M490B

M490B STMICROELECTRONICS | Alldatasheet

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SINGLE CHIP VOLTAGE SYNTHESIS TUNING SYSTEMS WITH 1 ANALOG CONTROL = M490B 16 STATION MEMORY - SINGLE DOT —_The M491Bis designed{or 7 segmentLED displays. LED DISPLAY Direct memory selection is possible only from = M491B 16 STATION MEMORY - 7 SEGMENT _remote control while Up/Down memory scanning is LED DISPLAY possible on the set and also from remote control. An «= VOLTAGE SYNTHESIZER : 13 BITS option input for 8 or 16 stations is available. = 4BAND PRESET CAPABILITY The circuits also include a PCM remote control re- = NON VOLATILE MEMORY : 304 BITS ceiver operating in conjunetion with the transmitter - 18 WORDS OF 19 BITS FOR TUNING — \\y¥708. The highly reliable transmission code en- VOLTAGE (13 bits) - BAND (2 bits) - FINE sures error free signal detection even in presence DETUNING (4 bits) of high noise conditions. - 10*MODIFY CYCLES PER WORD ~ MIN 10 YEARS DATA RETENTION Search of the station is possible in automatic or ma- «PCM REMOTE CONTROL RECEIVER : — nual modes. The circuits can operate with a Digital DECODES SIGNAL TRANSMITTED BY M708. (Of Linear AFT control. = VOLUME DYA : 6 BIT RESOLUTION/8 KHz The Digital AFT mode is necessary for automatic = MEMORY SKIP FUNCTION search and requires an external circuit (TDA4433 or « AUTOMATIC SEARCH WITH DIGITAL AFT equivalent, e.g. dual comparator plus TV station de- CONTROL tector) to convert the AFC-S-curve into a Up/Down = FINE DETUNING D/A ACTING ON AFT DIS- command. CRIMINATOR (16 steps) WITH SEPARATE Fine t i , ible with dit STORAGE FOR EACH MEMORY POSITION. frogae’nr' Couns) S also Possible wih ferent ALTERNATIVELY IT CAN BE USED TO CON TROL BRIGHTNESS OR COLOUR SATURA- The circuits are assembled in 40 pin dual in-line TION plastic package. | = MANUAL SEARCH WITH DIGITAL AFT CON- TROL « MANUAL SEARCH WITH LINEAR AFT « SWEEP SEARCH DISPLAY OUTPUT «= SUPPLY VOLTAGES : Voo = + 5V Vp = + 25 V FOR THE MEMORY = CLOCK OSCILLATOR : 445 TO 510 KHz « INTEGRATED DIGITAL POWER ON RESET EB (no external initialization circuitry required) Loe eat DESCRIPTION iil The M490B and M491B are monolithic N-MOS LSI circuits including a Floating-gate Non-Volatile Mem- DIP40 ory for storage of up to 16 stations. Tuning of the station is performed with a 8192 step D/A conver- ter, using the principle of voltage synthesis. ORDER CODE : mae Bt The M490B is designed to drive single dot LED dis- plays (one LED is necessary for each used memory position). Direct and Up/Down memory selection is possible on the set or from remote control. Memory positions 11 to 16 can be skipped in case of Up/Down commands.

