Appendix A

S100 Specifications

Note: The GPS antenna described in this manual has been replaced as described in “Appendix E” on page 141.

S100 Data Sheet Specifications

Component

Specifics

Description

 

 

 

 

 

 

Network Interface

Ethernet over 10/100Base-T

IEEE 802.3 specifications

 

 

 

 

Connection

Dual 10/100BaseT, Twisted Pair RJ45

 

 

 

 

Time Protocols

NTP v2 (RFC 1119), NTP v3 (RFC 1305), NTP

 

 

v4 (IETF Draft Standard), SNTP (RFC 2030),

 

 

Time Protocol (RFC 868), Daytime Protocol

 

 

(RFC 867) IRIG-B (120,122,123)

 

 

 

 

Supported Protocols

SNMP v3, TCP/IP, MD5 Authentication (NTP),

 

 

SNMP v1 (RFC 1157), DHCP (RFC 2131), SSH

 

 

(Secure Shell), HTTP/HTML/HTTPS (RFC

 

 

2616)

 

 

 

Serial Connection

Serial Port

RS-232/DB9 DTE

 

 

 

Software

Time Utility (MS Windows)

SymmTime™ (www.ntp-systems.com/

 

 

symmtime.asp)

 

 

 

Timing Accuracy

Network

1–10 milliseconds, typical

 

 

 

 

GPS

<1 microsecond ( relative to UTC, GPS

 

 

tracking)

 

 

 

 

Dial-up service

<1-10 milliseconds, on sync

 

 

 

 

Oscillator

Rate stability: 5 x 10-7

 

 

 

GPS Input

Channels and Frequency

Eight, C/A code

 

 

 

 

Cable Type

50 feet (15.25m) /RG58

 

 

 

 

Antenna

Size: 3.04”d x 2.94”h (7.72cm x 7.47cm)

 

 

Operating temperature: -40°C to +85°C

 

 

Acquisition <5 minutes

 

 

 

Chassis

A/C Power In

100–240VAC, Auto-switching 50-60 Hz

 

 

 

 

Size and Weight

1.75”H x 17.0”W x 18”D (4.45cm x 43.2cm x

 

 

45.7cm)

 

 

1U Height Rack Mount, 18 lbs. (8.2Kg)

 

 

 

S100 User Guide – Rev. D – June 2005

119

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Symmetricom manual S100 Specifications, Appendix a, S100 Data Sheet Specifications, Component Specifics Description