Symmetricom 1100 User Manual

Chapter 3 Installing the TimeProvider

Environmental Requirements
To prevent the unit from interfering with other equipment, install and operate the unit 
according to the following guidelines:

Use only shielded cable for all signal wiring, including I/O, clocks and Ethernet, 
and ground appropriately at both ends, or as required by local standards.

Secure all cable screws to their corresponding connectors.

These standard tools and materials are not supplied, but may be required for 
installing the TimeProvider:

Standard tool kit

ESD wrist strap

Cable ties, waxed string or acceptable cable clamps

No. 16 AWG (minimum) wire (1.31 mm

2

) for –48 V DC, return, and Frame 

Ground

Telecom signal wiring (including I/O, clock, and Ethernet) uses shielded cabling 
of the appropriate impedance required by the specific signal type

Mating connectors for terminating signal wiring

For wire-wrap connections only: No. 22 AWG (0.326 mm

2

) shielded twisted pair 

wire-wrap cable of the appropriate impedance for the specific signal 
requirements

Wire-wrap tool (wire-wrap modules only)

Fasteners for mounting the equipment in rack

Digital Voltmeter (DVM) for verifying power connections

Soldering iron and solder for alarm connectors and the ETSI-version power 
connectors

DB-9 M to DB-9 F cable for connecting to the local Craft port

Laptop computer with communications software such as HyperTerminal, 
ProComm Plus, etc. for provisioning the TimeProvider

Optional dual-channel oscilloscope with 100 MHz minimum bandwidth for 
verifying input and output signals and waveforms

Caution: To avoid interference to the TimeProvider, you must 
consider the electromagnetic compatibility (EMC) of nearby 
equipment when preparing to install the TimeProvider. 

Electromagnetic interference can adversely affect the operation 
of nearby equipment.