Symbol Parameter Value [ unit | Supply Voltage Pin 3 28 v To. | Output Low Current m M490B 25 mA Led Driver Outputs | wasee 38 mA Pins6-14 20 mA Pins 4~5 75 mA All Other Outputs 5 mA . [toa | Max. Delay between Memory Timing and Memory Supply Pulses | 5 _ns_| Stresses above those listed under “Absolute Maximum Ralings” may cause permanent damage tothe device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections ofthis speci cation is not implied. Exposure to absolute maximum rating conditions for extended periods may atfect device reliability PIN CONNECTIONS gg (GND) qe «op VHFI 455 (6N0) qu cop VHF MEMORY SUPPLY {2 asp VHF Memory suecy 2 ash va OF MEMORY TIMING 3 sep caTy MEMORY TIMING 3 aah catv FINE TUN.O”A ab UNF FINE TUNA yp UNF TUNING oO” s asp ye TUNING Oo” ds 36h SGM. nei DIGAFT status Js asp 7 2GaFT status 6 ash SEGM.9 0SC.IN q7 up Ye OSC.IN q7 ap SEM. t osc our qe xb Ys 05¢ our qe asp seoM.e ; Yoo ds xb 21 Yo qs 2p vgg(Gnoy Test fo M490 2 Test qo Mast opr ene 1RIN qn sop Ye IRIN qn sof SEOM.d arty que asp ya aes diz ap seam ec | arrz qs ze) v2 AFT2 qs zap SEoM. > SwEEP DISPLAY qi. ah vi gMer aiseuay dg oh SEGM.a vouumE pa his 26 MAINS ON/OFF — VOLUME om 5 26f) MAINS. ON/OFF UNAFT DEF 16 asp MAINS ON ow arroee die asp MAINS Ow oGarten. — 7 up M oGacten ir ap x “3 qs ah a3 qr ah 2 w qs xp nm 2 19 zp Ey ” qo ap mow qz0 np xe S001 prey 2728 . wo & SGS-THOMSON JO

M490B STATIC ELECTRICAL CHARACTERISTICS (tans = 0 to 70 °C, Vpo = 5 V unless otherwise specified) [ine | Symbol [parameter | q Condit symbol est Conditions [in] [yp. [Max | 2-Memory Memory Supply | Ver=26v | ‘Supply Current Write Peak 42 | mA Average 12_| ma Erase | Peak mA Average i mA Read Peak a | mA Average 25 | mA [ R_ [Pulldown Resistor [ TT | ko | 3-Write Output Low Voltage! Voo=4.75V lo. -25mA | | | 8 | v | Timing Out [7 1G jon) | Output Leakage | Vop = 4.75 V Vour = 26 V WA Current lo to Vop =5.25V Vo join) =132V Toning ova |_12819 op = 5.25 V Vo coir) = 18. Sromme oN vo | | voonar5v tuesme || | | G-Digial AFT[ Vor || oo = 475V I e2oma | || 15 | v | ont [tow | [Vow = 825V Vowm=t32vi || 100 | ua | 9-Power Supply Current Vop = 5.25 V mA Supply 41-1. Input Viep Peak to Peak 13.2 v Voltage [tcf input tow Curent Vop =825Vva=tsv | | | =08 | ma | [| R [Pulp Resistor [Tso | ka | 1e—Dispiay | Vou | Von 475V to=20ma [| [18 |v | ot | tow | | Von =525V Vowmetz2v] | | 100 | ua | DA town Won 825 V Vow = VY] a MT Ou [town | | Woo =525V Vowm=ts2vi | | 50 | ua | APT Enable |" Vis feo; | Tv} te Voo=525V Va=08V | |_| mA R Pull-up Resistor {| 30 | Ka mee [ou Cor as v3 [vw fos PO vi [oe rawpaee [ae J ae ep scs-rtomson SY microzecrromics 4142

