Futaba FDK32TU Mobile Station Instruction Manual

**Futaba FDK32TU Mobile Station Instruction Manual

**

This instruction manual contains important notices and how to use this product safely. Please be sure to read this instruction manual before you use this product. Please understand the following symbols that are used in this manual before reading this instruction manual.

The symbols are defined as follows:

WARNING Indicates a hazard that can cause severe personal injury, death, or substantial property damage if the warning is ignored.

CAUTION Indicates a hazard that will or can cause minor personal injury, or property damage if the caution is ignored.

FCC Notice

This equipment has been tested and found to comply with the limit 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 use 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 dose causes 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 measure:

• 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.

The user that changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.

WARNING

The following six are extremely important warnings.

1. Be sure to use this product within its specification; otherwise it may cause failures and malfunctions.
   Especially, pay great attention to temperature range and power source voltage.

2. Do not install this product to the sites where the product is disposed under the direct sunlight and/or under the high temperature. Prior to use this product, please make sure the temperature around the site where you are planning to use this product, because this product is guaranteed at the limited ranges in operating temperature and storage temperature. Operating the product beyond the guaranteed temperature range may cause failure of this product.

3. Do not install this product in a high humidity area. A drop of water on the circuit inside of this product may cause failure of this product.

4. Avoid this product from being watered. If water enters inside this product, it may cause failure of this product

5. The specification of the external interface of this product is different from ordinary one. Please make sure the wire identifications before connecting external equipment.

6. Be sure to confirm that the power switches are off before connecting or disconnecting connectors. Connecting and disconnecting connectors while any power is on may cause failures and malfunctions.

CAUTION

The following three are very important cautions in handling this product.

1. This product is designed specially for industrial applications. If you are planning to use this product in the area where the use of electromagnetic wave is restricted because medical equipment and airplanes are used near its area, Please confirm that this product does not interfere with those before you use this product. Please do not use this product unless you can confirm that this product does not interfere with those medical equipment and airplanes near the site.

2. Please pay attentions to the electromagnetic conditions around this product. This product uses electromagnetic wave as a communication method. Consequently, if there is a strong source of electromagnetic wave near this product, this product may not able to fully achieve its performance.
   Please check the electromagnetic conditions around the site where you are planning to use this product prior to use this product.

3. This instruction manual is protected by the law of copyright protects. Futaba Co. is not responsible to any problem and incident that are caused from reprinting this instruction manual by somebody other than Futaba.

INTRODUCTION

Special Features

1. FDK32TU (mobile station) communicates with the modem FDK01TU (fixed station) through coupler FZE02TJ010 and 200-ohm feeder cable.

2. In this system, multiple mobile stations can be allocated to the single feeder cable. And each mobile station can have individual address that can be set externally. As a result, a single fixed station and multiple mobile stations can establish a communication network.

3. he interface between the external controller and the fixed station or the one between the external controller and the mobile stations is designed to meet RS-422 and RS232C.

4. FDK32TU has 3 operation mode:

5. FSK mode (1 ~ 50ch)
   Communication speed is 100kbps.

6. Low Speed OFDM mode (51 ~ 100ch)
   Communication speed is up to 105kbps.

7. High Speed OFDM mode (101 ~ 120ch)
   Communication speed is up to 1,054kbps.

Names and functions of parts of the mobile station

1. Indicators of signal reception level

2. Indicator of signal transmission

3. Switches to set address

4. Switches to set transfer speed

5. Indicator of power switch
   

6. Power switch

7. Connector to the 24V DC power

8. Connector to the external reset

9. Interface connector to RS-232C/RS422 (specially defined pin assignment)
   

10. R2 : Connector for receiving signal from coupler unit 2

11. R1 : Connector for receiving signal from coupler unit 1

12. T2 : Connector for sending signal to coupler unit 2

13. T1 : Connector for sending signal to coupler unit 1
    
    Names and functions of parts of the coupler unit

14. Connect this terminal to the mobile station’s R1 or R2.

15. Connect this terminal to the mobile station’s T1 or T2.
    

POWER

Before turning on the power

Be sure to read this instruction manual prior to turning on the power of the modems.
Improper operations of the FDK modem may not only cause failures of communication but also cause malfunctions and/or damages of this modem and the external equipment connected to this modem.
In order to establish proper communication between this modem and the fixed station, communication parameters should be set by switches, which should be set before turning on the power switch.
In addition, since Futaba has specially defined the pin-assignment of interface connector for RS-232C/RS-422;
please carefully confirm the wire identifications of the interface cable and pin layout.

