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XStream

‐

PKG

‐

R™

 

RS

‐

232/422/485

 

RF

 

Modem

 

User’s

 

Guide

 

 

 

Cyclic Scanning.

 Each RF transmission consists of an RF Initializer and payload. The wake-up 

initializer contains initialization information and all receiving modems must wake during the 
wake-up initializer portion of data transmission in order to be synchronized with the transmitting 
modem and receive the data.  

Figure

 

3.8.

 

Correct

 

Configuration

 

(LH

 

>

 

SM)

 

Length

 

of

 

the

 

wake

‐

up

 

initializer

 

exceeds

 

the

 

time

 

interval

 

of

 

Cyclic

 

Sleep.

 

The

 

receiver

 

is

 

guaranteed

 

to

 

detect

 

the

 

wake

‐

up

 

initializer

 

and

 

receive

 

the

 

accompanying

 

payload

 

data.

 

 

 

 

 

 

 

 

 

 

Figure

 

3.9.

 

Incorrect

 

Configuration

 

(LH

 

<

 

SM)

 

Length

 

of

 

wake

‐

up

 

initializer

 

is

 

shorter

 

than

 

the

 

time

 

interval

 

of

 

Cyclic

 

Sleep.

 

This

 

configuration

 

is

 

vulnerable

 

to

 

the

 

receiver

 

waking

 

and

 

missing

 

the

 

wake

‐

up

 

initializer

 

(and

 

therefore

 

also

 

the

 

accompanying

 

payload

 

data).

 

 

 

 

 

 

 

 

 

 

           

18

 

Содержание XStream-PKG-R RS-232

Страница 1: ...XStream PKG R RS 232 422 485 RF Modem User s Guide 90000819_A...

Страница 2: ...ir respective owners Information in this document is subject to change without notice and does not represent a commitment on the part of Digi International Digi provides this document as is without wa...

Страница 3: ...des of Operation 14 3 2 1 Idle Mode 14 3 2 2 Transmit Mode 14 3 2 3 Receive Mode 16 3 2 4 Sleep Modes 16 3 2 5 Command Mode 19 4 RF Modem Configuration 21 4 1 Automatic DIP Switch Configurations 21 4...

Страница 4: ...er Sensitivity 110 dBm 900 MHz 105 dBm 2 4 GHz Advanced Networking Security True peer to peer no master required point to point point to multipoint multidrop Retries and Acknowledgements 7 hopping cha...

Страница 5: ...cy 902 928 MHz 2 4000 2 4835 GHz Spread Spectrum Frequency Hopping Wide band FM modulator Frequency Hopping Wide band FM modulator Network Topology Peer to Peer Point to Multipoint Point to Point Mult...

Страница 6: ...tically configures the XStream RF Modem to operate in different modes Each time the modem is powered on intelligence inside the XIB R interface board inside the modem programs the modem according to t...

Страница 7: ...1 DCD DO3 Data Carrier Detect Connected to DSR pin6 2 RXD DO Received Data Serial data exiting the RF Modem to host 3 TXD DI Transmitted Data Serial data entering into the RF modem from host 4 DTR DI...

Страница 8: ...DTE male connector device wired to an XStream RF Modem female connector Wiring Diagram DCE RF Modem to an RS 232 DCE Device Figure 2 4 XStream RF Modem female connector wired to an RS 232 DTE male con...

Страница 9: ...16 for RJ 45 connector pin designations used in RS 485 422 environments Table 2 2 RS 485 2 wire half duplex Signals and their implementations on the XStream RF Modem DB 9 Pin RS 485 Name Description...

Страница 10: ...d their implementations with the XStream PKG R RF Modem DB 9 Pin RS 485 422 Name Description Implementation 2 T TA Transmit Negative Data Line Serial data sent from the XStream RF Modem 3 R RA Receive...

Страница 11: ...Select wires so that T and T are connected to each wire in a twisted pair Likewise select wires so that R and R are connected to a twisted pair For example tie the green and white green wires to T an...

Страница 12: ...nter the modem into AT Command Mode is most commonly due to baud rate mismatch Refer to the table below to ensure host serial port settings match those of the modem Table 3 1 Parameter values critical...

Страница 13: ...on a network any serial data that arrives on the DI pin is placed in the DI Buffer The data in the DI buffer will be transmitted over the air when the modem no longer detects RF data in the network H...

Страница 14: ...Mode and initiate an RF connection with other modems Figure 3 4 Transmission of Data Once in Transmit Mode the modem initializes a communications channel Channel initialization is the process o sendi...

Страница 15: ...ple a wake up initializer is a type of RF initializer used to wake remote modems from Sleep Mode Refer to the FH LH HT and SM Commands for more information The length of the wake up initializer should...

Страница 16: ...EP pin is asserted only for Pin Sleep option In Sleep Mode the modem will not transmit or receive data until the modem first transitions to Idle Mode All Sleep Modes are enabled and disabled using SM...

Страница 17: ...smission or reception on the RF channel The user defined period is determined by ST Time before Sleep Command While the modem is in Cyclic Sleep Mode DO2 is de asserted high to indicate that data shou...

Страница 18: ...transmitting modem and receive the data Figure 3 8 Correct Configuration LH SM Length of the wake up initializer exceeds the time interval of Cyclic Sleep The receiver is guaranteed to detect the wake...

Страница 19: ...lt AT Command Mode Sequence for transition to Command Mode No characters sent for one second refer to the BT Guard Time Before Command Input three plus characters within one second refer to the CC Com...