M490B STATIC ELECTRICAL CHARACTERISTICS (continued) | _rarameser | Test Condit esters | min. | Typ. | Max. | 21-22-23-24) ey Vou Voo =4.75 VV low = 1 mA v de“ pee 4 | 25-Mains On | v Enable vw ee po oo =8.25V Tf 0 | ma | [| RR [Pulup Resistor [Vasoav || 30 || ke | 26-Mains | Vo. | | Von = 4.75 V Io, = 100A | joa Tv | ower fo Vo = 4.75V Vo sory [=e | | [ma | ereseaol Va [Ps Kocadinn Me [| | v_| Kyboard In mH re a 7 and Display |__| Von =5.25V Ves osv || | -05 | ma | Out [ [Pup Resistor [| co || ke | [Voo=475V k=20ma | | [as | v | 31-22 PX [Von=475V lo=ima | | | oa |v | gure y e| Vo [| Moo =475V tostma | 3 Tv | | secarv Ja | sou} nL You [V0 = 4.75V tow == i50ua | 2a [| |v | wovwr of Va Po Tv a OD [own [Veo 5.25 V_ Vo tom = 1932 V [| | 50 | a | M491B : ALL PINS AS FOR M490B WITH EXCEPTION OF : 27-28-29-30) Vou Voo =4.75V lo. = 20 mA v 33-34-35 Display Out Se ees er | out | | [atMemory [vm fd eo | | (86 [ve [oe Tv DESCRIPTION (timings are with fciock = 500 KHz) PIN 1. Vss MODIFY CYCLE | The substrate of the IC is connected to this pin. It is A modify cycle consists of three steps : ___ feference pin for all parameters of the IC. 1. All"1"s are written in the bits of the selected word. ; 2. Alll bits of the selected word are erased (all "0"s) PIN 2, MEMORY SUPPLY VOLTAGE 3. The new content is written. | Asupply voltage of 25+ 1 V has to be applied to this | _ pin during the modify and read cycles. _ {yy SGs:THomMson 523 | SYM incrosnscreonce 143

In this way aconstant aging of all the bits ofthe word WRITE CYCLE. The peak of the current flowing is obtained. through pin 2 during a write operation is shown in During both write and erase cycles the memory situ- ig. 3, while fig. 4 shows the envelope of the same ation is checked continuously ; therefore aftereach current. write or erase pulse a read operation is carried out. The typical write time is 3-4 ms for the first cycles The write or the erase operations are stopped as —_ and increases to about 30 ms after 1000 cycles. soon as the result of the read operation is valid. Figure 3. soma for ma 4 |22| a4 =| JAPtER ABOUT 30msec Ses 5079 | Figure 4. ) 1 | (may | “0 | | | ‘Yoln | Typmax 20msec Tyomansmsee | tins $880 ERASE CYCLE. Fig. 5 shows the timing and the _ing the read cycle. The typical erase time is 10 ms waveform of the current flowing through pin 2 dur- for a new device and it increases with the number ing the erase operation. The peak current is 7 mA —_of modify operations up to 200 ms after 1000 cycles. (max) during the erase cycle and 6 mA (max) dur-

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Figure 7. se usec a ae —_ ‘ 2 7 | Fi __ wip RANGE ao Ym s- 606 fine TUNING OUTPUT The Fine tuning function operates as follows : Pulse modulation is implemented by combination of = Atthe start of any automatic or manual search, _ a rate multiplier and pulse width principle. the output is set at the mid range. With atuning . , 1g voltage increasing from zero, the num - When the search has been completed it 'S ber of pulses increases continuously up to 2° = 256 ; Possible to operate on FT + commands, starting from this point the number of pulses remains The store command memorizes this information the same but the pulses get larger unti they reach together with the 13 tuning voltage and 2 bitand he maximum content of the internal counter. The information ‘ in transi mation, , output consists of an open drain transistor which of- - Modification time of FT D/Ais of 1 stepevery200 fers a low impedance to ground when in the ON ms if issued locally or every 2 received signals tate from Remote control transmitter. PIN 5. TUNING D/A 2"? = 8192 step pulse modulated signal for the tuning voltage is available on this pin. | 88 {57 S&S:THOMSON | SY7 jmicromscrnowics 146