Voltage of the power source

The input voltage to this modem should be within the range of 20Vdc and 29Vdc. Otherwise, this modem and
the external equipment connected to this modem may cause damages or malfunctions.

Connector for the power source

The type of the connector used for this modem is S2P-VH made by J.S.T. Mfg Co., Ltd. Supply the voltage anywhere between 24V +/- 10% to the “+” marked terminal and connect the ground wire to the “-“marked terminal.

Power switch

The label “POWER” is printed beside the power switch of this modem. (See Fig. 2-2)
Pushing this switch toward “ON” will turn on the power switch and the LED indicator of the power on top of the unit turns on green. On the other hand pushing the switch toward “OFF” will turn off the power. The picture 2-4 shows “OFF” state.

COUPLER UNIT

Connecting the mobile station and the coupler unit

A mobile station has four 50-ohm impedance SMA connectors.

Two connecters are for transmission and the other two are for reception.
Connections between a mobile station and the two units of couplers are shown in figure 3-1. T1 and R1 of a mobile station should be connected to one unit of two couplers. T2 and R2 of the mobile station should be connected to the other like Fig. 3-1.

CONNECTING COMMUNICATION CABLE

Connector for RS-232C/RS-422

Connector model: Hirose Electric Co., Ltd. RDED-9P-LN (4-40) (50)
Please select one out of RS-232C and RS-422.

PIN No.

| Signal name| Note
---|---|---

1

|

NC

|

RS-232C transfer data

2

| TD
3|

RD

4

|

NC

5

|

GND

|

Signal ground
RS422

6

|

RD+

7

|

RD-

8

| TD+
9|

TD-

RS-232C uses the pins 2, 3 and 5.
RS-422 use the pins 5 through 9.
SW 1 on top of the unit can select either RS-422 and can either connect the termination resisters or disconnect them.

SW2 is the common switch for RS-232C and RS-422 to set parameters of communication speed and so on.

Please refer to the next section for further detail.

SETTING SWITCHES

The functions of the dip switches and a rotary switch are follows:

Table 5-1 SW (DIP-8)

3
4
5
6
7| Transfer speed| Refer to Table 5-2.
8

Table 5-2 Setting of transfer speed

No.

| SW| Transfer speed
---|---|---
Bit7| Bit8
1| ON| ON| 921.6kbps
2| OFF| ON| 115.2kbps
3| OFF| OFF| 19.2kbps

Table 5-3 Address SW (3 sets of 16-step rotary switch)

000h through FFFh are prohibited.

SYSTEM OPERATION

Outline of communication

FDK32TU is the wireless modem unit to communicate with FDK31TU. To send data to FDK31TU through serial port (RS-232C, 422) of FDK32TU, apply command @TXT or @TBN. Refer to the instruction manual about detail of @TXT or @TBN command. Communications on the air through feeder line and coupler are performed with packet data transmission mode.

Preparation of communication on the air

Before making communication on the air with FDK31TU, it is necessary to chose frequency and chose the port of two couplers of transmitter and receiver. The frequency of each FDK32TU and FDK31TU must be same. To select the port of two couplers of transmitter and receiver, use @COP command. @COP command is used in case of branching the 200 ohms feeder line, and so on. FDK32TU has no automatic selection function of the coupler, such as diversity mode.

Data communication with serial port of the wireless modem

Transmission

To send data to FDK31TU through serial port (RS-232C, 422) of FDK32TU, apply command @TXT or @TBN.
If there was respond ACK from FDK31TU on the air, FDK32TU make OK output to its serial port (RS-232C, 422). If there was no ACK from FDK31TU on the air, then FDK32TU make NG output through its serial port (RS-232C, 422).

Receiving

FDK32TU calculate CRC and make address recognition and make data output through its serial port (RS-232C, 422).

Data packet format

Data packet format is described below.

Preamble : 32 times repetition of 1 and 0.
Header : address of recipient, and address of transmitter, number of retransmission, number of packet, and so on.
Data : data to be sent up to 1024 bytes.
CRC : CRC16 calculated with Header to Data.

Communication on 1: n mode

One FDK31TU able to perform 1: n communication with defined number of FDK32TU. To make 1:n communication, define plural address on address part of @TXT or @TBN command. Addresses input through serial port (RS-232C, 422) of FDK31TU will be added to its header.

