Brandywine - PDU-240 24 Output Pulse Distribution Unit
- 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
The Brandywine Communications 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.
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 Emission |
To EN50081-1 as EN55022 |
|---|---|
|
EMC Immunity |
To EN50082-1 as EN1000-4-2 ESD, IEC 801-3 HF Field, IEC 801-4 Burst |
Document
More Product Information
- 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
- Allan deviation σ(τ) = 2.7×10-11 T-1/2 for long life version and σ(τ) = 8.5×10-12 T-1/2 for high performance version
- Front or Rear access connectors
- 3U high (133mm / 5.24”) — less than 200mm depth, compatible with ETSI and 19” standards
- Accuracy better than ±1×10-12 / ±5×10-13 for high performance version
- 10 MHz low noise direct output
- Programmable 1 / 5 / 10 MHz TTL output
- 10 years warranty on cesium tube (3 years for high performance version)
- Redundant DC power supply inputs
- Remote control and monitoring via RS232 (fully manageable locally and remotely using SyncView Plus management system.
- Ruggedized
- Flight Qualified
- Available with vibration-isolated OCXO or CSAC Oscillator options
- Gigabit Ethernet
- GNSS, SAASM, or M-Code supported
- Designed for GPS denied environments
- High DC power density up to 150 kW in a single bay rack-mount cabinet. Up to 240 kW in a dual bay rack.
- Fast load transient response provides protection from undesired voltage excursions.
- Fast slew rate with exceptional rise/fall times for speed-critical applications.
- Low ripple suitable for the most sensitive applications.
- Low audible noise with temperature controlled variable speed fans.
- High accuracy voltage/current measurements without external DMMs.
- Modular architecture simplifies sparing and maintenance.
The Xena B720/2400 is a 4U modular chassis that can be equipped with up to 12 Ethernet test modules to provide high port density and low power consumption.
There are 2 versions of the Xena chassis: the standard B720 and the high-performance B2400.
- 6U single slot VME form factor
- Nine digit time display
- Optional Have Quick synchronization input
- IRIG’s A and B and NASA 36 time code inputs
- 1PPS sync input
- IRIG B output
- 1PPS and time code inputs are redundant
- Single-slot including GPS option
- Zero latency time reads, microseconds through years
- External Event input (optional eight and sixteen inputs)
- Match Time output
- Programmable Heartbeat rate
- Video Time Inserter Option
- Many additional options
- Network Time Server
- Dual Redundant Version Available
- Complete Remote Network Control using Standard Web Browser
- SAASM/M-Code GPS Receiver
- 10MHz, 1PPS IRIG B, Serial and Time Codes
- Timing Accuracy 40ns rms to UTC
- 1PPS, Have Quick Inputs
See "Specifications & Details" tab for more information
- Two 120/240 V Outlets
- Circuitry rated for 20 A
- 8’ Flexible Power Cord
- Shrouded Safety Banana Jacks
- Stable footprint with non-slip feet
Brandywine Communications
Website
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