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No license is granted, either expressly or by implication, estoppel, or otherwise under any Symbol Technologies, Inc., intellectual property rights. An implied license only exists for equipment, circuits, and subsystems contained in Symbol products.
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Telxon is a registered trademark of Telxon Corporation. The information contained in this manual is subject to change without notice. Telxon Corporation shall not be liable for technical or editorial omissions or mistakes in this manual nor shall it be liable for incidental or consequential damages resulting from your use of the information contained in this manual.
Regulations FCC statement This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the Federal Communications Commission (FCC) rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.
DOC statement This digital apparatus does not exceed the Class A limits for radio noise emissions from digital apparatus as outlined in the Radio Interference Regulations of the Canadian Department of Communications (DOC). The MRC-921 MicroBase’s MicroRadio is also approved for use in Canada. No license is required for operation.
Safety information Using the radio The FCC with its action in General Docket 79-144, March 13, 1985, has adopted a safety standard for human exposure to radio frequency (RF) electromagnetic energy emitted by FCC regulated equipment. Telxon subscribes to the same safety standard for the use of its products.
Disposing of nickel-cadmium batteries Nickel-cadmium batteries contain chemically active materials that are hazardous to the environment; therefore, they must be disposed of properly. Never attempt to incinerate a nickel-cadmium battery; doing so could cause it to explode. Telxon urges you to contact the Environmental Protection Agency, the Department of Natural Resources, a local hazardous waste disposal agency, or the Telxon Customer...
Refer to Appendix B for a list of manuals and their part numbers. Scope of the manual This manual provides general information on the MRC-921 MicroBase’s parts, features, and accessories. It also explains how to operate and maintain the cradle. Document conventions Cautions Cautions indicate potential damage to equipment.
Overview of the MRC-921 MicroBase Figure 1 shows a typical MRC-921 MicroBase system. The MRC-921 can support one to five PTCs, depending on the size and frequency of transactions. Figure 1. A typical MRC-921 MicroBase system PTC-921 The MRC-921 MicroBase is a communication cradle that allows a wireless MicroRadio-based scanner, such as the PTC-921, to communicate with a host.
Any additional accessories are shipped in separate boxes with their own manuals. If anything is missing or damaged, notify your Telxon sales representative. The MRC-921 comes with an internal antenna. An external antenna can be added to increase coverage. Unpacking the MRC-921 Each shipping box contains an MRC-921 MicroBase, a power pack (if ordered),...
To use the unit outside of the U.S. or Canada, you need a power pack designed for a 220-volt AC outlet. Refer to the “Troubleshooting” section on page 24 for information on possible errors. Supplying power to the MRC-921 Equipment required: A 12-volt, 800-mA power pack An electrical outlet within 6 feet (1.8 meters) of the MRC-921 providing 110 volts AC in the...
Appendix A for radio specifications. Figures 2 on the following pages show and describe the external parts of the MRC-921 MicroBase. The part listed below is internal and, therefore, is not shown in either of the figures. MicroRadio This short-range radio in the MRC-921 is used to communicate with the MicroRadio in a wireless scanner (PTC-921).
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Figure 2. The MRC-921 MicroBase (front view) 1. External antenna (optional) 8. Antenna connector 1. An external antenna can be ordered to expand the coverage of the cradle’s MicroRadio. Coverage increases from 50 ft (15.2 m) with a standard internal antenna to 100 ft (30.5 m) with an external antenna.
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Figure 3. The MRC-921 MicroBase (rear view) 1. Optional RJ-41 serial port 1. This RJ-41 serial port connects the MRC-921 via cable to a host’s RS-232 serial port for communication or configuration. Refer to the MRC-921 Technical Reference for configuration instructions. 4.
! Use the MRC-921 to recharge only PTC-921 battery packs. ! Recharging a cold battery pack can damage it. A battery pack that is not fully dis- charged takes less than 4 hours to charge. Figure 4. Recharging battery packs Battery pack contacts Recharging battery packs Follow the instructions in this section to use the...
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If the PTC bay is a trickle charger, its green LED will never light. The cradle does not indicate a full-charge state. Refer to the “Troubleshooting” sec- tion on page 24 for information on possible errors. If the PTC bay was ordered as a trickle charger, the battery pack in the PTC will take 12 to 16 hours to charge.
Appendix B for a list of available cables. ! Do not force the connectors to- gether. You could bend the pins. Refer to page 13 for details. Connecting the MRC-921 to a host The MRC-921 MicroBase can communicate with a variety of host devices, such as personal computers and point-of-sale (POS) terminals.
