Frequency Electronics, Inc. FEI-Zyfer, Inc.
GPS Time and Frequency Systems

Printer Friendly
Data Sheet (pdf)

Click to Download Product Data Sheet...

For Information Call

System Features:

12 Channel GPS Receiver

Oscillator Options
Ovenized Quartz
    Rubidium Atomic

Simultaneous Sinusoidal
1, 5, 10 MHz

Time Code Output
IRIG A, B or G
    Simultaneous modulated
    and DC Shift

Time Related Functions:
2 Pulse Rate Outputs
    Event Time Tag
    Event Time Trigger


GPStarplus Model 565


GPStarplus is a fully featured, off-the-shelf, compact time and frequency system providing a new level of price/performance. It provides accuracy within 100 nanoseconds of
UTC (Coordinated Universal Time). GPStarplus tracks up to eight satellites at a time. When used as a frequency standard, GPStarplus can provide 5 E-12 frequency accuracy.

GPStarplus is packaged in a 19" rack mount chassis that is only 1.75" high. The control
and operation interface is provided via RS-232 or a front panel key pad. A 2-line by 40-character backlit LCD display reports Julian time and date, as well as informing the user if
time is locked, how many satellites are being received, and other status information.
The standard power supply operates from 95 - 264 VAC at 50 - 60 Hz.

  Rear Panel View  

Power Supply
AC or DC

Optional Expansion

Event Trigger, Time Tag, 1 PPS,
Time Code, Frequency Outputs



Antennas and Accessories
   Output Specifications (a,b,c)  
  1 PPS Output, Qty 1, BNC Connector:  
 Wave Shape:  Pulse  
 Pulse Width:  2 ms  
 Level:  TTL into 50 Ω  
 Synchronization:  Rising edge on-time  
 Accuracy, Time Locked:  100 ns referenced to UTC
 Coasting, Rubidium Osc.:  4.3 μs per day
 Coasting, Quartz Osc.:  10 μs per day
 Jitter:  1 ns  
  Event Trigger Output, Qty 1, BNC Connector:  
 Wave Shape:  Pulse  
 Level:  TTL into 50 Ω  
 Start Time:  To 1 year with 100 ns resolution, selectable
 Repetition Rate:  Single-shot, or to 99 hrs, 59 min, 59.99 sec, selectable
 Pulse Width:  1 μs to 8.999999 sec., selectable
 On Time Edge:  Rising or falling, selectable
  Time Tag Input, Qty 1, BNC Connector:  
 Input Signal:  0 to +5 V into 10 kΩ  
 Input Pulse Width:  100 ns minimum rising to falling edge
 Dwell Time:  2 ms between events
 Buffer Size:  500
 Tag Rate:  500/sec maximum
  Rate Output, Qty 2, BNC Connectors:  
 Rates, Selectable:  1, 10, 100 PPS; 1, 10, 100 kPPS; 1, 5, 10 MPPS and others
 Wave Shape:  Pulse
 Level:  TTL into 50 Ω  
 On Time Edge:  Rising or falling, selectable  
  AC Time Code, Qty 1, BNC Connector:  
 Signal Type:  Modulated sine wave
 Code Format:  IRIG A, B or G user selectable
 Level:  3 V p-p into 50 Ω
  DC Time Code, Qty 1, BNC Connector:  
 Signal Type:  DC Shift
 Code Format:  Same as selected AC time code
 Output Level:  TTL into 50 Ω
  Frequency Outputs, Qty 3, BNC Connectors:  
 Wave Shape:  Sinusoid
 Amplitude:  12 dBm +/- 0.5 dBm into 50 Ω
 Frequency:  1, 5 or 10 MHz user selectable
 Harmonics:  -40 dBc
 Spurious Level:  -70 dBc
 Accuracy:  Rubidium Osc.  Quartz Osc.
 Time Locked: (d)  1E-12  1E-12
 Coasting: (per day)  2E-11  5E-10
 Short Term Stability: (1-100 sec)  5E-11  3E-10
  Phase Noise (dBc/Hz, typical):  
 1 Hz:  -80 < dBc/Hz
 10 Hz:  -100 < dBc/Hz
 100 Hz:  -105 < dBc/Hz
 1 kHz to 100 kHz:  -115 < dBc/Hz
I/O Control Port/TOD Output:
 Connector:  DA-15
 Signal Levels:  RS-232C
 I/O Control:  9600, 19200, 38400 Baud
 TOD:  9600 Baud
 Protocol:  1 Start Bit, 8 Data Bits, 1 Stop Bit, No Parity
  Discrete Outputs:  
 Connector:  DA-15 (same as Control/TOD)
 Alarm/BITE:  Open drain FET
 Time Locked:  Open drain FET
   GPS Receiver  
 Standard GPS Receiver - Civil C/A-Code:
 Type  12 channel L1
 Connector  TNC female
   Power Options  
 Available with AC or DC power:
 AC Power:  100 - 240 VAC, 50-60 Hz, 50W maximum
 DC Power:  Contact Factory
   Chassis Physical Dimensions  
 Height:  44 mm (1.75") (1U)
 Width:  4438 mm (17.25") (19" EIA Rack Mounts included with unit)
 Depth:  310 mm (12.2") including connectors
 Weight:  3.3 kg (7.2 lbs.) maximum.
 Altitude, Operating:  -60 m to 4000 m
 Altitude, Storage:  -60 m to 9000 m
 Operating Temperature:  0° C to 55° C
 Rate of Change:  10° C/Hour
 Storage  Temperature:  -40° C to +85° C
 Relative Humidity:  5 % to 95 %, non-condensing
(a) After 72 hours of GPS locked operation, fixed antenna location, antenna delays entered.
(b) At constant ambient temperature.
(c) (95 % probability).
(d) one day average

Product specifications subject to change without notice.


ISO 9001:2008 Certified
Careers | Legal | News & Events | About Us | Privacy Statement

Back to Top