COMMUNICATION WITH MOBILE STATIONS

Communication procedure (an example)

1. Set parameters of fixed station, and make it effective to communicate with mobile stations.

2. Connect to the power source.

3. Connect the external interface (One of RS-232C and RS422)

4. Connect to the matching/distributing unit.
   (The order between ② and ④ can be changed freely.)

5. Turn on the fixed station and mobile stations.
   (The order to turn on the powers is free.)

6. Wait more than 1 second and then set frequency channel.
   After receiving a response of “OK”, forward to the next step.

7. Send command/data in format of @TXT or @TBN.
   If “OK” is returned, the communication is completed.

If “NG” is returned, possible reasons of the failure are insufficient signal strength and improper settings of communication cable, switches and frequencies.
Send @PNG command and read the value of RSSI. If the value is 57 or lager, please confirm the setting condition again.
If “OK” is returned, it is possible to continue communication by repeating ⑦.

COMMUNICATION COMMAND

Input and output between external control equipment and mobile stations are carried out by packet method.
The data format of the packet method is either in the sequence of “@TXT (address) (user data) [CR] [LF]” or in the sequence of “@TBN (address) (data length) (user data)”
Binary data method is useful to avoid communication errors when a control code matches exactly a part of user data.

Text data @TXT (address) (user data) [CR] [LF]

Address : ASCII code, hexadecimal 3-digits
(For instance, 4 is “34h” in ASCII.)
Data : ASCII code, hexadecimal
The data length : Arbitrary but no more than 1024 bytes.
[CR] : 0Dh in hexadecimal
[LF] : 0Ah in hexadecimal
Example : Sending “ABCDEFG” to a mobile station whose address is 001.
@TXT001ABCDEFG [CR] [LF]

Binary data @TBN (address) (data length) (user data)

Address : ASCII code, hexadecimal 3-digits
Data length : “001” to “400” (0 to 1024 bytes)
The number of bytes should be expressed by hexadecimal 3-digits in ASCII code.
[CR][LF] : not necessary
If data length is longer than predetermined data length, the surplus of the data will slide in front of the next instruction. Therefore “NG [CR] [LF]” may be returned to the data sender.
Example : Sending 7 bytes of binary data to a mobile station whose address is

@TBN001007 (7 bytes of binary data)

Taking into consideration the manual input through terminal software, the text data method can delete a character by recognizing backspace key while the binary data method treats backspace key as data.
In the case that transmission and reception of all the data is completed properly, the sender will output the message “OK [CR] [LF]” after receiving ACK of the last packet.
On the other hand, the receiver will output the same character string that was sent from the sender from the headfirst. In case of @TBN command, the receiver will output the data that is within the range determined by the user data length, otherwise surplus of the data will not be outputted.
In case of communication error, if ACK is not returned from the destination after repeating retransmission up to the preset number, the sender will stop sending data and output “NG [CR] [LF]” immediately after detection of the end of input data.
In case of failure while sending a packet due to communication error, the sender will output the partial data that the sender could properly receive from the external interface of the receiver.

CONTROL COMMAND

Control commands are used for controlling the fixed station.

Table 9-1 Command table

@FRQ : Write or read frequency channel number

1. Input : @FRQpp[CR][LF] ppp : Input a number between 1 and 50 (ASCII code) or input nothing for ppp.
   (Note)
   Inputting a single digit is allowed for 1 through 9.
   Do not input space between “FRQ” and “ppp”.

2. Processing : If there is no input for “ppp”, the current frequency channel number will be outputted.
   Response message
   FRQ = ppp [CR] [LF] (Note)
   pp: 00 to 120 (ASCII code)
   Spaces are necessary in front of and afterwards of “=”.
   If a channel number is inputted in “ppp”, this modem will return “OK” message to the host computer after changing the SRAM register and reassign the frequency number,.

3. Frequency channel at the booting
   At the booting this modem and resetting the software, the frequency channel is

@PNG : Request response & read the reception intensity of the destination

1. Input : @PNG[CR][LF]
2. Processing : Receiving this command, this modem returns as a response message the signal intensity of the last packet that this modem has received.
   Response massage
   RSSI = nn [CR] [LF] nn: Hexadecimal number of signal intensity in [dBm]

@RST : Reset software

1. Input : @RST[CR][LF]
2. Processing : Receiving this command, software will be reset.
   This command restarts the exerciser program from the start address.
   Also the SRAM register will be reset to the condition when this modem was turned on.
   In addition, this command will initialize not only the software but also the hardware of this modem.
   It takes about 300ms.
   After the completion of initialization, a response message of “OK” will be returned to the host computer.

