Precision Timing System

The PTS is a state of the art frequency instrument offering a wide range of features and time and frequency outputs accurate to <40ns rms to UTC(USNO) and 1×10-12 respectively.

This new generation of network appliance is economical and reliable and offers complete remote control and monitoring via a web-browser based interface.
The PTS can be used in either a single or dual redundant configuration and in conjunction with one of Brandywine Communications range of Distribution Amplifiers, such as the FTSU-100.

Applications for the popular PTS include central time and frequency systems, satellite earth stations, military communication systems, and high availability network time servers.

An extremely accurate internal Rubidium oscillator is used as the internal time base that drives all the time and frequency outputs. This Rubidium oscillator is disciplined using an advanced control algorithm, ensuring superior holdover performance. The time constants of this algorithm are user-adjustable to suit specific applications.

The PTS is available both with standard C/A code and optional P(Y) code SA-ASM GPS receiver. It may also be disciplined to an external 1PPS/HaveQuick time code source.

A 10baseT Ethernet port is provided which is used both for monitoring and control of the instrument and for Network Time Protocol. This interface supports both fixed and dynamic IP address assignment via DHCP.

In addition to configuring the PTS, the built-in web browser provides information on GPS, internal monitoring of time errors, and internal parameters of the atomic oscillator. The user may set thresholds of any monitored parameter to trigger an alarm.

A precision 1PPS time mark is available for synchronizing or calibrating other equipment and the IRIG B serial time code allows synchronization to be distributed to other computers, displays and related equipment requiring precise time.

An ASCII serial port outputs any user-selected time of day message at a 1/sec rate for synchronizing other equipment. The same output port may also be configured to output 50 bit/sec BCD time code in accordance with ICD-GPS-060.

A high stability 10MHz sine wave output provides an ultra-stable, low phase noise frequency reference derived from an SC cut crystal that is locked to the rubidium reference.


Model NumberDescriptionBase ModelOscillator TypePower SupplyForm FactorPower TypeOutput FormatInput Format
PTSGPS Precision Time System (Standard Model)PTSRubidiumSingle AC2UAC1PPS, RS232, 10 MHz, IRIG B, 50-bit BCDGPS
PTS-IRIG-INPrecision Time System with IRIG InputPTSRubidiumSingle AC2UAC1PPS, RS232, 10 MHz, IRIG B, 50-bit BCDGPS
PTS-FTSU150-BUNDLEPrecision Timing System with FTSU-150 Distribution AmplifierPTSRubidiumSingle AC2UAC1PPS, RS232, 10 MHz, IRIG B, 50-bit BCDGPS


  • Network Time Server
  • Dual Redundant Version Available
  • Complete Remote Network Control using Standard Web Browser
  • SA-ASM GPS Receiver
  • 10MHz, 1PPS IRIG B, Serial and Time Codes
  • Timing Accuracy 40ns rms to UTC
  • 1PPS, Have Quick Inputs


1PPS Output
Connector Type SMA
Signal Type 5V 0-pk, 10 microseconds wide
On Time Rising Edge
Serial Interface
Port Function Setup and Control
Connector Type DB9
Signal Type RS232
Baud Rate 300-115,200 (Default 115k N, 8, 1)
Sine Wave Outputs
Number of Outputs 1
Connector Type SMA
Frequency 10 MHz
Levels 2.5 Vpp into 50 Ohms
Phase Noise (SSB)
10 Hz <-130 dBc/Hz typical
100 Hz <-140 dBc/Hz typical
1 kHz <-150 dBc/Hz typical
Time Code 1 Output
Number of Outputs 1
Code Format (Link sel) IRIG B 1kHz or DC level
Levels 2.2 Vpp 600 Ohms HCMOS
Connector Type SMA
Time Code 2 Output
Number of Outputs 1
Code Format 50 bit BCD ICD-GPS-060 or ASCII
Level (Link Selectable) RS-232 (4,800, N, 8, 1) or BCD
Connector Type DB9
ASCII Format 1/sec user-programmable string
Fault Alarm Status
Output Type HCMOS Level
Output Polarity User programmable
Connector Type DB9
Instrument 0 to + 50°C
Antenna -40 to +85°C
Humidity To 95% non-condensing
Dimensions 3.25” x 7.25”x 15.8”
With Rack Mount Adapter 19" Rack Mount, 3.48" (2U) height, 15.80” depth in rack
Weight 5.5 lbs. typical
Power 110/230V AC
Optional 24 VDC, -48 VDC, 125 VDC

Resources & Downloads

Data Sheets