a.
  • Page 150 TimeHub 5500 System Guide Procedure 4-9. System Configuration (Cont’d) Step Action d. Selecting Yes displays a screen similar to the following: (cont’d) Check once again that the settings are as desired and, once satisfied, select Yes. As described on the screen, the management card restarts so that it can actually utilize the new settings.
  • Page 151 AOMERGE value. In this case, the local manager software is used, which does not support having commands and events carried on separate ports. For details on the ILPM1 and IPLM2 parameters, refer to the TimeHub 5500 TL1 Reference Manual.
  • Page 152 TimeHub 5500 System Guide Procedure 4-9. System Configuration (Cont’d) Step Action Use the Edit Equipment command to set the gateway IP address. ED-EQPT:::<ctag>:::IPGATEX=a; a = a.a.a.a, where each is an independent value of 0 to 255 Note: To verify the parameter, use the Retrieve Equipment command.

  • Page 153: Setting The Configuration To Factory Defaults

    Operational Verification & Configuration Procedure 4-9. System Configuration (Cont’d) Step Action If AOMERGE was set to Y, skip to Step 28. If AOMERGE was set to N, use the Edit Equipment command to specify the port number for automatic output messages. ED-EQPT:::<ctag>:::PORTAOX=a;...

  • Page 154: System Operation Check

    End of Procedure 4.11 System Operation Check When the signals have been acquired and the outputs are stable enough to output PRS, the TimeHub 5500 enters its normal operation mode. During normal operation, the following conditions exist: • These should be observed on both clock cards:...

  • Page 155: Chapter 5 Maintenance

    Chapter Chapter 1 Chapter 5 Maintenance This chapter includes: • Troubleshooting with Card Front Panel Items • Card Replacement • Fuse Replacement • Repair and Return • Technical Assistance • Sales • Manual Updates...

  • Page 156: Troubleshooting With Card Front Panel Items

    TimeHub 5500 System Guide 5.1 Troubleshooting with Card Front Panel Items Use Tables 5-1, 5-2, 5-3, and to troubleshoot the system based on the clock, output driver, management, and EC card front-panel lamps. 5.1.1 Clock Card Clock card front-panel items are shown in Figure 5-1. The items are described in Table 5-1.

  • Page 157: Clock Card Front Panel

    Maintenance Figure 5-1. Clock Card Front Panel Power Fuse Alarm Fail TRACK MODE Warmup Freerun Tracking Fast Track SmartClock Holdover Available INPUTS Main E Q A 1 PPS 10 MHz Remote E – Enabled Q – Qualified A – Active Standby Active Force Active...
  • Page 158 TimeHub 5500 System Guide Table 5-1. Clock Card Front Panel Items Name State Description Action Power Power is not present. 1. If all lamps on the system are off, apply power. 2. If all lamps on the system are off, troubleshoot the –48 V power source.
  • Page 159 Maintenance Table 5-1. Clock Card Front Panel Items (Cont’d) Name State Description Action TRACK MODE The clock card is not in a None required. Warmup warm-up state. Yellow The clock card is warming up, None required. and the card is not yet active. TRACK MODE The clock card is not in a None required.
  • Page 160 TimeHub 5500 System Guide Table 5-1. Clock Card Front Panel Items (Cont’d) Name State Description Action TRACK MODE The system has not gathered None required if the system has Smart Clock sufficient information during been in fast track for less than...
  • Page 161 Maintenance Table 5-1. Clock Card Front Panel Items (Cont’d) Name State Description Action INPUTS The associated reference If the INPUTS E lamp is off or if input is not qualified (Q) for the Warmup lamp is lit, none tracking. required. If the Freerun lamp is lit longer than 1 min, troubleshoot the input signal source.

  • Page 162: Output Driver Card

    TimeHub 5500 System Guide Table 5-1. Clock Card Front Panel Items (Cont’d) Name State Description Action Active This card is not the If the Standby lamp on this card synchronization signal source is lit, none required. If the for all output cards.