@COP : Setting of the coupler or readout (valid only for mobile stations)

1. Input : @COPp[CR][LF] “p” should be 1 or 2 in ASCII code, or enter nothing.
   Do not input space between “COP” and “p”.

2. Processing : in case of no value for “p”;
   The current status of the coupler is read out.
   The message will be;
   COP = p [CR] [LF] p= 1 or 2 in ASCII code
   A space code (0x20) will be added to either side of the “=”.
   : In case that some value is inputted for “p”:
   Coupler units will be switched.

3. Default setting
   COP = 1

4. Timing of command execution
   Receiving a command from external I/F, the mobile terminal will carry out the command and return its end message immediately after the disconnection of the coupler is completed. This command will be carried out regardless of the communication status on the feeder.

ADDRESS

The effective addresses for mobile stations are from 400 through FFF.
Use rotary switch for setting.
Set the address at “001” when sending data to the fixed station from mobile stations.

INDICATORS

When green LED is on, packets have been sent to feeder cables.

RX LEVEL| Combinations of eight LEDs indicate the levels of the signal intensity.

1  LEDs ON         : < -80dBm

2  LEDs ON         : < -70dBm

3  LEDs ON         : > =-70dBm

EXTERNAL RESET

The following connector is equipped with this modem so that the hardware of this modem can be reset externally.

Connector type : J.S.T. Mfg Co., Ltd S3B-XH-SM3-TB

In order to reset this modem externally, short #2 and #3 pins of the RESET connector in the picture 11-1 more than 10ms: then disconnect them.

PRODUCT SPECIFICATION

Communication characteristics of feeder cable

【FSK mode】
Down link frequency band (receiver)| 230    MHz    ～ 235    MHz
Up link frequency band (transmitter)| 151    MHz    ～ 156    MHz
Frequency band per channel| 100    kHz
Interval between frequency channels| 100    kHz
Number of frequency channels| 50
Communication speed| 100    kbps
【Low Speed OFDM mode】|
Down link frequency band (receiver)| 230    MHz    ～ 235    MHz
Up link frequency band (transmitter)| 151    MHz    ～ 156    MHz
Frequency band per channel| 100    kHz
Interval between frequency channels| 100    kHz
Number of frequency channels| 50
Communication speed| Up to 105   kbps
【High Speed OFDM mode】|
frequency band (transmitter / receiver)| 302    MHz    ～ 321    MHz
Frequency band per channel| 0.87 MHz
Interval between frequency channels| 1MHz
Number of frequency channels| 20
Communication speed| 1,054    kbps
【Common to All mode】|
Emission power| FCC part15    Class B

≦ 46dBμV/m at 3m

Reception signal intensity| -87dBm (at 100kbs, PER ≦ 10-1 )
Addresses for mobile modems (own address)| 400h～FFFh(3072 addresses）
Communication mode| Full-Duplex Packet mode

External I/F specification}

pin

assignments are used for this product.)

Communication speed| 19.2kbps, 115.2kbps, 921.6kbps
Communication method| RS-232C,RS-422       Full-Duplex Packet mode

mobile station’s general specification

bonded steel Color
: DIC 546 1/2 (Dainippon Ink)
Operating temperature range| -10C to +50C
Storage temperature range| -20C to +70C
Operating humidity rage| 35%RH to 95%RH (under no condensation)
Storage humidity range| 35%RH to 95%RH (under no condensation)
Anti-vibration| The product should survive the following vibration test;
Vibration amplitude   : 3.5mm Frequency       : 10Hz
2 hours for back and forth
2 hours for left and right
4 hours for up and down
Anti-shock| The product should survive the following shock
test;Acceleration     :    500 m/s2 3 times along with 3 axis, total 9 times500 m/s2
Anti-electro static| Apply following high voltage Input/output
: ±2kV (contact discharge)There should be no malfunction after test.
: ±4kV (contact discharge)

There should be no damage after test. The test follows IEC61000-4-2

FREQUENCY CHANNEL

FSK mode

Low Speed OFDM mode

High Speed OFDM mode

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