Operating Instructions MODEL ST-809 Selective Call and Remote Control Decoder Manual Number: 600-0101 GENERAL The ST-809 is a sub-miniature DTMF Address Decoder designed for Selective Calling and Remote Control applications via radio or wire line. Due to the small size the ST-809 is especially applicable for installation in hand-held and mobile radios. The ST-809 uses surface mount and uP technologies to produce a small sized product aimed at the limited available space in modern two-way radios. The ST809 will respond to an address of 1 to 7 digits in length using any of the 16 DTMF characters. There are no restrictions on the use of repeated digits in the address. This provides greater than 250,000,000 unique addresses. Digit position and address length recognition virtually eliminate the possibility of response to incorrect addresses. Group/All call, Radio Kill, Call Alert Tone, Transpond Acknowledgement and Remote Reset are additional features. Application information is available or can be developed for most radio models. Many of our application notes are available for instant access on our web site http://www.selectone.com. If you would like application details for a specific radio, please call us TOLL FREE at (800)227-0376 or request assistance via fax at (510)781-5454 or E-Mail at firstname.lastname@example.org. Revision: A OPERATING SPECIFICATIONS Parameter 1 OPERATION The ST-809 is generally set up to monitor DTMF signalling on a radio or wire line circuit. For radio applications, ST-809 outputs are used to mute receiver audio, blocking out unwanted channel traffic. When the correct PRIMARY, SECONDARY, or ALL CALL DTMF address is received, the decoder latches its DECODE LATCHED OUTPUT to unmute the host radio. On decode the DECODE MOMENTARY, CALL LAMP and ALERT TONE outputs can be used to activate a multitude of audible or visual alerting devices. Decode of the PRIMARY ADDRESS CODE activates the PTT and TRANSPOND TONE outputs permitting contact acknowledgement to the calling radio operator. When the radio operator responds to the call, all outputs are reset on the “ON-HOOK” to “OFF-HOOK” transition. Use of PRIMARY, SECONDARY, or ALL RESET permits remote reset of all functions. The ST-809 provides a special RADIO KILL function. When RADIO KILL is decoded the ST-809 will open the PTT circuit and mute the receiver. The condition of this function is stored in EEPROM making it immune to reset by radio power down. Radios that have been “KILLED” may be restored to operation when the ST-809 receives a RESTORE address. Min Power supply voltage Power supply current Open collector output (sink current) Call Lamp output current (sink or source) Temperature range DTMF input (HI range) DTMF input (LO range) Signal to noise ratio DTMF twist Digit recognition time Interdigit time Decode time Decode Momentary time Transpond/Alert tone level Transpond duration Transpond Tone Freq. Alert Tone Freq. Call Lamp Flash (50% duty Cycle) Interconnect type Size Typ 5.5 −30 30 10 12 Max V DC mA DC mA DC 200 mA DC +60 850 280 °C mV RMS mV RMS dB SINAD dB mS mS Interdigit time1 Sec. V p-p, no load Sec Hz Hz mS ±10 20 50 0 0.050 100 2300 1 590 5 2.34 874 528 500 Unit 25 7 80 900 13 pin miniature low profile connector. 1.5"L x 0.85"W x 0.25"H (38.1mm x 21.6mm x 6mm) Measured from the end of the last DTMF character in the sequence. Specifications are Subject to change without notice. INSTALLATION MOUNTING: Use of a double-sided adhesive pad or an insulating piece of Mylar eliminates hardware requirements. When using the adhesive pad, mount the ST-809 on a clean, dry surface, oriented to allow easy routing of the wiring to the radio. Press firmly after mounting to ensure good adhesive contact. Do not touch the adhesive or attempt to re-position the unit after mounting. WIRE INTERFACE: Connector pin numbers are shown in brackets [#]. Wire colors represent the assignment on the mating connector  Negative (− − ) Supply (BLK): Connect to system (−) Supply (GND).  Positive (+) Supply (RED): Connect to system (+) Supply (5.5 to 25Vdc). Selectone Inc. — 3501 Breakwater Ave., Hayward, Ca. 94545 — (510) 781-0376 — Fax: (510) 781-5454 Toll Free: (800) 227-0376 — E-Mail: email@example.com — Web Site: www.selectone.com  DTMF Signal Input (GRN): Connect to signalling audio source, e.g., discriminator output, volume high, etc. This input will accept levels between 10 and 850 mVrms in two ranges. Factory default input range is 10 mVrms to 280 mVrms. If the input level is > 280 mVrms and less than 850 mVrms, the HI input level range may be selected in custom configuration. Connection to the speaker output is not recommended due to the extremely wide dynamic range across a speaker. NOTE: This point must not mute while awaiting signalling tones.  