NTP Server, ptf 3225A

1220A/26A Auto Switches

The ptf 1220A (1U) and 1226A (2U) Auto Switch is purpose designed for time and frequency applications where reliability criteria call for redundant RF and Pulse sources. Based on the latest advances in semiconductor technology, the unit accepts two input pairs consisting of an RF (sine/square) signal and a pulse (typically 1 PPS). Both primary and backup input pairs are monitored for signal health, and if either the primary RF or pulse signals are determined faulty, the unit automatically switches to the backup channel within < 3msec (typical). In addition to providing for local control from the instrument front panel, the comprehensive communications package provides status reporting and instrument control on both RS232 and Ethernet interfaces with a variety of available protocols. Range setting on the pulse and frequency inputs allows fast detection of RF signals from 20MHz and pulse ranges from 0.1second to 2 seconds, Front panel indicators include RF and fault monitoring on each of the input channels, together with active channel indication and operating mode (auto/manual). The 1226A (2&U) utilizes quad-bloc cards for additonal RF and Pulse outputs (up to 24 total).

ptf 3225A

  • Stand Alone Time Server
  • NTP support
  • Ethernet 10/100 Base T
  • 12 Channel GPS Receiver
  • Independent time acquisition from GPS
  • Ideal for e-Commerce
  • 1ms to 10ms Accuracy (typical)

Switching Characteristics

Input/Output Connections Indicators
10/100 BaseT Ethernet RJ-45 Serial RS 232 DB9 (monitor/control) Fault Amber LED
SOH DOY HH:MM:SS: Space or ? (? = In holdover, SOH = start of header) Lock Green LED
1Pulse Per Second (optional) 5 V CMOS Level into 50Ω Power Green LED
Timing Accuracy GPS Receiver 12 parallel channels
Network 1ms to 10ms(typical) Input 16 to 26 dBi antenna gain at input
from GPS Antenna.
RS232(portB) <10ms(typical) Antenna 5V supply
1PPS(opt) 5V TTL
Control/Monitor Features ENVIRONMENTAL & PHYSICAL
Ethernet NTP (port 123) Power Requirements 9V to 36V DC
TCP (port 13) Dimensions (HxWxD) 1.75″ x 9″ x 7″
UDP Operating Temp 0° to 50° C
Telnet- Relative Humidity
Interface (port 23) (non-condensing) 0 to 95%
RS 232 Console interface

For additional specifications, please download the data sheet (under documents tab)

Please select from the documents below:

Click on the data sheet download button to access the data sheet
Click on the manual download button to access the manual