Alto_Digan2.14_Service_Manual电路图.pdf

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1、 Version 1.0 MODEL: DIGAN2.14 RadioFans.CN 收音机爱好者资料库 CONTENTS 1. Introduction.1 2. Specifications.2 3. Block Diagram.3 4. Schematic Diagram.4 5. Wiring Diagram.9 6. PCB Layout.10 7. Test Procedure.12 8. Exploded Views & Mechanical Parts List.14 9. BOM.16 RadioFans.CN 收音机爱好者资料库 Digital control and

2、DSP technology with graphic display 14 bands Graphic or parametric equalization. Dynamic range processing with Ratio, Threshold, Attack and Release time control. Tone adjustment with Bass and Treble control. 100 presets: 30 factory presets and 70 user- programmable presets. 32 24 bit DSP processing

3、with or without link control. Stereo channels processing with or without link control. +/- 12dB boost/cut for every bands adjustment. Master volume control. EQ Bypass function support. USB control interface for easy operating with PC editor. 2 balanced 1/4” TRS jacks and 2 unbalanced 1/4” TRS jacks.

4、 1 RadioFans.CN 收音机爱好者资料库 1. Introduction DIGAN2.14 Band2 14 bands, 2/3 octave Bandwidth20Hz- 20kHz THD+N%90dB A- Weighted, Analog In to Analog Out Input gain+/- 12dB Output gain+/- 6dB System parametric PresetFactory preset: 30, User preset:70 InputsBalanced XLR and 1/4” TRS connectors Input imped

5、anceBalanced 50Kohm, Unbalanced 25Kohm Input Section Input levelMaximum Input Level: +125dBu OutputsBalanced XLR, 1/4” TRS and SPDIF connectors Output impedanceBalanced 120ohm, Unbalanced 60ohm Output Section Output levelMaximum Output Level: +125 dBu USB serial portUSB1.1 Input voltage9 Volt AC Pow

6、er TransformerPower supply (AC/AC adapter)Power consumption8W Dimension (W D H)483 150 44mmPhysical Net weight4.8lbs (2.15kg) 2 2. Specification ( 1) Pa n e l : LED , U P/ D O W N , LINK / EXIT , B Y PA S S ( 2 ) D S P b o a r d : T A S 30 0 4+M CU ( m o t o r o l a ) +EEPRO M D S P D IG A N 2 . 14

7、: B Y PA S S LINK / EXIT PO W ER S T O RE D IG A N 2 14 T A S 30 0 4 + M CU + EEPRO M LED + K EY 3 Hardware Panel Black Diagram 3. Block Diagram 123456789101112 A B C D 121110987654321 D C B A R39 47R R40 47R Q18 BR R41 47R R42 47R R43 47R R44 47R R45 47R R46 47R R47 47R R48 47R R49 47R R50 47R R51

8、47R R9 4K7 R10 4K7 R11 4K7 R12 4K7 R13 4K7 R14 4K7 R15 4K7 R16 4K7 R17 4K7 R18 4K7 R19 4K7 R20 4K7 R21 4K7 CA0 CA1 CA2 CA3 CA4 CA5 CA6 CA7 CA8 CA9 CA10 CA11 CA12 CA13 CA14 CA15 L53 YEL L55 YEL L57 YEL L59 YEL L61 YEL L63 YEL L65 GR L67 YEL RA9 L69 YEL L71 YEL L73 YEL L75 YEL L77 YEL RA0 RA1 RA2 RA3

9、RA4 RA5 RA6 RA7 RA8 RA10 RA11 RA12 L54 YEL L56 YEL L58 YEL L60 YEL L62 YEL L64 YEL L66 GR L68 YEL L70 YEL L72 YEL L74 YEL L76 YEL L78 YEL RA0 RA1 RA2 RA3 RA4 RA5 RA6 RA7 RA8 RA9 RA10 RA11 RA12 L79 YEL L81 YEL L83 YEL L85 YEL L87 YEL L89 YEL L91 GR L93 YEL L95 YEL L97 YEL L99 YEL L101 YEL L103 YEL RA

