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Product Comparison

	Enterprise Class			Advanced Timing
	NTS-150	S200	S300	S250	S350
Time Protocols
NTP Server (v2, v3,v4)
SNTP, Time, Daytime
NTP Peering/Client
NTP Multicast Server/Client
NTP Broadcast Server/Client
NTP performance, requests/second	40	3200	7000	3200	7000
Time References (inputs)
GPS (12 channel)				(1)
NTP Peering
Dial-up internal modem (ACTS, JJY, ITU-R TF583.4)
Low Frequency Radio (WWVB, JJY, DCF77) (optional)
10MHz input
1PPS input
IRIG B AM Input
IRIG A/B/E/G/NASA36/XR3/2137 inputs (AM & DCLS)
T1/E1 input (optional)
Reference priority, user configurable
Network Security Protocols
HTTP/HTTPS/SSL
Telnet (w/disable fcn.)
SNMP V1, V2c, V3 with Custom MIB II v1	v1
DHCP (w/disable fcn.)
SSH/SCP (w/disable fcn.)
IPv6 and IPv4/IPv6
MD5 for NTP
NTP v4 Autokey (Server and Client)
RADIUS Authenticated login
1000Base-T equipped port (Gigabit)
Total number of Ethernet ports	1	3	4	3	4
User Interface
Web Interface
Vacuum florescent display/multi-line	Opt. LED
Numeric keypad
LED�s: Sync, Network, Alarm, NTP	(4)
USB
RS-232
Alarm relays
Keypad lockout
Oscillators
OCXO upgrade
Rubidium upgrade
Timing Outputs
Timing accuracy	3	2	2	2	2
Sysplex output (dedicated port)
1PPS Output
10MHz output
IRIG B AM Output
IRIG A/B/E/G/NASA36/XR2/2137 outputs (AM & DCLS)
T1/E1 output (optional)
Miscellaneous
General server status logs
Autocheck for firmware upgrades
Email alerts
Serve NTP in UTC or GPS Timescale

(1) Available without GPS (2) � 50 Nanoseconds (3) � 1 Microseconds (4) Sync and Network LEDS only
Download this Product Comparison Chart