  • Page 163: Output Driver Card Front Panel

    Maintenance Figure 5-2. Output Driver Card Front Panel Power Fuse Alarm Fail Ports 1–20 Ports 21–40 Captive Screws (2) 097-55501-01 Issue 6 – June 2003...
  • Page 164 TimeHub 5500 System Guide Table 5-2. Output Driver Card Front Panel Items Name State Description Action Power Power is not present. 1. If all lamps on the system are off, apply power. 2. If all lamps on the system are off, troubleshoot the –48 V...
  • Page 165 FPGA version B or later the Alarm LED will light if there is a port alarm detected. For details, see “Output Port Alarms in TimeHub 5500” in the Functional Description section of Chapter 1. The FPGA version can be seen at...
  • Page 166 If this is the cause of the Alarm, the OSTBYCLK (Output using STandBY CLocK) will be generated. See Table M in TimeHub 5500 TL1 Reference Manual for details. Also, in Chapter 1, a procedure is described for attempting to clear a port alarm.
  • Page 167 FPGA version A, the Fail LED will light if there is a port alarm detected. For details, see “Output Port Alarms in TimeHub 5500” in the Functional Description section of Chapter 1. The FPGA version can be seen at the end of output card version information in RTRV- NETYPE-ALL response.

  • Page 168: Management Card

    TimeHub 5500 System Guide Table 5-2. Output Driver Card Front Panel Items (Cont’d) Name State Description Action Ports 1–20 There is no connector card None required. connected to ports 1 through 20, no outputs can be generated. Green There is a CC connector card None required.

  • Page 169: Management Card Front Panel

    Maintenance Figure 5-3. Management Card Front Panel Power Fuse Alarm Fail SHELF POWER –48V A Fail B Fail ALARMS Major Minor Critical System Shelf Cutoff PASSTHROUGH Active COMM PORTS Local Remote Link Xmit Logon Local Captive Screws (4) 097-55501-01 Issue 6 – June 2003...
  • Page 170 TimeHub 5500 System Guide Table 5-3. Management Card Front Panel Items Name State Description Action Power Power is not present. 1. If all lamps on the system are off, apply power. 2. If all lamps on the system are off, troubleshoot the –48 V power source.
  • Page 171 Maintenance Table 5-3. Management Card Front Panel Items (Cont’d) Name State Description Action Fail No hardware or firmware None required. failure has occurred on the management card. A hardware or firmware failure Replace the card using has occurred on the Procedure 5-3.
  • Page 172 TimeHub 5500 System Guide Table 5-3. Management Card Front Panel Items (Cont’d) Name State Description Action ALARMS There is no critical alarm None required. System Critical outside the shelf. A critical alarm condition exists Refer to the TL1 Reference (see outside the shelf.
  • Page 173 Maintenance Table 5-3. Management Card Front Panel Items (Cont’d) Name State Description Action ALARMS There is no critical alarm within None required. Shelf Critical the shelf. A critical alarm condition exists Refer to the TL1 Reference (see in the shelf. RTRV-ALM) to determine which critical alarm occurred and the recommended action.

  • Page 174: Ec Card

    TimeHub 5500 System Guide Table 5-3. Management Card Front Panel Items (Cont’d) Name State Description Action The local communication port If no physical connection exists, COMM PORTS is disabled. none required. Local Link If a physical connection exists, troubleshoot the cable connection.

  • Page 175: Ec Card Front Panel

    Maintenance Figure 5-4. EC Card Front Panel 097-55501-01 Issue 6 – June 2003...
  • Page 176 TimeHub 5500 System Guide Table 5-4. EC Card Front Panel Items Name State Description Action Power Power is not present. 1. If all lamps on the system are off, apply power. 2. If all lamps on the system are off, troubleshoot the –48 V power source.
  • Page 177 Maintenance Table 5-4. EC Card Front Panel Items (Cont’d) Name State Description Action Green The –48V A input is at the None required. SHELF POWER normal voltage level. –48V A Fail The –48V A input is below the Troubleshoot and repair the A normal voltage level.

  • Page 178: Card Replacement

    TimeHub 5500 System Guide 5.2 Card Replacement 5.2.1 Clock Card : Before replacing the clock card, make sure that the ARNING system has at least one clock active and is NOT operating in Passthrough mode by checking the light on the Management Card.

  • Page 179: Output Driver Card

    Maintenance Procedure 5-1. Clock Card Replacement (Cont’d) Step Action Tighten the captive screws at the top and bottom of the card front panel. End of Procedure 5.2.2 Output Driver Card To replace the output driver card, follow the steps in Procedure 5-2, and refer to Figure 5-2.

  • Page 180: Management Card Replacement

    If using an LAN connection, connect a nine-pin male-to-female RS-232 interface cable from the communication port on a computer with communications software to the Local port on the TimeHub 5500. If not, skip to Step 12. Configure the network parameters (refer to the Test chapter for details).

  • Page 181: Ec Card

    Maintenance 5.2.4 EC Card To replace the EC card, follow the steps in Procedure 5-4, and refer to Figure 5-4. Procedure 5-4. EC Card Replacement Step Action Put on a properly grounded ESD wrist strap. Using a #2 Phillips-head or Pozidrive screwdriver, loosen the captive screws at the top and bottom of the card front panel.

