Linx MDEV-868-NT Скачать руководство пользователя страница 7 | Manualshive

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Linx MDEV-868-NT Скачать руководство пользователя страница 7

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– –

8

9

1. 2.00V/div

2. 2.00V/div

2ms/div

1

2

VCC

READY

4.67ms

1. 2.00V/div

2. 2.00V/div

2ms/div

1

2

VCC

READY

4.71ms

1. 2.00V/div

2. 2.00V/div

500µs/div

1

2

STANDBY

READY

570µs

1. 2.00V/div

2. 2.00V/div

500µs/div

1

2

STANDBY

READY

630µs

1. 2.00V/div

2. 2.00V/div

500µs/div

1

2

T/R_SEL

READY

690µs

Figure 11: NT Series Transceiver RSSI Voltage vs. Input Power

Figure 12: NT Series Transceiver Receiver Turn-On Time from VCC

Figure 13: NT Series Transceiver Turn-On Time from VCC

Figure 14: NT Series Transceiver Turn-On Time from Standby

Figure 15: NT Series Transceiver Transmitter Turn-On Time from Standby

Figure 16: NT Series Transceiver TX to RX Change Time

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Содержание MDEV-868-NT

Страница 1: ...NT Series Transceiver Module Data Guide...

Страница 2: ...e to RF interference that can prevent communication RF products without frequency agility or hopping implemented are more subject to interference This module does not have frequency agility built in b...

Страница 3: ...figuration also giving access to additional features The modules are capable of generating 12 5dBm into 50 ohms and have a typical sensitivity of 113dBm Housed in a compact reflow compatible SMD packa...

Страница 4: ...4 300 kHz 4 11 Spurious Emissions 62 dBm Receiver Sensitivity Baud Band 1 111 113 dBm 5 11 Baud Band 2 108 110 dBm 5 11 Baud Band 3 104 106 dBm 5 11 Baud Band 4 100 102 dBm 5 11 Electrical Specificat...

Страница 5: ...Notes RSSI Dynamic Range 60 dB Transmitter Section Output Power PO 15 5 12 5 dBm 6 Output Power Control Range 28 dB Harmonic Emissions PH 42 36 dBc 7 Frequency Deviation Baud Band 1 30 kHz 3 11 Baud...

Страница 6: ...5 5 RX Icc mA Supply Voltage V 40 C 25 C 85 C 14 15 16 17 2 5 3 5 4 5 5 5 TX Icc mA Supply Voltage V 40 C 25 C 85 C Figure 5 NT Series Transceiver Output Power vs LVL_ADJ Resistance Figure 6 NT Serie...

Страница 7: ...630 s 1 2 00V div 2 2 00V div 500 s div 1 2 T R_SEL READY 690 s Figure 11 NT Series Transceiver RSSI Voltage vs Input Power Figure 12 NT Series Transceiver Receiver Turn On Time from VCC Figure 13 NT...

Страница 8: ...operation in the 863 870MHz and 902 928MHz frequency bands The RF synthesizer contains a VCO and a low noise fractional N PLL The VCO operates at two times the fundamental frequency to reduce spurious...

Страница 9: ...gh or leave open for the high est power connect to GND through a resistor to lower the power 15 READY Ready This line is low when the transceiver is ready to communicate and high when it is busy This...

Страница 10: ...ecture eliminates such considerations and allows virtually any signal including PWM Manchester and NRZ data to be sent at rates from 1kbps to 300kbps The Data Output Receive Mode is enabled when the T...

Страница 11: ...ine so that they are lowered when POWER_DOWN is lowered Using the READY Output The Ready READY line can be used to monitor the status of the module It is logic high while the transceiver is busy and l...

Страница 12: ...roller lines or hardwired The 868MHz channels are shown in Figure 25 and the 900MHz channels are shown in Figure 26 Baud Band Selection Baud Band BAUD1 BAUD0 Baud Rate kbps IF Bandwidth kHz Receiver S...

Страница 13: ...1 for the full requirements 900MHz Channel Selection CHN_SEL2 CHN_SEL1 CHN_SEL0 CHANNEL FREQUENCY 0 0 0 3 903 37 0 0 1 15 906 37 0 1 0 21 907 87 0 1 1 27 909 37 1 0 0 39 912 37 1 0 1 51 915 37 1 1 0...

Страница 14: ...C GND GND GND VCC GND GND GPIO GPIO GPIO GPIO GPIO GPIO GPIO GND GND 1 1 1 1 2 2 1 1 1 1 1 1 2 GND GND GND GND GND GND Figure 29 NT Series Transceiver Typical Application NT Series Transceiver 900MHz...

Страница 15: ...onal details are in Application Note AN 00500 Figure 47 The transceiver includes a U FL connector as well as a line for the antenna connection This offers the designer a great deal of flexibility in a...

Страница 16: ...better understanding its characteristics Interference may come from internal or external sources The first step is to eliminate interference from noise sources on the board This means paying careful a...

Страница 17: ...ly under the module There should not be any copper or traces under the module on the same layer as the module just bare PCB The underside of the module has traces and vias that could short or couple t...

Страница 18: ...mbly process is the reflow stage The reflow profile in Figure 37 should not be exceeded because excessive temperatures or transport times during reflow will irreparably damage the modules Assembly per...

Страница 19: ...d configuration constraints In these instances a designer must make the best use of the area available to create as much ground OPTIMUM USABLE NOT RECOMMENDED NUT GROUND PLANE MAY BE NEEDED CASE Figur...

Страница 20: ...ecialty Styles Linx offers a wide variety of specialized antenna styles Figure 43 Many of these styles utilize helical elements to reduce the overall antenna size while maintaining reasonable performa...

Страница 21: ...testing laboratories across the country Many labs can also provide other certifications that the product may require at the same time such as UL CLASS A B etc Once the completed product has passed an...

Страница 22: ...SEARCH RF OPTIONS CHOOSE LINX MODULE ORDER EVALUATION KIT S TEST MODULE S WITH BASIC HOOKUP INTERFACE TO CHOSEN CIRCUIT AND DEBUG CONSULT LINX REGARDING ANTENNA OPTIONS AND DESIGN LAY OUT BOARD SEND P...

Страница 23: ...stomer including without limitation breach of contract breach of warranty strict liability or negligence Customer assumes all liability including without limitation liability for injury to person or p...

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