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ENC-3300-DTMF

CDWAIT – Carrier Detect wait time in seconds

Purpose:

 

Adjusts the amount of time the ENC-3300 will wait for the channel to clear before attempting to 
transmit. If the Carrier Detect is still busy when the CDWAIT time expires, the attempt is aborted and 
no signal is sent.

Minimum value: 0     Zero disables Carrier Detect. Channel activity will not be checked before transmit.
Maximum value 65535.  When set to 65535, the ENC-3300 will not time out. A power reset or pressing 
the ESC key may be necessary to abort the attempt if the channel does not become available.

Overview:

The carrier detect line input of the ENC-3300 can be connected to the carrier detect output of a two-
way radio to monitor the radio channel and avoid transmitting if the channel is already in use.

The ENC-3300 checks the carrier detect just before it engages relay 8 to keyup the radio. If the 
channel is busy it will wait until the channel is available before continuing with it's transmission. If the 
channel remains busy past the time set by CDWAIT, the ENC-3300 will abort the attempt and the 
signal will not be sent.

Hardware connection:

The Carrier Detect (

/CD

) input on the ENC-3300 is an active low. This means the 

/CD

 wait logic 

engages when the 

/CD

 input is taken low in respect to the ENC's ground.

Most two-way radios supply a logic low output when the channel is busy which usually matches the 
ENC's input quite well. It is important however to remember that the ENC-3300 and your radio must 
share a common power ground for CD to operate. If a common ground can not be attained, or if your 
radio raises it's carrier detect when there is a busy channel, then it may be necessary for the installer 
to add an isolation relay, opto-coupler or other techniques to complete the interface.

See PRIORITY on page 40 for information on overriding carrier detect on a per-button level.

SIDETONE

The side tone from the internal speaker can be enabled or disabled when sending DTMF digits.

SYS,SIDETONE=0;

  //  zero disables side tone

SYS,SIDETONE=1;

  //  one enables dtmf side tone

This setting only affects the side tone as the encoder is generating the DTMF digits. Even with 
“SIDETONE” set to zero, the speaker will still beep for button presses, countdown timers, errors and 
other prompts. 

Genave/NRC,Inc.                                  9000-0000-086 rev 4

Pg.  36

Summary of Contents for ENC-3300-DTMF

Page 1: ...ENC 3300 DTMF User Guide Installation Service Manual Programming Guide Universal DTMF Radio Encoder Document 9000 0000 086 rev 4 ...

Page 2: ...ENC 3300 DTMF Page Intentionally Blank Genave NRC Inc 9000 0000 086 rev 4 Pg 2 ...

Page 3: ...ivate the system It is also necessary that everyone understand the purpose of the warning system and the protective actions they need to take when the system is activated Periodic tests can serve to accomplish the training for the operators in addition to demonstrating the various signals to the public All warning systems must have contingency plans in case equipment problems or operator errors in...

Page 4: ...self and others You should completely disable the equipment before working on or in close proximity to any part of it You must test the system and equipment to ensure it is operating correctly after the installation as well as after any work has been performed System Operation Training is necessary to ensure those responsible can correctly activate the system It is also necessary that everyone und...

Page 5: ...or be liable to you for any consequential incidental or indirect damages including damages for loss of business profits business interruption loss of business information and the like arising out of the use or inability to use the software or hardware even if Genave and or its licensor has been advised of the possibility of such damages Because some jurisdictions do not allow the exclusion or limi...

Page 6: ...mmunications 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 t...

Page 7: ...or command 18 Stopping a transmission in progress 18 ESC Button 19 System Clock Adjusting Time and Date 19 Programming via SD Card 20 Active Upload Monitoring Report File 20 Example Successful Upload Report 20 Example Upload Fail Report 21 Active Upload Monitoring LCD 21 GP3 Programming File 22 Filename Length 23 Comments 23 Activity Log 25 Filename 25 Example log file 25 Formatting the Memory Car...

Page 8: ...ges relay 7 32 R7 1 Engages relay 7 32 Alert Tones 33 SYS System 34 FILENAME 34 UNITID 34 BKLIGHT 34 WELCOME1 34 WELCOME2 35 LOG 35 DEBOUNCE 35 PGMUPLOAD 35 PGMLOCK 36 DFRONT 36 DBACK 36 DMARK 36 DSPACE 36 CDWAIT Carrier Detect wait time in seconds 37 SIDETONE 37 BUTTONx 38 ENABLED 39 QUIET 39 LCDNAME 39 DTMF 39 ENDTEXT 40 LOGOUT 40 OUTPUT 40 Enable 41 Disable 41 PRIORITY 41 INITIAL 41 Sample File...