  • Page 182: Fuse Replacement

    TimeHub 5500 System Guide 5.3 Fuse Replacement 5.3.1 Clock Card To replace the fuse on the clock card, follow the steps in Procedure 5-5, and refer to Figures 5-1 and 5-5. Procedure 5-5. Clock Card Fuse Replacement Step Action Put on a properly grounded ESD wrist strap.
  • Page 183 Maintenance Figure 5-5. Clock Card Fuse XF1 Front Panel Fuse 097-55501-01 Issue 6 – June 2003...

  • Page 184: Output Driver Card

    TimeHub 5500 System Guide 5.3.2 Output Driver Card To replace the fuse on the output driver card, follow the steps in Procedure 5-6, and refer to Figures 5-2 and 5-6. Procedure 5-6. Output Driver Card Fuse Replacement Step Action Put on a properly grounded ESD wrist strap.

  • Page 185: Management Card

    Maintenance 5.3.3 Management Card To replace the fuse on the management card, follow the steps in Procedure 5-7, and refer to Figures 5-3 and 5-6. Procedure 5-7. Management Card Fuse Replacement Step Action If applicable, remove the cable connected to the management card. Put on a properly grounded ESD wrist strap.

  • Page 186: Ec Card

    TimeHub 5500 System Guide 5.3.4 EC Card To replace the fuse on the EC card, follow the steps in Procedure 5-8, and refer to Figures 5-4 and 5-7. Procedure 5-8. EC Card Fuse Replacement Step Action Put on a properly grounded ESD wrist strap.

  • Page 187: Ec Card Fuse F1

    Maintenance Figure 5-7. EC Card Fuse F1 Front Panel Fuse 097-55501-01 Issue 6 – June 2003...

  • Page 188: Repair And Return

    Procedure 5-9. Equipment Return Step Action Call your local Symmetricom distributor or Symmetricom’s Inside Sales (refer to the Sales subsection), and obtain a Return Material Authorization (RMA) number and shipping address. Note: Retain the RMA number for future reference. The RMA number is used by Symmetricom for internal tracking of the unit.
  • Page 189 Aguadilla, Puerto Rico 00603 Note: Repaired equipment is typically shipped within 30 days of receipt by Symmetricom, or per contract terms. Shipping costs to Symmetricom are paid by the customer; shipping costs back to the customer are paid by Symmetricom.

  • Page 190: Technical Assistance

    TimeHub 5500 System Guide 5.5 Technical Assistance For technical assistance, contact the following: Symmetricom, Inc. 2300 Orchard Parkway San Jose, CA 95131-1017 U.S.A. Call Center: 888-367-7966 (from inside U.S.A. only – toll-free) 408-428-7907 Fax: 408-428-7998 Europe, Middle East, and Africa (EMEA) Call Center:...

  • Page 191: Manual Updates

    Manual updates are available at: http://www.symmetricom.com/support/login/login.php : If you are downloading a manual for the first time, you will need to register with Symmetricom. If you are currently registered, login and download the manual update. 097-55501-01 Issue 6 – June 2003...
  • Page 192 TimeHub 5500 System Guide This page intentionally left blank. 097-55501-01 Issue 6 – June 2003...

  • Page 193: Chapter 6 Specifications

    Chapter Chapter 1 Chapter 6 Specifications This chapter includes: • Overview...

  • Page 194: Overview

    TimeHub 5500 System Guide 6.1 Overview The TimeHub 5500 equipment specifications are listed as follows. 6.1.1 Local Communication Port Connector Type: 9-pin, female D connector Connector Label: Local Connector Location: Management card (front) Rear of shelf Electrical Interface: RS-232 Baud Rate:...

  • Page 195: Expansion Link 1 Input

    Specifications 6.1.5 Expansion Link 1 Input Used to connect to the expansion shelf. 6.1.6 Expansion Link 2 Input Used to connect to the expansion shelf. 6.1.7 DS1 Inputs Connector Type: Wire-wrap pins Connector Label: DS1 REF (T, R, S) DS1 MON (T, R, S) Connector Location: Input/Alarm Connector module (rear of shelf) Number of Inputs:...

  • Page 196: Prs Reference Input

    TimeHub 5500 System Guide 6.1.8 PRS Reference Input Connector Type: Connector Label: 5/10 MHz IN Connector Location: Input/Alarm Connector card (rear of shelf) Number of Inputs: Frequency: 5 MHz or 10 MHz 50 Ω Impedance: Format: Sine or square wave Amplitude: 0.5 V p-p...