10、0 RA1 RA2 RA3 RA4 RA5 RA6 RA7 RA8 RA9 RA10 RA11 RA12 L80 YEL L82 YEL L84 YEL L86 YEL L88 YEL L90 YEL L92 GR L94 YEL L96 YEL L98 YEL L100 YEL L102 YEL L104 YEL RA0 RA1 RA2 RA3 RA4 RA5 RA6 RA7 RA8 RA9 RA10 RA11 RA12 L105 YEL L106 YEL L107 YEL L108 YEL L109 YEL L110 YEL L111 GR L112 YEL L113 YEL L114 Y

11、EL L115 YEL L116 YEL L117 YEL RA0 RA1 RA2 RA3 RA4 RA5 RA6 RA7 RA8 RA9 RA10 RA11 RA12 L118 YEL L120 YEL L122 YEL L124 YEL L126 YEL L128 YEL L130 GR L132 YEL L134 YEL L136 YEL L138 YEL L140 YEL L142 YEL RA0 RA1 RA2 RA3 RA4 RA5 RA6 RA7 RA8 RA9 RA10 RA11 RA12 L119 YEL L121 YEL L123 YEL L125 YEL L127 YEL

12、 L129 YEL L131 GR L133 YEL L135 YEL L137 YEL L139 YEL L141 YEL L143 YEL RA0 RA1 RA2 RA3 RA4 RA5 RA6 RA7 RA8 RA9 RA10 RA11 RA12 L144 YEL L146 YEL L148 YEL L150 YEL L152 YEL L154 YEL L156 GR L158 YEL L160 YEL L162 YEL L164 YEL L166 YEL L168 YEL RA0 RA1 RA2 RA3 RA4 RA5 RA6 RA7 RA8 RA9 RA10 RA11 RA12 L1

13、45 YEL L147 YEL L149 YEL L151 YEL L153 YEL L155 YEL L157 GR L159 YEL L161 YEL L163 YEL L165 YEL L167 YEL L169 YEL RA0 RA1 RA2 RA3 RA4 RA5 RA6 RA7 RA8 RA9 RA10 RA11 RA12 L170 YEL L171 YEL L172 YEL L173 YEL L174 YEL Q16 HR R29 4K7 L175 YEL L176 GR L177 YEL VDD L178 YEL L179 YEL L180 YEL L181 YEL 12 L1

14、82 YEL RA0 RA1 RA2 RA3 RA4 RA5 RA6 RA7 RA8 RA9 RA10 RA11 RA12 Q15 HR R28 4K7 VDD Q14 HR R27 4K7 VDD Q13 HR R26 4K7 VDD Q12 HR R25 4K7 VDD Q9 HR R22 4K7 VDD Q8 HR R8 4K7 VDD Q7 HR R7 4K7 VDD Q6 HR R6 4K7 VDD Q5 HR R5 4K7 VDD R24 120R R23 120R Q19 BR Q20 BR Q21 BR Q22 BR Q23 BR Q24 BR Q25 BR Q26 BR Q2

15、7 BR Q28 BR Q29 BR Q30 BR D19 IN4148 S1 SW-PB D1 IN4148 S2 SW-PB D2 IN4148 S3 SW-PB D3 IN4148 S4 SW-PB D4 IN4148 S5 SW-PB D5 IN4148 S6 SW-PB D6 IN4148 S7 SW-PB D7 IN4148 S8 SW-PB D8 IN4148 S9 SW-PB D9 IN4148 S10 SW-PB D10 IN4148 S11 SW-PB D11 IN4148 S12 SW-PB D12 IN4148 S13 SW-PB D13 IN4148 S14 SW-P

16、B L183 YEL L184 YEL L185 YEL L186 YEL L187 YEL L188 YEL RA0 RA1 RA2 RA0 RA1 RA2 D17 IN4148 S18 SW-PB D18 IN4148 S19 SW-PB D15 IN4148 S16 SW-PB D16 IN4148 S17 SW-PB D14 IN4148 S15 SW-PB CA0 CA1 CA2 CA3 CA4 CA5 CA6 CA7 CA8 CA9 CA10 CA11 CA12 CA13 RA5 RA6 RA7 RA8 RA9 RA10 RA11 RA12 Q10 HR Q11 HR UP DOW

