Model 9289
Spectracom Corporation
NetClock/NTP Network Time Provider Instruction Manual
1-4
1.4
Specifications
NOTE:
The specifications listed herein are based on “standard” operation, with the unit
synchronized to GPS and with the GPS receiver in position hold.
1.4.1 Receiver
Received standard:
L1 C/A Code transmitted at 1575.42 MHz.
Satellites tracked:
Up to twelve simultaneously.
Acquisition time:
Typically <4 minutes from a cold start.
Antenna requirements:
Active antenna module, +5V, powered by the NetClock, 16 dB
gain minimum.
Antenna connector:
Type N, female.
1.4.2 RS-232 Serial Setup Interface Port
Function:
Accepts commands to locally configure the IP network parameters
for initial connectivity. Also used as the interface to the dial-out
modem (Option 03).
Connector:
DB9 female, pin assignments conform to EIA/TIA-574 standard,
data communication equipment.
Character structure:
ASCII, 9600 baud, 1 start, 8 data, 1 stop, no parity.
1.4.3 10/100 Ethernet Port
Function:
10/100 BaseT auto sensing LAN connection for NTP / SNTP and
remote monitoring, diagnostics, configuration and upgrade.
1.4.4 Protocols
supported
NTP:
NTP v4.2.0. Provides MD5 and Autokey. Stratum 1 or higher.
(RFC 1305, 4330)
Loading:
~4,000 requests per second, typical.
Clients supported:
The number of users supported depends on the class of network
and the subnet mask for the network.
A gateway greatly increases the number of users.
HTTP, HTTPS Servers:
For browser-based configuration and monitoring using Internet
Explorer 5 or Netscape 6 per RFC 1945 and 2068.
FTP:
For remote upload of system logs and RFC 959.
Logging: Syslog
SNMP:
Supports v1, v2c, and v3
Telnet:
For limited remote configuration per RFC 854.
Summary of Contents for 9289
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