Page 9: ...mm x 5 5mm Barrel Center pin positive DTMF Signal Max Vpp 5 20 Vp p Max Vrms 3 78 Vrms Audio Output 600 ohm Transformer isolated Weight 3 2 lbs 1 45 kg Dimensions Height 11 5 inches 29 3 cm Width 7 0 inches 17 8 cm Depth 7 0 inches 17 8 cm Environmental Operating Temperature 0 deg C to 60 c Humidity 0 95 Non condensing Relay Outputs Form C Sealed 5 amp max Genave NRC Inc 9000 0000 086 rev 4 Pg 9 ...

Page 10: ...ENC 3300 DTMF Page Intentionally Blank Genave NRC Inc 9000 0000 086 rev 4 Pg 10 ...

Page 11: ...oving two screws from the bottom of the door then pulling the lower edge of the door forward and out and setting the access door aside Output Connector Connect the appropriate wires between your radio to the encoder See the Output Schematic on page 44 or Radio Interface on page 25 for additional information The ENC 3300 includes a 9 position depluggable connector for connections to the external ra...

Page 12: ...are for instructional purposes and do not appear on the connector Genave NRC Inc 9000 0000 086 rev 4 Pg 12 J3 Pin Purpose 1 Audio Output 1 2 Audio Output 2 3 Carrier Detect Input 4 Relay 7 Common 5 Relay 7 Normally Open 6 Relay 8 Common 7 Relay 8 Normally Closed 8 Relay 8 Normally Open 9 Signal Common Ground J3 Pin Wire Color Purpose 1 White Audio output to transmitter 2 Yellow Audio output to tra...

Page 13: ...in with your radio set to transmit flat audio response and to disable AGC and other settings which may affect the inbound audio from the ENC 3300 Adjust Audio Levels After connecting your radio use a communications service meter and adjust the output deviation on your radio to the correct level 1 Press and release SW10 10 sec Test to transmit a test tone 2 Adjust POT1 TX Audio Level to the correct...

Page 14: ... monitors the new data as it arrives and searches for possible errors or corrupted data It saves the results of the search in a report file on the SD card The report file has the same name as the file just uploaded but with a suffix of RPT Report instead of GP3 To verify the transfer it s recommended this report be examined with a text editor such as Windows Notepad after an upload See Programming...

Page 15: ...e only Your radio may vary in firmware hardware or programming Consult your radio s service manual for specific details on setup and operation Genave NRC Inc 9000 0000 086 rev 4 Pg 15 Wiring to J3 connector Motorola accessory connector attached to radio Accessory connector bottom view ...

Page 16: ...ur radio may vary in firmware hardware or programming Consult your radio s service manual for specific details on setup and operation Genave NRC Inc 9000 0000 086 rev 4 Pg 16 Wiring to J3 connector Accessory connector bottom view Motorola accessory connector attached to radio ...

Page 17: ... example only Your radio may vary in firmware hardware or programming Consult your radio s service manual for specific details on setup and operation Genave NRC Inc 9000 0000 086 rev 4 Pg 17 Wiring to J3 connector Motorola accessory connector attached to radio ...

Page 18: ...n timer will appear and the internal speaker will beep every second The signal will not be sent unless the button is pressed again before the timer expires The Tx indicator will turn on when the encoder begins generating the DTMF code string The LCD screen will indicate the progress and completion of the action After completion of the transmission both the Busy and Tx indicators will turn off and ...

Page 19: ... the SYS PGMLOCK command See PGMLOCK on page 35 No countdown or option to download the program information will occur if PGMLOCK is enabled System Clock Adjusting Time and Date Press and hold the ESC button for at least four seconds When you initially press the ESC button the lcd screen will display Release ESC button After four seconds a countdown timer will begin and the lcd screen will display ...

Page 20: ... the SD card can be removed after the program upload is completed Active Upload Monitoring Report File During a program upload the encoder actively monitors the new data as it arrives and searches for possible errors or corrupted data It saves the results of the search to a report file on the SD card The report file has the same name as the file just uploaded but with a suffix of RPT Report instea...

Page 21: ...ach line entry is displayed in real time on the LCD screen with the result of the line scan indicating FAIL if an error is detected If an error is detected the encoder Reports FAIL on the LCD screen Displays the program line number on the SD card where the error can be found Activates the internal alert tone to get the operators attention Delays the upload for several seconds so the operator can n...

Page 22: ...on Windows 2000 XP and Windows 7 operating systems ENC3300 is a fill in the blank type of program that is easy to operate In addition to quickly constructing files for the encoder it can also read and display information downloaded from an already programmed encoder ENC3300 exe program for W7 XP and W2K Genave NRC Inc 9000 0000 086 rev 4 Pg 22 ...