If it has not been configured, refer to the MRC-921 Technical Reference for configuration information. Configuring the MRC-921 Before the MRC-921 MicroBase can send data from the wireless scanner (PTC-921) to the host, the cradle must be properly configured for communication. Specifically, parameters such as the radio channel, baud rate, communication protocol, and so on need to be selected.
The default message is usually an asterisk (*). The data usually includes the PTC unit ID, the data-entry type (scanned or keyed), and the bar-code type. Refer to the MRC-921 Technical Reference for a list of messages that may display on the PTC’s screen. Communicating data After the MRC-921 has been connected to the host and properly configured, communication usually...
Maintaining the MRC-921 The MRC-921 is well constructed and durable; however, it is a precision electronic device and must be treated as such. Follow the procedures in this section to ensure reliable service. Operating conditions The MRC-921 is designed to operate in environments that are normally free of dust, dirt, and moisture.
Storing the MRC-921 Do not store the MRC-921 in temperatures below 20 degrees F ( 29 degrees C) or above 140 degrees F (60 degrees C). Do not store the MRC-921 in a damp or humid environment (over 95% noncondensing). Pack the MRC-921 in the original packing material or in a padded box and put it in a safe place away from dust, dirt, humidity, and excessive heat or cold.
Refer to page 9 for information on disposing of your nickel-cadmium battery pack. Refer to page 9 for information on disposing of your nickel-cadmium battery pack. LEDs remain on after the power-on self test Remove the spare battery pack and PTC, if present, from the MRC-921.
Refer to page 9 for information on disposing of your nickel-cadmium battery pack. Refer to page 9 for information on disposing of your nickel-cadmium battery pack. Both LEDs for the PTC are blinking Make sure the PTC is installed correctly in its bay. Exchange the battery pack in the PTC-921 with the spare battery pack.
If the PTC bay was ordered as a trickle charger, the green LED will never light. This is normal. The green LED for the PTC never lights Call your Telxon service representative. The green LED for the spare battery pack never lights Call your Telxon service representative.
Specifications Communication Host interfaces DB-9 serial port: RJ-41 serial port: Electrical Charging time Fast charger: Trickle charger: MRC-921 input voltage requirement: Environmental Operating temperature: Storage temperature: Relative humidity: Physical Capacity: Length: Width: Appendix Built-in one- or two-way 9-pin RS-232 port, up to 38.4K bps async (Optional) Built-in one- or two- way RJ-41 serial port...
Depth: Weight: Radio Type: Operating frequency: Antenna: Range Internal antenna: External antenna: 3 in/7.6 cm 10.5 oz/.3 kg MicroRadio 902.5 to 927.5 MHz Internal (standard) or external (optional) 35 to 50 feet (10.7 to 15.2 meters) 75 to 100 feet (22.9 to 30.5 meters)
asynchronous A transmission with variable time intervals between transmission successive data characters. In asynchronous communication, each data character is framed by start and stop bits. battery pack A sealed set of rechargeable nickel-cadmium batteries used in the PTC-921 and recharged by the MRC-921. The fundamental binary unit, either a 1 (on) or a 0 (off).
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signals Electronic impulses that transmit data from one device to another. two-way Exchange of information between two devices. After communication each block of data, the receiving device sends a positive or negative acknowledgment to the sending device. Volts direct current. A unit of measure of electric potential or potential difference in a unidirectional electrical current.
Accessories, part numbers, Antenna See External antenna See Internal antenna Battery pack Nickel-cadmium battery pack Cables, 19, 29 Capacity, 11, 27 Charge time, 11, 15, 17-18, 27 Charging the nickel-cadmium battery pack, 11, 17-18 time required, 11, 15, 17-18, 27 Cleaning the MRC-921, Communication, 11, 21...
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LEDs interpretation table, PTC, 13, 15, 24-26 remain on after power-on self test, Serial, spare battery pack, 13, 15, 24-26 Maintaining the MRC-921, Manuals part numbers, Messages, 11, 21 MicroRadio, 14-15 specifications, MRC-921 MicroBase capacity, 11, 27 cleaning, configuring, 16, 20 connecting to a host, handling, maintaining,...
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Radio safety information, specifications, Recharging battery packs, Regulations DOC statement, FCC regulations, FCC statement, Related publications, RF LED, RF link error, RJ-41 serial port, 16, 19 Safety information, Scope of the manual, Serial LED, Serial port, 11, 15, 16, 19 connecting to, Servicing the MRC-921, Shipping damage,...
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Telxon Corporation/3330 West Market Street, Akron, Ohio 44334/216-867-3700/800-800-8001 Part No. 18467-701-01 Printed in U.S.A.