PDR 121 Serial & Ethernet Wireless Modem
The Radius PDR 121 is an advanced digital data radio modem designed to offer wide area coverage for remote control telemetry and SCADA type network applications. The interface is via an RS232 port for data connection. The data radio can offer up to 19.2kbps on air data rate and is designed for both point-to- multipoint data telemetry networks and peer-to-peer networks in the VHF and UHF bands.
Benefits
- Collision Avoidence Technology
- Forward Error Correction
- 128 Bit Encryption
- Remote Diagnostics & Programming
- Adjustable Power
- Exceptional Reciever Sensitivity
- Selectable Master/Slave/Repeater Mode
- Remote Frequency Change
- Test/ Maintenance Functions
- Message Routing
- Real Time Radio System Monitoring
- Ethernet Port (TCP, UDP, IP, SNMP)
- Dual RS232 Ports (High Data Rate)
Communication Range
The PDR 121 Wireless Data Radio Modem is designed to give large area communication coverage. The PDR is used in systems were it is achieving distances of up to 50km at VHF and 30km at UHF, and because of its unique message routing, many of its networks are covering several 1,000km2.
Data Interface
The PDR supports two serial ports and one Ethernet port, allowing a variety of equipment to be connected to it. It is also possible to mix connections in the system, so that the Master site could run IP and the slave sites either IP or RS232.
Secure and Reliable
The PDR 121 data radio supports event triggered communication and has in-built collision management to maximize network throughput. The data radio can provide 128 bit encryption and provide FEC (Forward Error Correction) with inter-leaving that can recover even badly corrupted data messages. Receiver sensitivity is very high allowing exceptional recovery of signals.
Protocol Support
A list of available protocols such as DNP3, IEC870, MODBUS, Comli, Cooper 2179 etc are built in to the data radio menu, however if the protocol you need is not in the list, the menu allows you to configure the data radio to run the protocol you wish to use.
Radio Network Management
The PDR collects information about the Receiver Signal Strength, the Supply Voltage and the Temperature of each slave data radio modem and this can be displayed in real-time using the RND 100 software.
Glossary of Terms
Some of the terms and abbreviations used on the website may be unfamiliar if you are new to digital radio systems. Click here to see a glossary of terms explains many of the terms used in explaining our products.
Design your own Network!
The following pages give reference to general radio networking equipment, terms and how to calculate a "radio link budget". The information can be useful when planning a radio network, but is not essential for using the PDR 121. Please click here for further information.
|
Technical Information |
|
|
Radio Transceiver |
|
|
Data Rates |
4800/9600 @ 12.5 KHz |
|
Frequency Ranges |
UHF 470 to 510 MHz |
|
Operation Modes |
Half duplex, simplex |
|
Modulation |
4 LFSK |
|
Forward Error Correction |
Yes, interleaving functionality |
|
Collision Avoidance |
Yes, configurable |
|
Repeating |
PDR 121 - Multi-repeating, up to 6 repeaters on one like |
|
No. of Remote Radios / Masters |
PDR 121 - 99 |
|
Encryption |
128-bit key XTEA cypher 32 character encryption key (PDR 121 only) |
| Radio Transmitter | |
| Tx Power | 10 mW to 5.0 W adjustable |
| Radio Receiver | |
| Sensitivity |
-110 to -119 dBM @ BER <10-6 depending |
| Networking Diagnostics | |
| PDR 121 & 221 | Software package Radius RND 100 gives RSSI, temperature etc. |
| Environmental | |
| Temperature Operating Range |
-25oC to +75oC |
| Physical Dimensions | |
| Size PDR 121 & 221 | H40 x W193 x D115 mm H1.6 x W7.6 x D4.5 inch |
| Weight | 800g (1.76lb) |
| Housing Material | Aluminium |
| Connectors | |
| Main Power Supply | 12 V 2 pole, female |
| Battery Supply | 12 V 2 pole, female (UHF only) |
| Antenna | BNC, female |
| Serial Port |
2 x RS 232 DB9 female, wired as DCE (modem) |
| Ethernet Port | TCP/IP, UDP/IP, SNMP |
| Configuration | Via RS232 port. |
| Indications (LED) | |
| LED Indicators | Main PWR, Radio R, Radio Tx, RS232 Rx, RS232 Tx, Configuration Mode, Carrier Detect, System Setect |
| Protocols | |
| PDR 121 | DNP3, IEC 870, RP570, COMLI, Modbus, Cooper/PG&E 2179 Telegyr 8979, DCSI, HUnt, Exoline, cactus, PRIP, Aquacom. Other protocols are avaliable upon request |
| PDR 221 | Transparent, Manage nearly all current data protocols |
| Configuration Interface | |
| Configuration Software | Standard Windows Terminal Software |
| Data Rate | Selectable 1200/9600/57600 bps |
Downloads
PDR Product Brochure (A4) (PDF 1.8 MB) Download time approx. 9m 21s at 28 Kbps Download time approx. 5m 41s at 56 Kbps Download time approx. 2m 3s at 128 Kbps Download time approx. 0m 30s at 512 Kbps
PDR Product Brochure (A4) (German) (PDF 1.8 MB) Download time approx. 9m 23s at 28 Kbps Download time approx. 5m 41s at 56 Kbps Download time approx. 2m 4s at 128 Kbps Download time approx. 0m 30s at 512 Kbps
PDR Product Brochure (A4) (Russian) read only (PDF 2.6 MB) Download time approx. 13m 22s at 28 Kbps Download time approx. 7m 41s at 56 Kbps Download time approx. 3m 56s at 128 Kbps Download time approx. 1m 43s at 512 Kbps
Communication Product Brochure Russian (A4) read only (PDF 3.6 MB) Download time approx. 18m 2s at 28 Kbps Download time approx. 9m 1s at 56 Kbps Download time approx. 4m 58s at 128 Kbps Download time approx. 1m 58s at 512 Kbps
