Integrated antenna character：
1. Be sensitive and stable to the tags identify.
2. Stable reading distance 1 meter.
3. Muti-tags identify, >50pcs tags.
4. Reading distance speed, >50pcs/sec.
Solve the exothermic problem completely：
1. No need for connecting any other outer radiating device. It can work without exothermic reaction in the normal indoor temperature.
2. Sustain electricity<200mA @ 3.5V (26dBm Output). Pulse peak current<260mA.
Outstanding stability:
1. 24 hours x 365 days work normally.
2. Appearance little influenced by cover, electromagnetic environment etc.
3. Wide temperature design and the temperature drift coefficient.
Good consistency:
1.the good design in consistency.
2. Choose the top level components to keep each parameters stable and consistence.
Brief and high efficient interface of hardware and software:
Peripheral circuit is very easy. The signal power, no need for extra connecting tantalum capacitor.
Installation method:
support 5pin WAFER installation.
|
Model No. |
VM-M50 |
|
Electrical parameters |
|
|
Working Voltage |
DC 3.5V – 5 V |
|
PCB size |
Pcb size：50*50mm , Ceramic antenna size：40*40mm Overall height ：8.5mm |
|
Standby current |
<80mA (EN pin high level) |
|
Operation current |
180mA @ 3.5V (26 dBm Output，25°C)。 |
|
Operating time |
<100mS。 |
|
Operation temp. |
- 20 °C - + 70 °C |
|
Storage temp. |
- 20 °C - + 85 °C |
|
Working humidity |
< 95% ( + 25 °C) |
|
Protocol |
EPCglobal UHF Class 1 Gen 2 / ISO 18000-6C |
|
Frequency |
840-960MHZ |
|
Working area support |
US, Canada and other regions following U.S. FCC Europe and other regions following ETSI EN 302 208 Mainland China;Japan;Korea;Malaysia;Taiwan |
|
Output power |
18-26 dBm |
|
Read/write range |
Read: 200-250cm; write: 10-50cm(adjusted) |
|
Output power accuracy |
+/- 1dB |
|
Output power flatness |
+/- 0.2dB |
|
Receive sensitivity |
< -70dBm |
|
Store tag peak speed |
> 50pcs/sec |
|
Tags storage capacity |
200pcs tags @ 96 bit EPC |
|
Tags RSSI |
support |
|
Communication interface |
TTL Uart interface |
|
Communication baud rate |
115200 bps（default and recommend） 38400bps |
|
Heat-dissipating method |
Air cooling(no need for out install cooling fin） |
|
FPC connector (20Pin , Pin gap 0.5mm) |
|
|
PIN |
definition |
|
1 |
GND |
|
2 |
EN(RF module enable power: HIGH(ACTIVE), LOW(POWER DOWN)) |
|
3 |
RXD (Data input, TTL level) |
|
4 |
TXD (Data output, TTL level) |
|
5 |
VCC DC3.5V-5V |
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design by：ctm design by：ctm
