TDU-310

High Output Count, High Performance Time Signal Distribution Amplifier.

The TDU-310 is a high output count, high performance time signal distribution amplifier. It is specifically designed to distribute the precise time code signals generated by military GPS receivers compliant with ICD-GPS-060.

The TDU-310 provides 10 output channels of each of three signals – 1PPS, Have Quick and 50 bit/sec BCD time code. Two independent input references are supported, with fault monitoring and switchover to a backup reference if the primary source fails. Manual override of source selection is possible via a front panel mounted switch.

The 1PPS output pulse width is set to 20 microseconds, independent of the input pulse width. The 1PPS outputs are individually selectable for either a low or 50 ohm source impedance drive into a 50 ohm load.

BCD time code outputs are available with either RS232 (single ended) or RS422 (differential) output buffers. Optical isolation between the reference sources and the TDU310 output buffers is optionally available. The TDU-310 is configured as a 1 U 19” rack mount unit.

Power supply options include 115/230 VAC, 48, 24 or 12 VDC. Power consumption is 15.6 Watts (0.13A)

Variations

Model NumberDescriptionBase ModelOscillator TypePower SupplyForm FactorPower TypeOutput FormatNo. of OutputsInput FormatNo. of Inputs
TDU-310-00-00-00Multi-Channel Time Distribution UnitTDU-310N/ASingle AC1UAC1PPS, Have Quick, BCD10 ea.1PPS, Have Quick, BCD2
TDU-310-00-00-01Multi-Channel Time Distribution UnitTDU-310N/ASingle DC1UDC1PPS, Have Quick, BCD10 ea.1PPS, Have Quick, BCD2

Features

  • Dual inputs with automatic switchover
  • 10 individually buffered outputs of 3 signal outputs
  • Have Quick, BCD and 1PPS outputs compliant with ICD-GPS-060

Specifications

1PPS Output
Number of Outputs 10
Isolation Independently Buffered
Output Amplitude 10V 0-peak or 5V 0-peak
Output Protection Short Circuit proof
Rise Time <20ns
Delay <60ns, <100ns with opto-isolator
Jitter <2ns
Connector Type BNC
Have Quick Output
Number of Outputs 10
Isolation Independently Buffered
Output Amplitude 5V 0-peak
Output Protection Short Circuit Proof
Output Impedance Optional 50 Ohm
Rise Time <20ns
Connector Type BNC
BCD Time Code Outputs
Number of Outputs 10
Isolation Independently Buffered
Output Amplitude RS232 compatible - standard
Output Amplitude RS422 compatible - optional
Output Protection Short Circuit Proof
Propagation Delay <2 microseconds
Connector Type DB25F
Inputs
Input Signals 1PPS, BCD, Have Quick Time code in accordance with ICD-GPS-060
Number of Inputs 2
Connector Type BNC
Environmental
Temperature -10 to +50 C
Humidity 95% non-condensing
Physical
Dimensions 19” rack mount, 1.75” (1U) height, 10 “ depth
Weight 11 lb. typical

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