17、N STORE BYPASS LINK/EXITVDD R_SIGNAL LINK L_CLIP L_SIGNAL BYPASS 2412 U3B 74HC154C3 100N 2010 U2B 74HC574 C2 100N 2010 U1B 74HC574 VDD GND C1 100N VDD 12 34 56 78 910 1112 1314 1516 1718 1920 2122 2324 2526 2728 CN1 HEADER 14X2 D0 D1 D2 D3 D4 D5 D6 D7 VDD GNDGND L1 YEL L2 YEL L3 YEL L4 YEL L5 YEL L6

18、 YEL L7 GR L8 YEL L9 YEL L10 YEL L11 YEL L12 YEL D7 D6 D5 D4 D3 L13 YEL D2 D1 RA0 RA1 D0 RA2 Q8 12 Q7 13 Q6 14 Q5 15 Q4 16 Q3 17 Q2 18 Q1 19 D1 2 D2 3 D3 4 D4 5 D5 6 D6 7 D7 8 D8 9 CLK 11 OC 1 U2A 74HC574 RA3 Q8 12 Q7 13 Q6 14 Q5 15 Q4 16 Q3 17 Q2 18 Q1 19 D1 2 D2 3 D3 4 D4 5 D5 6 D6 7 D7 8 D8 9 CLK

19、 11 OC 1 U1A 74HC574 RA4 D0 RA5 RA6 D1 RA7 RA8 D2 RA9 RA10 D3 RA11 RA12 D4 L14 YEL L15 YEL D5 L16 YEL L17 YEL D6 D7 L18 YEL PB0 L19 YEL PB1 L20 GR PB2 PB3 PB4 PB5 PB4 PB5 L21 YEL L22 YEL L23 YEL GND GND GND L24 YEL L25 YEL R3110K R3210K L26 YEL RA0 RA1 RA2 RA3 RA4 RA5 RA6 RA7 RA8 RA9 RA10 RA11 RA12

20、L27 YEL L29 YEL L31 YEL L33 YEL L35 YEL STB_0 STB_1 L37 YEL STB_2 L39 GR STB_3 STB_4 STB_5 STB_6 STB_7 STB_8 STB_9 L41 YEL STB_10 STB_11 STB_12 L43 YEL L45 YEL L47 YEL L49 YEL L51 YEL RA0 RA1 RA2 RA3 RA4 RA5 RA6 RA7 RA8 RA9 RA10 RA11 RA12 L28 YEL L30 YEL L32 YEL L34 YEL L36 YEL Q4 HR R4 4K7 L38 YEL

21、L40 GR L42 YEL VDD L44 YEL L46 YEL STB_0 STB_1 STB_2 STB_3 L48 YEL STB_4 L50 YEL STB_5 STB_6 STB_7 STB_8 STB_9 L52 YEL STB_10 STB_11 STB_12 RA0 RA1 RA2 RA3 RA4 RA5 RA6 RA7 RA8 RA9 RA10 RA11 RA12 CA14 CA15 Q3 HR R3 4K7 VDD Q2 HR R2 4K7 VDD Q1 HR R1 4K7 VDD CA13CA12CA11CA10CA9CA8CA7CA6CA5CA4CA3CA2CA1C

22、A0 RA0 RA1 RA2 RA3 RA4 RA5 RA6 RA7 RA8 RA9 RA10 RA11 RA12 CA0 CA1 CA2 CA3 CA4 A 23 B 22 C 21 D 20 G1 18 G2 19 0 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 13 12 14 13 15 14 16 15 17 U3A 74HC154 PB0 PB1 PB2 PB3 GND A 23 B 22 C 21 D 20 G1 18 G2 19 0 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11

23、 13 12 14 13 15 14 16 15 17 U4A 74HC154 PB0 PB1 PB2 PB3 CA16 CA17 CA18 CA19 CA20 CA21 CA22 CA23 CA24 CA25 CA26 CA27 CA28 CA29 SEL_1 SEL_0 SEL_0 SEL_1 D30 IN4148 S30 SW-PB D20 IN4148 S20 SW-PB D21 IN4148 S21 SW-PB D22 IN4148 S22 SW-PB D23 IN4148 S23 SW-PB D24 IN4148 S24 SW-PB D25 IN4148 S25 SW-PB D26