Page 23: ...e the encoder starts See PGMUPLOAD on page 34 for additional information An example filename FILEA01 GP3 Filename Length File names are DOS 8 3 style The filename prefix before the period cannot be greater than eight characters and the suffix after the period cannot be greater than three characters Example CUST ONE GP3 This name is fine CITYWV GP3 This name is fine CUST TOO LONG OF A NAME GP3 This...

Page 24: ...wn timer started 15 31 51 11 21 13 202 Btn 02 Steady Tap 2 presses complete Countdown stopped Proceeding to action 15 31 59 11 21 13 210 Btn 02 Steady Action completed 17 42 10 11 21 13 200 Btn 07 Wail Single press button Proceeding to action 17 32 12 11 21 13 210 Btn 07 Wail Action completed 21 14 51 11 21 13 903 Sys ESC button pressed 03 02 44 11 22 13 201 Btn 03 Fire Tap 2 button pressed first ...

Page 25: ...d uses a CENTER PIN POSITIVE configuration A 2 amp 5mm x 20mm glass fuse is used for electrical protection and safety Radio Interface Input Output Connector Connector J3 is used for connections to radios and other external devices A larger version of the Output Schematic is available on page 44 Genave NRC Inc 9000 0000 086 rev 4 Pg 25 ...

Page 26: ... steering or other external devices It does not automatically engage during a transmit event but is instead controlled by commands in the DTMF code string Commands R7 0 and R7 1 in the DTMF code string turn the relay off and on respectively Relay 7 has two of its form C outputs available on output connector J3 Normally Open and Common pins are available Audio The ENC 3300 uses an internal 600 ohm ...

Page 27: ...tput and float up to 12 volts dc The ENC 3300 waits one second extra after the CD line goes high before beginning any pending transmissions The J3 connection labeled GND is normally connected to your radio s signal ground so the encoder and the radio have a common ground level to compare Many times GND can simply be connected to the radio s power supply ground See CDWAIT Carrier Detect wait time i...

Page 28: ...switch connections can operate while the membrane keyboard of the ENC 3300 is still connected however only one switch external or keyboard can be used at a time Lead length between the encoder and the external switches must be kept to a minimum distance of 10 feet Isolating devices such as relays or opto isolators can be added by the user for additional isolation over longer distances Genave NRC I...

Page 29: ... VDTMF 12345 has been shorted to VDTMF 12345 All sixteen DTMF characters are available They are 1 2 3 4 5 6 7 8 9 0 A B C D Dtmf code examples Standard codes Example Send the code 12345 VDTMF 12345 Example Send the code 24680BDF VDTMF 24680BDF Pauses Each capital letter P pauses the transmission for one second Each lower case letter p pauses the transmission for 5 seconds Example Send the code 123...

Page 30: ... VDTMF 1442 S ACTIVATE ALL CMD HAS BEEN SENT PP324 S ALL DONE PPP In the above example The DTMF code 1442 will be sent LCD screen will display ACTIVATE ALL CMD HAS BEEN SENT There will be a two second pause DTMF code 324 will be sent LCD screen will display ALL DONE There will be a final three second pause then PTT relay 8 will disengage Note Text to be displayed can contain a maximum 32 character...

Page 31: ... string R7 0 Disengages relay 7 R7 1 Engages relay 7 Note Is not available on the ENC 3300 TRBO version Only DTMF versions of the ENC 3300 The optional relay is not engaged when a button begins sending a DTMF code string Instead it is left up to the user to determine if and when the relay should be engaged Using the R7 0 and R7 1 in the DTMF code string you can selectively turn the relay off and o...

Page 32: ...ow 10 times 3 to 8 sweep tones with different frequencies and cadence 99 ten second test tone consisting of DTMF character A Example Send DTMF code 3579 then transmit high low alert signal VDTMF 3579 AL 2 Example Same as above but pause two seconds after the DTMF code to give the receivers time to decode and activate the signal before generating the Alert tones It finishes by prompting the operato...

Page 33: ...s not need to be unique BKLIGHT Time in seconds for the LCD back light to remain on after last button press or action Values are 0 to 65535 SYS BKLIGHT 60 remains on for 60 seconds SYS BKLIGHT 65535 65535 is special value back light does not turn off WELCOME1 Text to show on top line of LCD when the unit is in idle state Sixteen characters maximum Changes must be enclosed in double quotes SYS WELC...

Page 34: ...E 250 default SYS DEBOUNCE 1000 Set debounce time to one second PGMUPLOAD Allows or denies a program upload to occur from the SD card to the encoder memory PGMUPLOAD is not a stored value in the encoder memory Instead its a command placed in the program located on the SD memory card On power up reset the encoder checks the SD card for a file with the GP3 suffix If found it opens the file and check...