Страница 20: ...in the order it is received If the radio is continuously receiving data the radio will wait for a break in the received data before executing the command The signal will frame the response coming from...

Страница 21: ...Switch Condition Behavior Restore Default Parameter Values of the RF Modem If SW1 SW2 are ON up AT Commands sent ATRE Restore Defaults Command ATWR Write Command Serial Interfacing Options If SW1 is...

Страница 22: ...e PC Settings tab provides a software user interface that facilitates the modification of PC serial port settings PC Setup 1 Set the DIP Switch to RS 232 mode Switch 1 is ON up and the remaining 5 swi...

Страница 23: ...store the modem parameters to their factory default states 1 Open the X CTU program Start Programs Digi MaxStream X CTU 2 Under the PC Settings tab select the PC Serial Com Port from the dropdown list...

Страница 24: ...re Wake up Initializer 0 0xFFFF x 100 msec Sleep Low Power 2 0xFFFF ID v 4 2B 0x27 39d Modem VID User settable 0x10 0x7FFF Read only 0x8000 0xFFFF Networking 2 LH 0x0C 12d Wake up Initializer Timer 0...

Страница 25: ...ud rates non standard baud rates are also supported Note If the serial data rate is set to exceed the fixed RF data rate of the XStream modem flow control may need to be implemented as described in th...

Страница 26: ...lt AT Command Mode sequence CD DO3 Configuration Command AT Command ATCD Binary Command 0x28 40 decimal Parameter Range 0 2 Parameter Value Configuration 0 RX LED 1 Default high 2 Default low 3 reserv...

Страница 27: ...eter Value 0 Number of bytes returned 2 Related Commands HP Hopping Channel ID Modem VID MK Address Mask E0 Echo Off Command Command Mode Options E0 Command turns off character echo in AT Command Mode...

Страница 28: ...f bytes returned 2 Minimum Firmware Version Required 4 27B GD Receive Good Count Command Diagnostics Set Read the count of good received RF packets Parameter value is reset to 0 after every reset and...

Страница 29: ...ed by ST on the receiving modem guarantees that all receivers will detect the next transmission ID Modem VID Command AT Command ATID Binary Command 0x27 39 decimal Networking Set Read the Vendor Ident...

Страница 30: ...m Number of bytes returned 2 Related Commands DT Destination Address HP Hopping Channel ID Modem VID MY Source Address NB Parity Command AT Command ATNB Binary Command 0x23 35 decimal Parameter Range...

Страница 31: ...d ATRE Binary Command 0x0E 14 decimal RN Delay Slots Command Networking RN Command is only applicable if retries have been enabled RR Retries Command or if forced delays will be inserted into a transm...

Страница 32: ...ll be read to determine whether the modem is going into AT Command Mode After this if RP parameter is a non zero value the Config pin will be configured as an output and set low until the first RF pac...

Страница 33: ...ion 0 1 stop bits 1 2 stop bits Default Parameter Value 0 Number of bytes returned 1 Minimum Firmware Version Required 4 2B SB Command is used to set read the number of stop bits in the data packets S...

Страница 34: ...Low Power ST Command sets the period of time in tenths of seconds in which the modem remains inactive before entering into Sleep Mode For example if the ST Parameter is set to 0x64 100 decimal the mod...

Страница 35: ...ated Commands RR Retries Minimum Firmware Version Required 4 22 The TR Parameter is not non volatile and will therefore be reset to zero each time the modem is reset TT Streaming Limit Command Network...

Страница 36: ...107 and 15 109 before declaring compliance of their final product to Part 15 of the FCC Rules IMPORTANT The XStream RF Modems have been certified for remote and base radio applications If the XStream...

Страница 37: ...Antennas not listed in the tables must be tested to comply with FCC Section 15 203 unique antenna connectors and Section 15 247 emissions RF Exposure WARNING This equipment is approved only for mobil...

Страница 38: ...cturer Part Number Type Gain Application Min Separation Distance Yagi 6 dBi Fixed 2 m Yagi 8 8 dBi Fixed 2 m Yagi 9 dBi Fixed 2 m Yagi 10 dBi Fixed 2 m Yagi 11 dBi Fixed 2 m Yagi 12 dBi Fixed 2 m Yagi...

Страница 39: ...pt where this is not possible on account of the nature of the apparatus The CE marking must be affixed visibly legibly and indelibly Furthermore since the usage of the 2400 2483 5 MHz band is not harm...

Страница 40: ...ber Type Gain Application Minimum Separation Distance Digi A24 HABMM P6I Dipole 2 1 dBi Fixed Mobile 20cm Digi A24 HBMM P6I Dipole 2 1 dBi Fixed Mobile 20cm Digi A24 HABSM Dipole 2 1 dBi Fixed Mobile...

Страница 41: ...X09 or X19 Antenna 1 RPSMA 6 Half Wave dipole articulating A09 HASM 675 Serial Loopback Adapter 1 Connects to the female RS 232 DB 9 serial connector of the Interface Board and can be used to configu...

Страница 42: ...and pinouts NULL Modem Adapter male to male Part Number JD2D2 CDN A Black DB 9 M M The male to male NULL modem adapter is used to connect two DCE devices A DCE device connects with a straight through...

Страница 43: ...SM actually has a male center conductor s nector A Antenna Cables RF cables are typically used to connect a radio installed in a cabinet to an antenna mounted externally As a general rule it is best t...

Страница 44: ...e either reconditioned or new All replaced Product and parts become the property of Digi If Digi determines that the Product is not under warranty it will at the Customers option repair the Product us...

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