TDU-310
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 Number | Description | Base Model | Oscillator Type | Power Supply | Form Factor | Power Type | Output Format | No. of Outputs | Input Format | No. of Inputs |
|---|---|---|---|---|---|---|---|---|---|---|
| TDU-310-00-00-00 | Multi-Channel Time Distribution Unit | TDU-310 | N/A | Single AC | 1U | AC | 1PPS, Have Quick, BCD | 10 ea. | 1PPS, Have Quick, BCD | 2 |
| TDU-310-00-00-01 | Multi-Channel Time Distribution Unit | TDU-310 | N/A | Single DC | 1U | DC | 1PPS, Have Quick, BCD | 10 ea. | 1PPS, Have Quick, BCD | 2 |
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 |