Call Lamp #1 (VIOLET): Open collector output, to provide a flashing or steady “ON” CALL LAMP. This output remains active until an ON-HOOK to OFF-HOOK transition or receipt of a remote reset command. NOTE: CALL LAMP #2 must be tied to NEGATIVE (-) SUPPLY when using CALL LAMP #1 as an output.  Call Lamp #2 (BLUE): Open emitter output, to provide a flashing or steady “ON” CALL LAMP. This output remains active until an ON-HOOK to OFF-HOOK transition or receipt of a remote reset command. NOTE: CALL LAMP #1 must be tied to POSITIVE (+) SUPPLY when using CALL LAMP #2 as an output. Did You Know…? Most Call Lamps are LED’s which require a series current limiting resistor.  Transpond Tone (WHT/GRN): 874 Hz tone active only while PTT OUTPUT is active for transpond.  Decode Latched (WHT/ORG): Connect to the muting point in the radio. This output goes to the UNMUTE condition upon decode, if the MONITOR/RESET Line is “ON-HOOK”. It may be reset to the MUTE condition by a “OFF-HOOK” then back “ON-HOOK” transition of the MONITOR/RESET line. If the MONITOR/RESET line is “ON-HOOK” this output may be reset remotely with the PRIMARY or SECONDARY RESET address code. This output can be customized with the sink/source and the state programming parameter. See the programming section for customising details.  Unused. FUNCTIONAL DESCRIPTION The microprocessor circuit of the ST-809 utilises an advanced decoding algorithm which allows all possible combinations of the sixteen standard DTMF tone pairs in codes of one to seven digits in length. The decoder ignores codes of incorrect length, even though they may contain the correct code within them. It is allowable, for example, to install decoders programmed with codes “1’, “12,” “123,” “1234” and “12345” in the same system without improper activation of any of the units. ST-809 factory default application parameters accommodate most applications. For unique configurations, the ST-809 permits the installer to customise most outputs and timing to accommodate the specifics of the application.  PTT Input (YELLOW): Used with the RADIO KILL feature. The PTT path between the mic and radio is broken and the ST-809 placed in series. This lead goes to the mic side of PTT. Additionally this line acts as a “set” function to force the radio to un-mute if PTT is activated on a muted radio (eliminates multiple blind transmissions) CUSTOM CONFIGURATION  PTT Output (BLK/YEL): Open collector output, saturates to (-) Supply (GND) following the PTT input unless RADIO KILL is activated. Additionally this input is used to key the transmitter after each Primary or Remote Control sequence to permit transpond. This lead goes to the radio side of PTT. To enter the configuration mode, press and release the monitor switch (or manipulate the hook switch at least five times in the first five seconds following power turn-on. The ST-809 verifies entry to the configuration mode by generating an alert tone and toggling the call lamp outputs for about 6 seconds. The call lamp will remain ON while in the configuration mode. Once in the configuration mode, configuration can be accomplished via a DTMF encoder connected to the Rx signal input [(-) Supply as common], or Over the Air via a Service Monitor or DTMF equipped transmitter.  Decode Momentary (ORG/BLK): Open collector output saturates to (-) Supply (GND) for the programmed momentary time following each Primary or Secondary sequence.  Monitor/Reset (BROWN): Connect to the microphone hook switch, hang-up button or box. This lead places the DECODE LATCH output in UNMUTE condition when offhook and resets all other outputs on the transition from “ONHOOK” to “OFF-HOOK”. Refer to custom programming to customise the MONITOR/RESET line for your application.  