The TDU-310 is a high performance time signal distribution amplifier designed to distribute the precise time and time interval (PTTI) time 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 the secondary 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 with rise times of less than 20ns in the ICD-GPS-060 mode. The 1PPS outputs are individually selectable for either a low source impedance drive into a 50 ohm load for a 10 V PPS or 50 ohm source impedance for a 5 V PPS.

BCD time code outputs are available with either RS232 (single ended) or RS422 (differential)

output buffers. 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.

The TDU-310 is designed to provide dual redundant timing signals for use in telecommunications, power utilities, and military communication applications.

• Product Specifications
• Product Data Sheet

Outputs
1PPS
No. of Outputs	10
Isolation	Independently buffered
Amplitude	10V0-Peak into 50 Ohm or 5V0-Peak into 50 Ohm load
Output Protection	Short Circuit Proof
Rise Time	<20ns
Delay	<60ns, <100ns with opto-isolator
Jitter	<2ns
Connector	BNC
Have Quick Time Code
No. of Outputs	10
Isolation	Independently buffered
Amplitude	5V0-Peak
Output Protection	Short Circuit Proof
Output Impedance	Optional 50 Ohm
Rise Time	<20ns
Connector	BNC
BCD Time Code
No of Outputs	10
Isolation	Independently Buffered
Amplitude	RS232 compatible - standard
Mark	+6 +/- 2 V
Space	-6 +/- 2V
Amplitude	RS232 compatible - optional
Output Protection	Short circuit proof
Propagation Delay	<2 microseconds
Connector	DB25F
Inputs
Inputs Signals	1PPS, BNC, Have Quick Time Code in accordance with ICD-GPS-060
No. of Input References	2
Connector	BNC
Environmental/ Physical
Temperature	Instrument -10 t0 +50°C
Humidity	95% non condensing
Power	110/230VAC
Optional	19" rack mount
Dimensions	19" W x 1.73" (1U) H x 10" D
Weight	11lb typical

TDU-310

Data Sheet