Features: | TM1000A | TM2000A | TM2000B | TM2500B |
Source of Time Served | US GPS satellites | US GPS satellites | US GPS satellites | US GPS satellites |
Stratum Level | Stratum 1 (GPS) | Stratum 1 (GPS) | Stratum 1 (GPS) | Stratum 1 (GPS) |
NTP requests per second | >350 | >750 | >750 | >750 |
NTP Authentication | NO | MD5/SHA1 | MD5/SHA1 | MD5/SHA1 |
Manual Time Setting | NO | YES | YES | YES |
Peer NTP Updates | NO | YES | YES | YES |
SNMP Management | NO | V2/V3 | V2/V3 | V2/V3 |
Web-Based Setup | YES | YES | YES | YES |
Network Interface Speed | 10/100 | 10/100 + HW Time Stamp | 10/100 + HW Time Stamp | 10/100 + HW Time Stamp |
Time Protocols Supported | NTP (v1-v4) | NTP (v1-v4)/PTP v2 | NTP (v1-v4)/PTP v2 | NTP (v1-v4)/PTP v2 |
Internal Osciallator/Holdover Time Source | NO | OCXO 20ppb | OCXO 20ppb | OCXO 20ppb |
Improved Holdover Accuracy | N/A | NO | YES | YES |
Precision Time Protocol, Unicast and Multicast | NO | YES | YES | YES |
Linux Embedded OS | NO | YES | YES | YES |
GPS Lock Requirement | 2D | 3D (optional 2D) | 3D (optional 2D) | 3D (optional 2D) |
NMEA Output | YES | NO | YES | YES |
1 PPS OUTPUT | YES | NO | NO | YES (if 10 MHz output is not used) |
10 MHz OUTPUT | NO | NO | NO | YES (if 1 PPS output is not used) |
Verizon eFemto Compatible | NO | NO | NO | NO |