The minimum signal to be applied is 0.5 V peak to check of noise level ; the receiver checks para- peak. (AC coupled). sitic transient inside and outside the time win- The receiver input section performs the following dows. tests on the incoming signal to achieve the necess- __If the above test conditions are not fulfilled, the re- ary noise immunity : ceived word is rejected and not decoded. If the re- = Measurement of the pulse distance (time base _ceived signal is acknowledged as a valid word it is synchronization) stored an decoded. = check of the position of the received bits opening The end of transmission will be acknowledged bj window at the time b i eae low at the time bases receiving the end of transmission code or by means. ~ check of the parity bit of an internat timer if the transmission remains inter- = check of the absence of pulses between the rupted for more than about 550 ms. parity bit and the stop-puise Figure 11. AO Supply Voltage R c a © of TDA 2320 ~ M491B 5 22K | 4.7 nF MA490B/M491B REMOTE CONTROL RECEIVER TRUTH TABLE. TRANSMITTER M708 ; ADDRESS CODE N°8 1.R. Code _cs_[ ca | os Funetion __0 o | 0 0 0 0 End to Transmission 1 1 0 0 0 0 | Power On/Off 2 1 1 o | o 0 Mute On/Off 3 0 0 0 0 0 | Memory 1 4 1 0 0 0 0 Memory 2 5 0 1 ° 0 0 | Memory 3 6 1 1 oO oO i) Memory 4 7 ° ° ° 1 0 Fine Detuning Up 8 1 oO i) 1 0 Fine Detuning Down 9 0 1 o | 1 0 Memory 5 10 0 1 0 1 0 Memory 6 "1 1 1 0 1 0 Memory 7 12 1 1 0 1 oO Memory 8 13 1 0 0 0 + | Memory Up 14 1 1 0 0 1 Memory Down 15 0 0 0 0 1 Memory 9 16 1 0 0 0 1 | Memory 10 17 ° 1 ° 0 1 Memory 11 18 1 1 oO oO 1 Memory 12 toes ee scs-THomson

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MA490B/M491B REMOTE CONTROL RECEIVER TRUTH TABLE. TRANSMITTER M708 ; ADDRESS CODE N°8 Command Nf er | ez | es Toca [cs | co | Function 19 ) 0 0 1 1 Man. Search Up 20 1 Co) ) 1 1 Man. Search Down 21 i) 1 0 1 1 Memory 13 22 i) 1 oO 1 1 Memory 14 23 1 1 oO 1 1 Memory 15 24 oe 0 i 1__| Memory 16 . 25 0 oO 1 1 1 Volume Up pire 26 1 0 1 1 1 Volume Down J Oft 27 f) 1 1 1 1 Memory Addressing 28 0 1 1 1 1 Digital AFT On 29 1 1 1 1 1 Band Sequential 30 1 1 1 1 1 Automatic Search PIN 12-13. AFT1-AFT2 (STOP/AFT INPUTS) during any program or band change for the duration These pins are enabled during the automatic search__OF the Mute signal. and during normal operation, when the digital AFT These pins work according to the truth table given is enabled (see description of pin 17). below : The STOPYAFT inputs are also disabled intemally : M49X Pin 12 M49X Pin 13 Function TDA4433 Pin 2 TDA4433 Pin 6 (referred to the tuning voltage) : H L Up L H Down L L Middle H H No Operation | These inputs have two different functions depend- previous station. ing on whether the system is in the search or in nor- Alter this time the FAST UP speed is automati- mal operation (AFT control). cally reduced to half during each UP signal (ME- The inputs have internal pull-up resistors of 30 KQ DIUM UP = FAST UP/2). yp. A DOWN signal preceded by at least an UP sig- | A) Search mode : after depressing the Automatic TEAST Obie) aren 19 MEDIUM DOWN mode search or preset keys, the levels of the signals 4 - coming from the TOA4433, applied to these pins, eT ery nen the search to | control the search function and determine when speed (61 Hz). the search must stop, i.e. a TV station has been At this point the systems is in normal AFT oper- recognized. ation. The circuit operates in the following sequence _ 8) Digital AFT operation : when a station is per- (see fig. 12 for reference) : fectly tuned, the input signals coming from 1 - after pressing the search start key the search TDA4433 are at middle condition. ‘occurs in the FAST UP mode. If the tuning moves lower than the threshold 2 eventual transitions available on these inputs, below 38.9 MHz, the pin 12 is put H and pin 13 are ignored during the first 15 search steps if is put L: the 13 bit internal counter is moved | the system is in the UHF or CATV bands. SLOW UP speed to increase the varicap voltage. If the system operates in VHF | and Ill the first When a detuning occurs in the opposite direc- 60 search steps are ignored. The acceptance tion the input 12. goes Low and 13 goes High and delay of 15 (60) search steps has been intro- the tuning voltage is decreased with VERY duced to prevent the system from stopping at the SLOW DOWN speed (7.6 Hz). G57 S&s:THomson 11729 SY/ imcmosecrrowcs 149

