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CS203X-2 EPC Class 1 Gen 2 RFID
Reader User’s Manual
Version 2.0
CSL: The One-Stop-Shop for RFID Solutions
FCC and FCC Statement
FCC regulatory conformance
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference.
(2) This device must accept any interference received, including interference that may cause undesired operation.
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
– Reorient or relocate the receiving antenna.
– Increase the separation between the equipment and receiver.
-Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
-Consult the dealer or an experienced radio/TV technician for help
NOTE: The manufacturer is not responsible for any radio or TV interference caused by unauthorized modifications to this equipment. Such modifications could void the user’s authority to operate the equipment.
RF Exposure
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 30 cm between the radiator and your body. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.
IC regulatory conformance This device complies with CAN ICES-3 (B)/NMB-3(B). This device complies with Industry Canada licence-exempt RSS standard(s).|
Operation is subject to the following two conditions:
- this device may not cause harmful interference, and
- this device must accept any interference received, including interference that may cause undesired operation.
RF Exposure
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 30 cm between the radiator and your body. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.
Introduction to Features
3.1 CS203X-2 RFID Fixed Reader
The CS203X-2 RFID fixed reader is a reader designed to work with any personal computer via the ethernet connection, where the application on the PCs would control the CS203X-2 reader to perform RFID tag reading and GPIO port ON/OFF operation. The below photo shows the typical connection during the operation of the CS203X-2 fixed reader
Note: DO NOT use any antenna not included in the shipment package or specify within the product manual. Use only the Power Adaptor Unit included in the package.
Product Package
3.2.1 Basic Package Content
The reader package contains:
- A CS203X-2 fixed reader
- Power Adaptor Unit
- Ethernet Cable 1 piece
Product Specification
Figure 3-1 CS203X-2 Fixed Reader
Features:
- ISO 18000-6C and EPCglobal Class 1 Gen 2 UHF RFID protocol compliant including dense reader mode
- Ultra-long read range peak at more than 18 meters for Monza R6 Dogbone tag
- Sophisticated data handling for efficient management of large streams of tag data.
- Highly configurable buffering and tag filtering modes to eliminate the redundant tag data so as to reduce LAN traffic and server loading
- Robust performance in dense-reader environments
- Excellent in transmitting and receive mode generates a different combination of unique reader-to-tag command rate, tag-to-reader backscatter rate, modulation format, and backscatter type
- Configurable parameters offer maximum throughput and optimal performance
- Supports all Gen 2 commands, including write, lock, and kill
Specifications:
| Physical Characteristics: | Length: 26.5 cm; Width: 26.5 cm; Height: 12 cm; Weight: 4180 grams |
| Lin it ()meth: | Operating Temp: -20°C to 50°C Storage Temp: -40°C to 85°C Humidity. 5% to 95% non-condensing |
| Antenna: | The external antenna has an RP-SMA male connector |
| RF Power: | Internal conducted power 30 dBm |
| EIRP Power: | 35 dBm (max.) |
| RFID Frequency Ranges: | 902 -928 MHz band |
| Connectivity | Ethernet, Debug Serial(RS232) |
| Accessories: | Ethernet cable GPIO cable |
| Order Code: | CS203X-2 |
| Restrictions on Use: | Approvals, features, and parameters may vary depending on country legislation and may change without notice |
Introduction to Application
4.1 Basic Hardware
The CSL CS203X-2 RFID Reader is an EPCglobal Class 1 Gen 2 handheld reader product. Below is the front view of the CS203X-2 reader. There are LEDs at side to indicate the operating status
- Power On
- RFID Read
- Active antenna port being selected (default internal)

Figure 4-1 CS203X-2 Reader Front-side View
Below is the bottom-side views of the CS203X-2 reader.
Figure 4-2 : CS203X-2 Reader bottom-side View

