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Usage Guidelines for FCC Compliance

The TT Series module is provided with an FCC and Industry Canada 
Modular Certification. This certification shows that the module meets the 
requirements of FCC Part 15 and Industry Canada license-exempt RSS 
standards for an intentional radiator. The integrator does not need to 
conduct any further intentional radiator testing under these rules provided 
that the following guidelines are met:

• 

An approved antenna must be directly coupled to the module’s U.FL 
connector through an approved coaxial extension cable.

• 

Alternate antennas can be used, but may require the integrator to 
perform certification testing.

• 

The module must not be modified in any way. Coupling of external 
circuitry must not bypass the provided connectors.

• 

End product must be externally labeled with “Contains FCC ID: 
OJMTRM900TTA / IC: 5840A-TRM900TTA”. 

• 

The end product’s user’s manual must contain an FCC statement 
equivalent to that listed on page 33 of this data guide.

• 

The antenna used for this transceiver must not be co-located or 
operating in conjunction with any other antenna or transmitter.

• 

The integrator must not provide any information to the end-user on 
how to install or remove the module from the end-product.

Any changes or modifications not expressly approved by Linx Technologies 
could void the user’s authority to operate the equipment.

Additional Testing Requirements

The modules have been tested for compliance as an intentional radiator, 
but the integrator is required to perform unintentional radiator testing 
on the final product per FCC sections 15.107 and 15.109 and Industry 
Canada license-exempt RSS standards. Additional product-specific testing 
might be required. Please contact the FCC or Industry Canada regarding 
regulatory requirements for the application. Ultimately is it the integrator’s 
responsibility to show that their product complies with the regulations 
applicable to their product.

Note:

 The integrator is required to perform unintentional radiator testing 

on the final product per FCC sections 15.107 and 15.109 and IC 
RSS-GEN.

Information to the user

The following information must be included in the product’s user manual.

FCC / IC NOTICES

This product contains FCC ID: OJMTRM900TTA / IC: 5840A-TRM900TTA

This device complies with Part 15 of the FCC rules and Industry Canada 
license-exempt RSS standards. Operation of this device is subject to the 
following two conditions:

1.  This device may not cause harmful interference, and
2.  this device must accept any interference received, including interference that 

may cause undesired operation.

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.

Any modifications could void the user’s authority to operate the equipment.

Le présent appareil est conforme aux CNR d’Industrie Canada applicables 
aux appareils radio exempts de licence. L’exploitation est autorisée aux deux 
conditions suivantes:

1.  l’appareil ne doit pas produire de brouillage, et 
2.  ’utilisateur de l’appareil doit accepter tout brouillage radioélectrique subi, 

même si le brouillage est susceptible d’en compromettre le fonctionnement.

Summary of Contents for EVAL-900-TT

Page 1: ...TT Series Remote Control and Sensor Transceiver Data Guide...

Page 2: ...RF products must understand and must use all appropriate safety procedures in connection with the devices including without limitation using appropriate safety procedures to prevent inadvertent trigg...

Page 3: ...nfiguration is provided by a UART interface however no programming is required for basic operation Housed in a compact reflow compatible SMD package the transceiver requires no external RF components...

Page 4: ...ransceivers are supplied in tubes of 18 pcs Figure 2 Ordering Information TT Series Transceiver Specifications Parameter Symbol Min Typ Max Units Notes Receiver Section Spurious Emissions Per FCC 15 1...

Page 5: ...TX MODE_IND RX Sx A B C D E F G H RX MODE_IND AB TX Power up Response 80ms BC RX Initial Response 8 to 50ms with no interference CD Data Settle 4 to 8us EF Data Update Delay During Active Session 5 to...

Page 6: ...m 85 C 25 C 40 C Figure 7 TT Series Transceiver Peak Current Consumption vs Transmitter Output Power at 3 3V Figure 9 TT Series Transceiver Average Current Consumption vs Transmitter Output Power at 3...

Page 7: ...A Supply Voltage V 85 C 25 C 40 C Figure 11 TT Series Transceiver TX Current Consumption vs Supply Voltage at Max Power Figure 13 TT Series Transceiver Transmitter Output Power vs Supply Voltage 11 11...