Alert Tone (WHT/BLU): 528Hz tone pulsed 250mS “ON” then 250mS “OFF” for local user alerting applications. This tone remains active until reset. Before use, all ST-809’s must be configured to accommodate the specifics of the application where it is being used, and to its own address codes. Most applications only require customisation of the address codes. ⇒ To exit the configuration mode remove power from the ST-809. ⇒ If an error occurs while keying in a configuration sequence, Press * to Clear the Current Entry. Once cleared, additional entries may proceed as required. ⇒ To return the unit Factory DEFAULT (known starting point) Press 99. Additional entries may proceed as required. Custom Configuration can be grouped into 4 sets of related sequences. #1 = Six (6) decoder address sequences. #3 = Seven (7) application specific parameters. #2 = Three (3) timing parameters. #4 = Four (4) operational modes. In most applications ONLY the primary and secondary address codes need to be programmed. The other programmable parameters can usually be left at the factory default. The programmability is only available to accommodate unique and creative application requirements that occur world wide.. Table 1-1 indicates the entry sequences required to customise all ST-809 parameters. • The entries must be made from the configuration mode. • Each prefix and suffix digit MUST have a tone duration of at least 1 second (button down). Other digits may be entered at normal dialing speed (greater than 50 mS and less than 500 mS). • While in the configuration mode, there is no interdigit timing. • • • • Time entries must be three digits. X X being any numeric character. M being the multiplier power of 10. When entries are saved to EEPROM (release of the long #) the call lamp will flash OFF twice and the alert tone will beep twice. If a mistake is made during entry, press and hold the * for longer than 1 second to erase the current entry sequence. Address entries may have 1 to 7 digits (X’s on the chart). Each digit may be any DTMF character. TABLE 1-1: CUSTOM CONFIGURATION Group Function Clear Current Entry Condition Prefix Keystrokes BAD ENTRY Suffix Factory Default * Return to Factory DEFAULT 99 1 Primary Address UN-MUTE RADIO 11 XXXXXXX NONE # 159D*86 1 Secondary Address UN-MUTE RADIO 12 XXXXXXX # DISABLED 1 Radio Kill KILL RADIO OPERATION 13 XXXXXXX # DISABLED 1 Primary Reset MUTE RADIO 21 (X)XXXXXX # PRIMARY + # 1 Secondary Reset MUTE RADIO 22 (X)XXXXXX # SECONDARY + # 1 Restore from Kill RESTORE RADIO OPERATION 23 (X)XXXXXX # KILL + # 2 Interdigit Time MAX. TIME BETWEEN DIGITS 31 XX M # 20 x 102 mS = 2000 mS 2 Call Lamp Flash ON / OFF TIME 50/50 DUTY CYCLE 32 XX M # 50 x 101 mS = 500 mS 2 Call Lamp Steady NO FLASH 32 00 0 # 2 Decode Momentary ON TIME 33 XX M # 3 Rx Input Sensitivity HIGH (30 - 850 mV) 41 20 # 20 X 102 mS = 2000 mS 3 Rx Input Sensitivity LOW (10 - 280 mV) 41 21 # 3 Mon/Reset Polarity GND TO MONITOR 41 30 # HIGH 3 Mon/Reset Polarity OPEN TO MONITOR 41 31 # OPEN TO MONITOR 3 Decode Latched ON = SINK 41 40 # ON = SINK 3 Decode Latched ON = SOURCE 41 41 # 3 Decode Latched OFF = MUTE 41 50 # 3 Decode Latched ON = MUTE 41 51 # 3 All Call DISABLED 41 60 # 3 All Call ENABLED 41 61 # 3 Transpond DISABLED 41 80 # 3 Transpond ENABLED 41 81 # 3 Sequence Length OVER LENGTH OK 41 70 # ON = MUTE ENABLED ENABLED 3 Sequence Length OVER LENGTH REJECT 41 71 # OVER LENGTH REJECT 4 Remote Control: MODE #1 SELECTIVE CALL OPERATION 42 1 # ENABLED 4 Remote Control: MODE #2 F1, F2, F3 42 2 # DISABLED 4 Remote Control: MODE #3 (F1, F2 INTERLOCKED), F3 42 3 # DISABLED 4 Remote Control: MODE #4 F1, F2, F3 ALL INTERLOCKED 42 4 # DISABLED DEFINITIONS & KEYSTROKES: PRIMARY ADDRESS CODE: The CALL LAMP OUTPUT flashes the lamp ON and OFF. This parameter sets the ON and OFF time. The range is: 100 to 900 mS with a 50/50 duty cycle. One to seven digit sequence, user-definable. Reception of this code activates all outputs including the PTT and TRANSPOND TONE outputs, which are generally used to key the radio transmitter momentarily and send an acknowledgement tone. The PRIMARY ADDRESS CODE may be recalled any number of times, setting off the momentary outputs each time, without resetting the decoder. The decoder may be reset locally by the “ON-HOOK” to “OFF-HOOK” transition of the MONITOR/RESET line. Remote reset occurs on receipt of the PRIMARY or SECONDARY RESET addresses. Receipt of the ALL RESET code ([#] for 5 seconds) also produces reset. NOTE:      [#] sets the CALL LAMP FLASH RATE to steady state ON. No flashing. SECONDARY ADDRESS CODE: Rx INPUT SENSITIVITY: Identical to PRIMARY with the exception