  • Page 197: Ds1 Outputs

    Specifications 6.1.10 DS1 Outputs Connector Type: Wire-wrap pins Connector Label: 1–10 (S, T, R) Connector Location: Wire-wrap panel Number of Outputs: Up to 40 protected or non-protected outputs per card Maximum of 140 per system Bit Rate: 1.544 Mb/s 100 Ω balanced Impedance: Format: Framing:...

  • Page 198: Output Alarms

    TimeHub 5500 System Guide 6.1.12 Output Alarms Connector Type: Wire-wrap pins Connector Label: OFFICE ALARMS (NC, C, NO) Connector Location: Input/Alarm Connector card (rear) Contact Type: Dry contact Severity: Critical (audible and visible) Major (audible and visible) Minor (audible and visible)

  • Page 199: Power

    Specifications 6.1.14 Power Connector Type: Terminal block Connector Labels: Return/–48V (A) Return/–48V (B) Connector Location: Rear panel Voltage: –42 V dc to –60 V dc (each connector) Current: Master/Remote Shelf: 180 W Expansion Shelf: 100 W Recommended Battery Feed Fuse: 10 A 6.1.15 Shelf Mechanical Mounting:...

  • Page 200: Wirewrap Panel Mechanical

    TimeHub 5500 System Guide 6.1.16 Wirewrap Panel Mechanical Mounting: 19 in. rack or 23 in. rack (with supplied mounting ears) Rack Mounting Position: Flush 5 in. offset Width: 16.6 in. Height: 5.25 in.: wire-wrap module type 3.5 in.: built-in wire-wrap pin type Depth: 4.6 in.
  • Page 201 Address, IP 67, 93 Alarm Cutoff pushbutton 130 Alarm LED 116 Alarms, office 130 Applications, TimeHub 5500 18 Cable, link 52, 53, 58, 59 Cables, link 53, 54, 59, 115 Card, clock 59, 113, 178 Card, EC 48, 58, 60, 115...
  • Page 202 TimeHub 5500 System Guide CCDENB keyword 37, 45 Clock card 59, 113, 178 Card, clock 113 Clock card front-panel items 156 Clock card fuse 182 Clock card lamps 127 Clock cards 109 Clock cards, Active and Standby 113 Clock cards, master shelf 58, 115...
  • Page 203 Index EXCLKGONE keyword 60 Expansion card 60 Expansion controller card 48, 60, 113, 117 Expansion controller cards 46, 60 Expansion Links 1, 2 LEDs 51 Expansion shelf 46, 53, 54, 56, 59, 60, 63, 64, 66, 67, 75, 77, 81, 114, 115, 117 Expansion shelf configuration, typical 60 Expansion shelf output settings 117 Expansion shelf outputs 114...
  • Page 204 TimeHub 5500 System Guide Keyword, CCALIGN 44, 45 Keyword, CCDEL 37, 45 keyword, CCDEL 45 Keyword, CCDENB 37, 45 Keyword, CLRPTALL 34 Keyword, CURRSSM 23, 24, 25 keyword, CURRSSM 25 Keyword, ECLKEXP 60 Keyword, EXCLKGONE 60 Keyword, MAINCLK TL1 107...
  • Page 205 Index Management card 103, 179 Management card front panel 130 Management card front-panel items 168 Management card fuse 185 Management card lamps 127 Mask, subnet 67 Master and expansion shelf output connector modules 56 Master shelf 36, 37, 38, 43, 44, 45, 46, 53, 54, 56, 59, 60, 63, 66, 67, 75, 77, 113, 115, 116, 117 Master shelf CC outputs 43 Master shelf clock cards 58, 115 Module, CC Output Connector 63...
  • Page 206 TimeHub 5500 System Guide Output driver cards 46, 48, 57, 66, 84, 116, 117, 124 Output modules 85 Output settings, expansion shelf 117 Output, CC 44, 45 Outputs, CC 43, 45, 63 Outputs, DS1 44, 63 Outputs, expansion shelf 114...
  • Page 207 Shelf, master 36, 37, 38, 43, 44, 45, 46, 53, 54, 56, 59, 60, 63, 66, 67, 75, 77, 113, 115, 116, 117 Shelf, Remote 36, 67 Shelf, remote 36, 37, 38, 63, 66, 67, 77 Shelf, TimeHub 5500 22, 90, 96 Shelves, expansion 53, 79, 81 Signal, CC 44...
  • Page 208 TimeHub 5500 System Guide This page intentionally left blank. 097-55501-01 Issue 6 – June 2003...

Table of Contents