Page 8: ...Voltage Figure 17 TT Series Transceiver RSSI Voltage vs Input Power 0 1 1 10 0 15 30 45 60 75 90 105 120 135 150 165 180 195 210 225 240 255 Average Current mA Duty Cycle s 2 5VDC 3 0VDC 3 3VDC 5 0VD...

Page 9: ...be left unconnected 21 RSSI O Received Signal Strength Indicator This line outputs an analog voltage that increases with the strength of the received signal It is updated once a second 24 POWER_DOWN...

Page 10: ...DIVIDER MODULATOR GAUSSIAN FILTER fDEV DIVIDER LNA ANTENNA GPIO INTERFACE LDO VCC PDN INTERFACE VOLTAGE TRANSLATION Figure 20 TT Series Transceiver RF Section Block Diagram Module Description The TT S...

Page 11: ...more advanced features that are available with the serial interface 1 TRM XXX TT NC 2 GND 3 NC 4 NC 5 GND 6 NC 7 S0 9 S1 10 GND 11 S7 18 S6 19 RSSI 21 GND 22 GND 23 POWER_DOWN 24 VCC 25 S5 26 CMD_DATA...

Page 12: ...custom data is programmed into the module using a serial command Transmit Operation Transmit Operation is entered when any of the status line inputs go high During Transmit Operation the MODE_IND lin...

Page 13: ...the MODE_IND line for 10 seconds and neither of the Pairing units will store an address In this case the module should either be reset to clear the address table or the serial interface can be used to...

Page 14: ...n the reset sequence is recognized Extended Pair Completed Solid ON when the pairing operation is completed and waiting for the PAIR line to go low Figure 22 MODE_IND Timing Using the RSSI Line The mo...

Page 15: ...t to part Warning The LVL_ADJ line uses a resistor divider to create a voltage that determines the output power Any additional current sourcing or sinking can change this voltage and result in a diffe...

Page 16: ...eceiver on after it has completed some activity This activity includes completing a transmission and receiving a valid packet After KeepOn seconds have elapsed with no transmit or valid receive activi...

Page 17: ...operate as momentary or latched Add or remove specific paired devices Individually set Permission Masks that prevent certain paired devices from activating certain status line outputs Change the modul...

Page 18: ...ast received packet Read only Interrupt Mask Sets the mask for events to generate a break on CMD_DATA_ OUT Event Flags Event flags that are used with the Interrupt Mask Figure 28 TT Series Transceiver...

Page 19: ...rator is required to perform unintentional radiator testing on the final product per FCC sections 15 107 and 15 109 and IC RSS GEN Information to the user The following information must be included in...

Page 20: ...cally radiated power e i r p is not more than that necessary for successful communication The TRM 900 TT radio transmitter has been approved by the FCC and Industry Canada to operate with the antenna...

Page 21: ...GND GND GND GND GND GND GND GND GND GND GND VCC VCC GND 91k 1 GND S0 S1 S2 S3 VCC GND GND 100k GND VCC 100k 100k 100k GND GND GND GND VCC VCC VCC VCC VCC 100k VCC RX TX GPIO 100k Figure 31 TT Series T...

Page 22: ...election and location within the end product Linx offers cable assemblies with a U FL connector on one end and several types of standard and FCC compliant reverse polarity connectors on the other end...

Page 23: ...Multipath is a term used to refer to the signal cancellation effects that occur when RF waves arrive at the receiver in different phase relationships This effect is a particularly significant factor i...

Page 24: ...tric properties Since such compounds can considerably impact RF performance and the ability to rework or service the product it is the responsibility of the designer to evaluate and qualify the impact...

Page 25: ...aximum Solder Times Absolute Maximum Solder Times Hand Solder Temperature 427 C for 10 seconds for lead free alloys Reflow Oven 255 C max see Figure 40 Reflow Temperature Profile The single most criti...

Page 26: ...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...

Page 27: ...les Linx offers a wide variety of specialized antenna styles Figure 46 Many of these styles utilize helical elements to reduce the overall antenna size while maintaining reasonable performance A helic...

Page 28: ...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...

Page 29: ...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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