that TRANSPOND TONE and PTT do not occur. This address is often used for group call. In Group applications, stations transponding simultaneously would produce radio interference with each other. To accommodate the wide range of possible input levels, two sensitivity ranges are available. HIGH (10 - 280 mVrms) and LOW (30 - 850mVrms). RADIO KILL: This is used to remotely disable selected radios. PTT and TRANSPOND output activate to acknowledge receipt of these signals. NOTE: Radio Kill status is stored in EEPROM to insure retention during loss of power. NOTE: The transpond tone is a double beep for RADIO KILL. RESET and RESTORE: The reset addresses factory default to equal the address code plus a # suffix. When a reset function is programmed as one digit it is inferred to be a suffix to the address code. When reset and restore are programmed to more than one digit, the programmed sequence becomes the reset or restore address. DECODER MOMENTARY OUTPUT: Following reception of a valid Primary or Secondary address sequence, this output conducts to (-) Supply (GND) for this time period. The range is 50 mS to 590 Sec. (9.83 min.) Example:      [#] sets DECODER MOMENTARY time to 5000 mS or 5 seconds. MONITOR/RESET POLARITY: The Monitor/Reset lead is normally connected to a radio monitor button or hook switch. This parameter sets the sense polarity. DECODE LATCHED OUTPUT SINK/SOURCE: The Decode Latched Output normally connects to the muting point in the radio. SINK refers to transistor Q6 being turned on presenting a low impedance between its collector (J1 pin 4) and (-) Supply. SOURCE refers to transistor Q5 being turned on presenting a low impedance between its collector and (+) Supply (J1 pin 4) (R17 limits the current output capability). In either mode, when OFF, J1 pin 4 is high impedance (open circuit). DECODE LATCHED OUTPUT: This is the time permitted between DTMF button presses by a calling party. The Factory default of 2000 mS is intended for normal manual dialing. If an automatic dialer is used, a shorter interdigit time reduces probability of false decodes. Shorter interdigit time reduced the delay before activation at the end of a sequence. The range is: 50 to 2300 mS. ACTIVE STATE: The Decode Latched Output normally connects to the muting point in the radio. Active state is the condition this output (J1- pin 4) provides to the host radio to produce Rx Audio Mute. Though SINK is the most common, SINK, SOURCE, and OPEN CIRCUIT are application possibilities. ON refers to the condition of J1 pin 4 as presented to the host radio when J1 pin 4 will SINK or SOURCE to MUTE the radio. OFF refers to the condition of J1 pin 4 as presented to the host radio when J1 pin 4 will SINK or SOURCE to UN-MUTE the radio. Example:      [#] sets interdigit time to 1000 mS or 1.0 seconds. ALL CALL: CALL LAMP FLASH RATE : ENABLE/DISABLE: Application parameter that permits the ALL CALL and ALL RESET functions (reception of > 6 Sec. of * or #) to be disabled. INTERDIGIT TIME: TRANSPOND: ENABLE/DISABLE: Application parameter that permits the TRANSPOND function to be disabled. This function is needed if TRANSPOND is not desired or legal, but RADIO KILL is required (PTT OUTPUT has to be hooked up). associated to the function may be turned ON or OFF individually or interlocked as described in the configuration chart. CALL LAMP = Function #1 (F1) = Pri. Address and Reset DECODE MOM = Function #2 (F2) = Sec. Address and Reset NOTE: Transpond applies to Primary, Primary Reset and all Remote control functions. DECODE LATCHED = Function #3 (F3) = Kill and Restore SEQUENCE LENGTH REJECT: NOTE: Interlocked functions do not have individual reset addresses. Activation of interlocked functions resets the associated function(s). ENABLE/DISABLE: The ST-809 verifies the length of an incoming DTMF sequence. To insure the sequence length is correct the ST-809 must look for additional digits before and following a valid sequence. This is why the ST-809 does not decode immediately on the release of the final digit in a valid sequence. This application parameter Disables the Sequence Length checking following the final digit in a valid sequence. When disabled the ST-809 will decode immediately on release of the final digit. REMOTE CONTROL: The ST-809 has four operational modes. As shipped from the factory, the ST-809 is configured for selective calling applications (MODE #1). By selecting one of three other operational modes 2, 3, or 4, the ST-809 may be used for Remote Control applications. When a Remote Control mode is selected the hook switch is disabled. Three of the outputs are redefined as open collector control outputs. The output NOTE: Remote control output states are stored in EEPROM to insure retention during loss of power. Example: In MODE 3, reception of the Primary Address sets F1 to ON and resets F2 to OFF. Reception of the Secondary Address sets F2 to ON, and resets the F1 to OFF. F3 is independent. Example: In MODE 4, reception of any function resets the other two functions. When any Remote Control function is set or reset, Transpond occurs. Transpond for remote control always consists of three beeps. A high frequency beep indicates ON a low frequency beep indicates OFF. Beeps 1 - 3 represent F1 - F3. WARRANTY POLICY All standard Selectone products are guaranteed to meet or exceed published performance specifications and are warranted against defects in material and workmanship for a period of five years from the date of purchase. Special configurations and non-standard systems are warranted for a period of one year. If any standard Selectone product fails to operate within the first 90 days from the date of purchase, Selectone will immediately send a replacement unit post-paid via airmail or UPS Orange Label (air), and will issue full credit, including freight, upon the return of the defective unit(s). Prepay/C.O.D. customers must return the defective equipment prior to exchange or will receive the replacement C.O.D. with credit issued only on the return of the defective equipment. After 90 days, this warranty is specifically limited to correction of the defects by factory or replacement of faulty equipment or parts. All warranty repairs must be performed at the Selectone factory in Hayward, California. No credit will be given for unauthorized repair work attempted by the customer. Any unauthorized alterations or modification of the equipment, damage by external sources, or removal or alteration of the serial number label or date code, will void the warranty. Specifically excluded from this warranty are batteries, fuses, lamps, and damage caused by lightning, power surges, or mechanical abuse. Equipment for repair must be returned with a Returned Materials Authorization (RMA) number visible on the shipping package. The RMA number may be obtained via Phone, Fax, or E-Mail. Additionally, returned equipment should be sent with a note briefly describing the nature of the defect. Equipment returned without an RMA number will receive no attention until Selectone Customer Service has been able to contact the shipper to obtain the necessary RMA information. For warranty service, contact Selectone Customer Service Department at (800) 227-0376, fax (510) 781-5454 or EMail at firstname.lastname@example.org. Send all repairs and returns with the associated RMA number visible on the shipping package to: Selectone, Inc. 3501 Breakwater Ave. Hayward, Ca. 94545-3610 ATTN: Warranty Repair ST-809 Component Locator Top View Bottom View ST-809 Schematic Diagram C2 +5Vdc R1 150K .01UF U1 18 C1 0.1UF C3 R2 100K J1- 12 Rx Signal Input (GREEN) 0.1UF +5Vdc VDD 17 ST/GT 16 4 1 EST VREF IN(+) GS 6 3 R3 PD 5 INH IN(-) 9 2 100K R4 100K VSS OSC2 +5Vdc C4 0.1UF C5 OSC1 Q1 Q2 Q3 Q4 STD TOE 8 7 11 12 13 14 15 U3 10 7 6 Y1 5 3.58 MHz 4 3 2 RA5 Vdd RA4 RC7 RA3 RC6 RA2 RC5 RA1 RC4 RA0 RC3 28 R5 10K 27 26 25 +5Vdc 2 8 7 6 5 DO DI U2 VDD 4 R7 10K +5Vdc 0.1UF 8870 3 24 SK CS 23 ORG 22 VSS 21 93LC46 10 RB7 RC2 RB6 RC1 RB5 RC0 R8 10K 20 R9 18 330K J1- 6 PTT Input (YELLOW) R10 330K J1- 7 Mon/Res Input (BROWN) J1- 2 Call Lamp #1 Output (VIOLET) 17 16 15 14 13 R11 4.7K 12 Q1 MMBT4401 11 J1- 11 RB4 R12 10K J1- 1 RB3 RB2 R13 J1- 13 Transpond Tone Output (WHT/GRN) RB0 OSC2 J1- 5 OSC1 Vss 1 Alert Tone Output (WHT/BLU) 10K RB1 R14 4.7K 9 Call Lamp #2 Output (BLUE) MCLR Vss Decode Mom Output (BLK/ORG) Q2 MMBT4401 8 19 J1- 10 Q3 PIC16C62 PTT Output (BLK/YEL) Vin R16 10K R15 4.7K DTC143T Q4 MMBT3906 Q5 R17 4.7K J1- 4 DTC143T Q6 Decode Latched Output (WHT/ORG) +5Vdc +5Vdc DTC143T U4 R6 330K Vin 5 C6 0.1UF 6 7 8 ERROR TAP FDBK VIN LP2951 VOUT SENS SHTDN VSS J1- 8 (BLK/BRN) J1- 9 Negative (-) Supply (BLACK) J1- 3 Positive (+) Supply (RED) 1 2 + 3 C7 2.2UF 4 C8 0.1UF .
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