Page 35: ... initial wait time before DTMF codes begin Allows the transmitter to reach full power SYS DFRONT 800 sets front porch time to 800 msec factory default time is 800 msec DBACK DBACK is the final wait time after all the DTMF codes have completed The transmitter will remain keyed during this period then automatically unkey SYS DBACK 800 sets back porch time to 800 msec factory default time is 800 msec...

Page 36: ...0 will abort the attempt and the signal will not be sent Hardware connection The Carrier Detect CD input on the ENC 3300 is an active low This means the CD wait logic engages when the CD input is taken low in respect to the ENC s ground Most two way radios supply a logic low output when the channel is busy which usually matches the ENC s input quite well It is important however to remember that th...

Page 37: ...TTON 1 sent Verify action BUTTON1 LOGOUT 0 BUTTON1 PRIORITY 0 BUTTON1 QUIET 0 BUTTON1 OUTPUT 0 BUTTON2 NAME BUTTON 2 BUTTON2 ENABLED 2 BUTTON2 VDTMF 222991 BUTTON2 LCDNAME BUTTON 2 BUTTON2 ENDTEXT BUTTON 2 sent Verify action BUTTON2 LOGOUT 0 BUTTON2 PRIORITY 0 BUTTON2 QUIET 0 BUTTON2 OUTPUT 0 BUTTON6 NAME BUTTON 6 BUTTON6 ENABLED 2 BUTTON6 VDTMF 666991PP5112 BUTTON6 LCDNAME BUTTON 6 BUTTON6 ENDTEX...

Page 38: ... notify the user they have pressed a disabled button If an individual button is disabled the QUIET option allows you to either advise the user of the disabled button status or to quietly discard the keypress without notification LCDNAME Text shown on the LCD screen for the particular button Maximum 16 alpha numeric characters Changes must be enclosed in double quotes BUTTON1 LCDNAME BUTTON 1 DTMF ...

Page 39: ...utton The two relays number 7 AUX and number 8 PTT are normally used to operate an optional device or microphone pathway and to key the external radio s transmitter In addition to automatic operation they relays can also be controlled from within the DTMF code The OUTPUT command allows a third way to control the relays Either of the relays can be programmed to mimic the action of a button The rela...

Page 40: ...ch is controlled by the command PRIORITY Priority Action 0 Low Default Aborts attempt if channel not still clear when CDWAIT expires 1 High Ignores carrier detect Transmits regardless of carrier status 2 Medium Delayed override Waits for the channel to clear If the channel is still busy when CDWAIT expires the unit then overrides carrier detect and generates DTMF string anyway Note Some radios hav...

Page 41: ...NCE 251 SYS BKLIGHT 65535 SYS FILELOAD 2 SYS LOG 0 SYS SIDETONE 1 SYS PGMLOCK 0 BUTTON1 NAME BUTTON 1 BUTTON1 ENABLED 2 BUTTON1 VDTMF 111991 BUTTON1 LCDNAME BUTTON 1 BUTTON1 ENDTEXT BUTTON 1 sent Verify action BUTTON1 LOGOUT 0 BUTTON1 PRIORITY 0 BUTTON1 QUIET 0 BUTTON1 OUTPUT 0 BUTTON2 NAME BUTTON 2 BUTTON2 ENABLED 2 BUTTON2 VDTMF 222991 BUTTON2 LCDNAME BUTTON 2 BUTTON2 ENDTEXT BUTTON 2 sent Verif...

Page 42: ... BUTTON5 ENDTEXT BUTTON 5 sent Verify action BUTTON5 LOGOUT 0 BUTTON5 PRIORITY 0 BUTTON5 QUIET 0 BUTTON5 OUTPUT 0 BUTTON6 NAME BUTTON 6 BUTTON6 ENABLED 2 BUTTON6 VDTMF 666991 BUTTON6 LCDNAME BUTTON 6 BUTTON6 ENDTEXT BUTTON 6 sent Verify action BUTTON6 LOGOUT 0 BUTTON6 PRIORITY 0 BUTTON6 QUIET 0 BUTTON6 OUTPUT 0 BUTTON7 NAME BUTTON 7 BUTTON7 ENABLED 2 BUTTON7 VDTMF 777991 BUTTON7 LCDNAME BUTTON 7 B...

Page 43: ...ENC 3300 DTMF BUTTON8 ENDTEXT BUTTON 8 sent Verify action BUTTON8 LOGOUT 0 BUTTON8 PRIORITY 0 BUTTON8 QUIET 0 BUTTON8 OUTPUT 0 Genave NRC Inc 9000 0000 086 rev 4 Pg 43 ...

Page 44: ...ENC 3300 DTMF Output Schematic Genave NRC Inc 9000 0000 086 rev 4 Pg 44 ...

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