The increase or decrease of the tuning voltage response curve which corresponds to the fully is stopped as soon as the input returns to middle transmitted sideband. conditions. At this point the AFT operation takes over as de- Therefore during normal operation pins 12 and scribed in point B above and the exact tuning is 13 act as digital AFT control command. achieved in about 0.2 sec. C) Recall from memory : when the digital AFT is This feature increases the AFT capture range enabled and an information is recalled from and relaxes the stability requirements of the Memory, a fixed value of 8 steps (~ 31.2 mV) is tuner, voltage references and the D/A converter. subtracted from the tuning voltage. If the Digital AFT is disable (pin 17 at Vss), the This corresponds to a detuning of 0.6 MHz (UHF) memory content is read without any change. and of 0.3 MHz in VHF Ill into that part of the IF Figure 12. 343336 37 ame | aes | sr RESPONSE es NORMAL. AFC POSITION souine | SEARCH DIRECTION [sare : t “o a Fouts | <one > 30.amier bm rst meow uP MEDIUM _oOWN siow_up SEARCH START = Legos | $3028 5) | “So Ome ’ | NORMAL AFC OPERATION erm cme | | j ~yanicar vows sop | pow -—-f——---— f SNL foe fe | ting / SS | eee a i) ae ! er) | / see a —_ RAUGRORLSCTOMNCE

PINS 18-19-20-21-22-23-24. (keyboard matrix) Figure 15. Pim 20 mnie N18 pins2e 23022 9 9 > 9 9 x} a] xa] xe na vz va afr ON] sea H pneser iN nN A AUTOMATIC. SEARCH MEMORY ADDRESSING N . iN nan BANO seanca | 61 uP STORE * ca “ f h h \\ stunen vouume | 94% | wire own own caTy b \\ I. iN ‘A command is accepted if the corresponding con- __skipped in groups of 2 connecting the relevant Y tact has been closed for a minimum time of 30 ms. input to GND. } Local input commands and I.R. commands have the In the M491B the memory locations 9 to 16 are | same priority jumped if pin 31 is at GND. | If a complete 1.R. command has been received, the ; localinputs are blocked until the command has been BAND SELECTION executed and the "end of transmission code"gener- The bands can be directly selected or with a step- ated. by-step command with the following sequence : Viceversa an |.R. signal cannot be decoded until an VHF | issued local command has been executed. CATV VHF Il MEMORY UP/DOWN UHF Depressing one of these two commands, the mem- VHF | and so on ory position is stepped in the UP or DOWN direc- Only one band change is performed at each ac- tion. cepted command. If the key is kept closed, the channels are stepped —_ Disabled bands are automatically skipped. A band UP/DOWN every 0.5 second orevery5 commands —_can be disabled connecting the corresponding out- from the transmitter. put to Vss. In the M490B the locations from 11 to 16 can be 1423 > SY iscrosscreosca 15:

ning of the next band after a 480 ms interruptionwith command. The search is stopped when the first station is found HF | band as described in automatic search mode. STOP/AFT inputs controlled by the TDA4433 which cally stored in the Non-Volatile Memory. Its important to call the attention to the Digital AFT __ tion of the lowest address. Figure 16. mands pressed, the tuning voltage is increased or | Asa result of the use of the Digital AFT, the require- _!ease of the key.