4-3 : CS203X-2 Reader Left-side
Figure 4-5: CS203X-2 Reader Rear-side View
Power Supply
- Power Adaptor Unit
CS203X-2 reader can be powered up with the power adaptor unit included in the package. This will guarantee that the CS203X-2 reader can operate in optimal condition with its internal built-in patch antenna. Below show the typical connection to use the power adaptor.
- PoE+ Switch
CS203X-2 also supports the use of a Power over Ethernet (PoE+) switch. Below shows the typical connection of using PoE as the power supply to the CS203X-2 reader.
4.3 Demo Software on PC
The CS203X-2 can be controlled via the Ethernet. In this case, the user needs to connect the PC with CS203X-2 with an Ethernet cable directly or via a router. Below is the screen capture of a Demo application, which is also available for download from the Convergence website (www.convergence.com.hk), on a PC controlling CS203X-2. Everything is self-explanatory in the application:
Figure 4-6 PC Application Screen controlling CS203X-2 via ethernet
Below shows the main menu of the PC Demo application. Users can perform typical basic tag operations via this PC Demo application as mentioned below.
- Inventory
- Tag memory bank read and write
- GPIO On/Off control
- Antenna port settings
- Output power settings

Fig 4-7 Main menu of PC Demo application
For example, if the user needs to carry out an inventory operation, it is necessary to click the “Inventory” icon in Fig 4-7. The corresponding sub-menu has been shown in Fig 4-8 below.
Fig 4-8 Inventory operation using the PC Demo application
4.4 GPIO Port Signals
The below figure shows the output and input signals for the GPIO signals. GPI: Input ports GPO: Output ports
Fig 4-9 GPIO Input and Output signals
Appendix A. Frequency Channel Table
FCC Band Channels
| Channel number | Frequency (MHz) | Channel number | Frequency (MHz) | Channel number | Free (MHZ) |
| I | 903. | 18 | 911. | 35 | 920. |
| I _ | 903. | 19 | 912. | 36 | 920. |
| 904. | 20 | 912. | 37 | 921. | |
| 4 | 904. | 21 | 913. | 38 | 921. |
| 5 | 905. | 22 | 913. | 39 | 922. |
| o | 905. | 23 | 914. | 40 | 922. |
| 7 | 906. | 24 | 914. | 41 | 923. |
| 8 | 906. | 25 | 915. | 42 | 923. |
| 9 | 907. | 26 | 915. | 43 | 924. |
| 10 | 907. | 27 | 916. | 44 | 924. |
| 11 | 908. | 28 | 916. | 45 | 925. |
| 12 | 908. | 29 | 917. | 46 | 925. |
| 13 | 909. | 30 | 917. | 47 | 926. |
| 14 | 909. | 31 | 918. | 48 | 926. |
| 15 | 910. | 32 | 918. | 49 | 927. |
| 16 | 910. | 33 | 919. | 50 | 927. |
| 17 | 911. | 34 | 919. |
Appendix B. Link Profiles of CS203X-2
RFID Reader
| R-T Modulation | DSB-ASK | PR-ASK | PR-ASK | DSB-ASK |
| Tari (ps) | 25.00 | 25.00 | 25.00 | 6. |
| X | 1.00 | 0.50 | 0.50 | 0.50 |
| PW (Pulse Width in use) | 12.50 | 12.50 | 12.50 | 3. |
| Racal (used) | 75.00 | 62.50 | 62.50 | 16. |
| trial (used) | 200.00 | 85. | 71. | 20.00 |
| DR (Divide Ratio) | 8 | 64/3 | 64/3 | 8 |
| T-R Modulation | FMO | Miller-4 | Miller-4 | FMO |
| text | 1 | 1 | 1 | 1 |
| LF (kbps) | 40 | 250 | 300 | 400 |
| Data Rate (kbps) | 40 | 63. | 75 | 400 |
Appendix C. Antenna ports operation description
CS203X-2 is a reader where the ports are switched on in time one by one. At any time only 1 port is switched on and the RF power comes out only at that port. The rest of the ports are turned off so that no energy comes out from the other ports.
| Time Slot | Antenna Port Status | |
| Port 1 | Port 2 | |
| 1 | On | Off |
| 2 | Off | On |
The Antenna should be set up 0.5 meters apart is shown as below: 0.5 meter
The energy coming out of 1 antenna (note that CS203X-2 is switched on in time one by one so that at any 1 moment in time ONLY 1 antenna is



















