PDU-240
The Time & Frequency Solutions Model PDU-240 offers the user modern, often requested and reliable pulse distribution features. The base unit outputs twenty-four 1PPS outputs that are transformer-coupled from the rear panel connectors to the transfer switch. Each output is a faithful reproduction of the pulse input.
A three-position front panel switch chooses automatic operation or may be used to manually select one of the two input sources. When the AUTO mode is selected the AUTO indicator will be illuminated and Input A will be used if it is available. Should Input A fail Input B will be chosen automatically. Indicators show the status of the inputs and which input has been selected.
Each of the twenty-four outputs is monitored. Should an output fail a group alarm Fault indicator will illuminate.
Features
- Wide Input Bandwidth
- Input Isolation
- Automatic & Manual Changeover
- Transformer Coupled Outputs
- Twenty four Outputs
- Front Panel Status Indicators
- Fault Discrete Inputs
- Compact 1U, 19” rack mount
Specifications
Pulse Inputs
| Number of Inputs | 2 |
| Connector Type | BNC |
| Input Amplitude | 2.5 to 10 V |
| Input Impedance | 50 / 1000 link selectable |
| Pulse | 1ppm through 10MPPS |
Fault Discrete Inputs
| Number of Inputs | 2 |
| Connector Type | DB9 |
| Input Level | Relay contact closure or TTL |
Pulse Outputs
| Pulse | 1ppm through 10MPPS |
| Number of Outputs | 24 |
| Connector Type | BNC |
| Output Amplitude | 3.3V, 5V, 10V |
| Isolation | Transformer coupled |
| Output Impedance | 50 ohms |
| Output Protection | Short-circuit proof |
Fault Sense and Transfer
| Modes | Automatic and Manual |
| Manual | Selects input A or input B |
| Automatic | Provides automatic switch from A to B should input A fail |
Indicators
| Power | Green LED |
| Input A-B Selected | Green LEDs, two |
| Input A-B Available | Green LED's, two |
| Fault | Red |
Environmental
| Temperature | |
| Operating | 0 to +50°C |
| Storage | -40 to +85°C |
| Humidity | To 95% non-condensing |
Physical
| Dimensions | 19 in. Rack Mount, 1/73 in. high (1U), 14.5 in. deep |
| Weight | 7.5 lb. typical |
Power
| Power | 115/230 VAC, 50/60 Hz |
| Power Consumption | <25 W |
EMC
| EMC Emmission | To EN50081-1 as EN55022 |
| EMC Immunity | To EN50082-1 as EN1000-4-2 ESD, IEC 801-3 HF Field, IEC 801-4 Burst |