d) MANUAL UP/DOWN WITH LINEAR AFT (pin 17 The volume is automatically muted 3 second after at Vss). When this controls used the Digital AFT is __ the key pressure and is immediately restored at the disabled. release of the key. The Linear AFT output goes low after an up or down Tuning speeds are as follows : command is issued and it remains Low 1 second after the release of the key. , time afters [Atter2s | afterss | VHF | 64 128 256 512 VHF II! 64 128 256 512 VHF 16 32 64 128 CATV 16 32 64 128 FINE TUNING UP/DOWN matically switched on when Voo is applied and See description of pin 4. memory 1 is read. Ititis connected to Von the circuit goes in stand by DIGITAL AFT ON condition. See description of pin 17. PIN 26. MAINS ON/OFF OUTPUT VOLUME UP/DOWN Switch on of the set is controlled by the Mains on See description of pin 15. command issued for more than 0.3 s. The output }escription of pin 15. transistor is set in the off condition to drive through MAINS ON/OFF an integrated pull-up resistor, an external NPN tran- See description of pins 25 and 26. sistor. Figure 17. STORE COMMANDS gure 2 modes of operations are available. + a) store +5V _b). memory addressing |" Inorder to protect the memory, the store function is | __ internally disabled after one store cycle. Itis enabled after a program change or a tuning oper- ation (itis not disabled by the Digital AFT control). a) STORE. The tuning information (Tuning D/A, | Fine tuning D/A and band) is stored in a previously selected memory address when this command is is- | sued. s-60231 | __b) MEMORY ADDRESSING. The tuning informa- | tion can also be stored with this command followed Ateach Mains on command a memory read out oc- by the memory position selection. curs. A Vpp (+ 25 V) is required for this operation, a i 1 second delay starts when the mains output is | ll Mien this corpmand is accepted all the memory itched off. For a correct reading of the memory ° a ‘the Vee supply voltage must reach the value of 25 Selection of the memory position initiates the store within 1 second after a Mains on command, operations and restores the display, ° In case of automatic switch on at power on caused MUTE ON/OFF by pin 25 at GND, the total delay is of 1.13 second (0.13: Ve lus 1 fe See description of pin 15. (0.138 Af ‘00 power on reset plus 1 second for "PIN 25, MAINS ON OPTION INPUT The Mains on/off command, if repeated, will switch If connected to Vss (GND) the Mains output is auto- the output on (set off). | SS 154

The last address information is preserved until Voo_ Selection of a memory location is provided connect- is present. ing one address input line with an X scanning line Next Mains on command will switch the set at the ff more than 30 ms ; this condition is internally previously selected memory address and a read latched and the corresponding output buffer is Operation will be performed. switched on to drive the LED. y Max drive capacity is of 20 mA with Vo. = 1.5 V ASee necroueGr ~ MEMORY AD- 2 output are provided and 16 channel display is achieved multiplexing the LEDs with the control out- M490B puts "2". Up to 16 Memory locations can be selected. If pins 34, 35, 36 are connected to Vss, the corres- aan ponding memory locations are skipped in case of When Voo is applied to the circuit the address is p/down memory commands. automatically preset to the first memory location. Figure 18. astonaV — —y7 > po cS _ Wi yr ; . " f| nem Tot 0 vel v7 vel vst ve] vl v2] vy 22 xl bes ema) (PIN20) 5 -so2n M4918 Pin 32 must be grounded. These pins operate as output only for display of the __I pin 31 is grounded, the memory position 9 to 16 selected memory location. Max drive capability is of are skipped in case of memory up/down commands. 15 mA/1.2 V with the exception of pin 36 that is of For normal operation pin 31 can be left open or, bet- 30 mA/1.5 V. ter, connected to Vop. "Direct memory selection is only possible by remote control. A local memory up/down commandis avail PINS 31-32 able in case of emergency. See description of pins 27 to 30 and 33 to 36. | Fe ststoson 8D | 7 Sesame 155

