HTRM440/AIE,122 NXP Semiconductors, HTRM440/AIE,122 Datasheet - Page 11

• Manufacturer Part Number: HTRM440/AIE,122
• Description: RFID HITAG PROX MODULE RS232
• Manufacturer: NXP Semiconductors
• Series: HITAG® Proximityr

Specifications of HTRM440/AIE,122

• Rf Type: Read Only
• Frequency: 125kHz
• Features: HITAG Transponders
• Package / Case: 108mm x 60mm x 20mm, RS232
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• Other names: 568-2208; 935233870122; HTRM440/AIE

Philips Semiconductors
10 APPLICATION INFORMATION
10.1
The communication range is impaired by metallic
environment and electromagnetic interferences
(e.g. monitors and keyboards). Therefore, you should
keep a distance of at least the antenna’s diameter to
metallic surfaces or loops as well as to electromagnetic
interferences. If this is not possible, you have to take
preventive measures such as using ferrites or shielding for
transponder and antenna.
10.2
In order to be able to operate two systems side by side
without negative influence on communication ranges, you
must place the antennas at a minimum distance of four
times the antenna diameter. If you place them at a closer
distance be sure to use suitable shielding or
synchronisation.
10.3
The following error list should be checked if any error
(e.g. read or write distances that do not reach the specified
values) occurs:
11 SURVEY OF REFERENCED DOCUMENTS
2001 Oct 04
Data sheet
Application note
Power supply cable not mounted correctly
DC power supply voltage not in the specified range from
9 to 16 V
Serial interface not connected correctly
HITAG proximity reader module
hardware
CATEGORY
Metallic environment, interferences
Distance between two antennas
Possible sources of errors by connecting the
HTRM440
“HTCM400, HTRM440 Family, HTRM800 Family Interface Protocol Reader - Host”
“HT1 (resp. HT2) Transponder family, reliability and integrity of data transmission”
11
Interference received by the antenna because of an
external noise source (e.g. monitor, keyboards); the
remedial measure is to remove the antenna from the
interfering area
Connecting cables of the antenna changed by mistake
Antenna is mounted in metal environment; the remedial
measure is to mount a non-metal space keeper between
the antenna and the metal
Antenna is not designed following the design
instructions
Inductance of the antenna is too high
Quality factor of the antenna is too high (Q > 40)
Antenna current is too high
Antenna voltage is too high.
TITLE
HTRM440 family
Product specification