PINS 37-38-39-40. BAND INPUT/OUTPUT lone or more bands have to be skipped, the corre- These outputs are provided to select up to 4 bands SPonding outputs have to be short-circuited to Vss via external PNPs. Figure 19. maxia2v The relation between pins and bands are as follows : pin 37 = UHF U pin 38 = CATV i] i pin 39 = VHF Ill pin 40 = VHF I s~ sso INPUT/OUTPUT CONFIGURATION Output Open Drain. Output Push-pull. 4) Yoo an) Pin 26. Tb025 | 35, 36 (M491B) S- 6026 | Inputs with Pull-up Load. Inputs/Output with Pull-up Resistor (M490B only) Yoo Yoo s-6077 j S" 6oze Pins 12, 13, 17, 18, 19, 20, 25 (M490B and M491B) Pin 31 (M491 only) Pins 27, 28, 29, 30, 33, 34, 35, 36. | 823 1 <1 | SS 156

Inputs/Outputs (std). Oscillator. Yoo Pin 8 | ot “ ‘S~ 6029 Pin? k | Pins 97, 38, 39, 40, 21, 22, 23, 24 (21, 22, 23, 24 oot are used only for testing purposes). 56031 IR Input. Yoo 5-605 3 1923

Manual Search with Linear AFT. LOCAL COMMANDS 1 - Memory Up 8 - Power Oniort roc . ~ Volume $5 3 ogre ail 8 - Volume Down #8 4. - Search Down 9 - Store © 5 - Band Sequential 4F 4 . F é -H8 | ‘a : | Bilis, | 3 BAF o . | ha [ss Y Is i) an | 30 E 5 a ge 3 g e58 a & 82g 3 32 = 3 orb 8 4% a fF 4 ba BY 34 2 y e 3 iH | er H $ F ‘nee 20] 32 3 Si, » 2 s= Eu elels z % > SUISQS oo 3 8 cs de fel

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Automatic Preset Digital AFT Fine Tuning with D/A LOCAL COMMANDS: 1 - Memory Up 7 - Power on/off 2 -Memory Down 8 - Volume Up oT 3. - Automatic Search 9 - Volume Down 28 4 - Fine Tuning Up 10 - Automatic Preset 33 5 - Fine Tuning Down 11.» Memory Addressing 1 oe 6 - Band Sequential 4 . F ES <8 As E N i 5 a: ain 7 3 BU 8 a > t. ye 3 a 3 3 2 as : Be +e \\| | 9 s82 Tals q 5 aa 8, HH es gas. gg gh sb gy 2 303) sl 3 » Sty sheisig 3 . —— 7a8(jaais —4 z |: ap ag yates Y . g 2 +L == —~ z nee Geng erea ye] ne foot way fs Daan [o . Fl) Qt ge Ba} 43 ae + IH BO Ff x3 of — if 2 Pars HS @ ob |. 3} tHE Z| 3 a = Bi a “a3 + | rw = be to. el- | Pars og 4 th org 3 4. - 4 + S ss gp 4 FE z le R faegsgag s \\ Te! as} 3 - 3 7 eA KK | S868 -THOMSON 2123 | 7 Ses-Tmomsom 159

Automatic Preset Digital AFT Manual Up/Down LOCAL COMMANDS 4/2. - Memory Up/Down 8 - Power OniOft 3/4 - Manual Search up/Down 9/10 - Volume Up/Down ott 5 - Digital AFT On 11. - Automatic Preset Zs 6 - Automatic Search 12 - Store 33 7 - Band Sequential 4 . , Fi Fy -H3 3 re’, 44 25 . 30 3 E Mok * 3 | ios od ig 83 g q S38 & (|e 232 6 . Fi BE § 85258 3 . * ~\\VPa fg Is glk 6 3 i} ) 2¢ al) ¢ ¢ ) g wlsh oes oS s] Si) x » 30 Stay stghshs —! ; 3 ia i ss 3 ase e tat Lo 7 ql Se: 4 BES Ba Se cel HEIR Eo 5 2) SE 2 ge 8 al. yy Fs 5 - HM au tits s 8 q QI ee 3g Cece eee | Z is of taal | F > S feesge 3 iN i \\ N “ | jo gs | 22/23 =

M491. Manual Search with Linear AFT (16 memory option) LOCAL COMMANDS 6 -P ont cd 1 -M Uj - Power Oni zs 2 “Memory Down 7 - Volume Up 38 3 - Search Up & Volume Down

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