24、 IN4148 S26 SW-PB D27 IN4148 S27 SW-PB D28 IN4148 S28 SW-PB D29 IN4148 S29 SW-PB D31 IN4148 S31 SW-PB D32 IN4148 S32 SW-PB D33 IN4148 S33 SW-PB CA16 CA17 CA18 CA19 CA20 CA21 CA22 CA23 CA24 CA25 CA26 CA27 CA28 CA29 2412 U4B 74HC154C4 100N L241 YEL L242 YEL L243 YEL L244 YEL L245 YEL L246 YEL L247 GR

25、L248 YEL RA9 L249 YEL L250 YEL L251 YEL L252 YEL L253 YEL RA0 RA1 RA2 RA3 RA4 RA5 RA6 RA7 RA8 RA10 RA11 RA12 L254 YEL L256 YEL L258 YEL L260 YEL L262 YEL L264 YEL L266 GR L268 YEL L270 YEL L272 YEL L274 YEL L276 YEL L278 YEL RA0 RA1 RA2 RA3 RA4 RA5 RA6 RA7 RA8 RA9 RA10 RA11 RA12 L255 YEL L257 YEL L2

26、59 YEL L261 YEL L263 YEL L265 YEL L267 GR L269 YEL L271 YEL L273 YEL L275 YEL L277 YEL L279 YEL RA0 RA1 RA2 RA3 RA4 RA5 RA6 RA7 RA8 RA9 RA10 RA11 RA12 L280 YEL L282 YEL L284 YEL L286 YEL L288 YEL L290 YEL L292 GR L294 YEL L296 YEL L298 YEL L300 YEL L302 YEL L304 YEL RA0 RA1 RA2 RA3 RA4 RA5 RA6 RA7 R

27、A8 RA9 RA10 RA11 RA12 L281 YEL L283 YEL L285 YEL L287 YEL L289 YEL L291 YEL L293 GR L295 YEL L297 YEL L299 YEL L301 YEL L303 YEL L305 YEL RA0 RA1 RA2 RA3 RA4 RA5 RA6 RA7 RA8 RA9 RA10 RA11 RA12 L306 YEL L308 YEL L310 YEL L312 YEL L314 YEL L316 YEL L318 GR L320 YEL L322 YEL L324 YEL L326 YEL L328 YEL

28、L330 YEL RA0 RA1 RA2 RA3 RA4 RA5 RA6 RA7 RA8 RA9 RA10 RA11 RA12 L307 YEL L309 YEL L311 YEL L313 YEL L315 YEL L317 YEL L319 GR L321 YEL L323 YEL L325 YEL L327 YEL L329 YEL L331 YEL RA0 RA1 RA2 RA3 RA4 RA5 RA6 RA7 RA8 RA9 RA10 RA11 RA12 L332 YEL L333 YEL L334 YEL L335 YEL L336 YEL L337 YEL L338 GR L33

29、9 YEL L340 YEL L341 YEL L342 YEL L343 YEL L344 YEL RA0 RA1 RA2 RA3 RA4 RA5 RA6 RA7 RA8 RA9 RA10 RA11 RA12 L345 YEL L347 YEL L349 YEL L351 YEL L353 YEL L355 YEL L357 GR L359 YEL L361 YEL L363 YEL L365 YEL L367 YEL L369 YEL RA0 RA1 RA2 RA3 RA4 RA5 RA6 RA7 RA8 RA9 RA10 RA11 RA12 L346 YEL L348 YEL L350

30、YEL L352 YEL L354 YEL Q43 HR R58 4K7 L356 YEL L358 GR L360 YEL VDD L362 YEL L364 YEL L366 YEL L368 YEL L370 YEL RA0 RA1 RA2 RA3 RA4 RA5 RA6 RA7 RA8 RA9 RA10 RA11 RA12 Q42 HR R57 4K7 VDD Q41 HR R56 4K7 VDD Q40 HR R55 4K7 VDD Q39 HR R54 4K7 VDD Q38 HR R53 4K7 VDD Q37 HR R52 4K7 VDD Q36 HR R38 4K7 VDD

31、Q35 HR R37 4K7 VDD Q34 HR R36 4K7 VDD L189 YEL L191 YEL L193 YEL L195 YEL L197 YEL L199 YEL L201 GR L203 YEL L205 YEL L207 YEL L209 YEL L211 YEL L213 YEL RA0 RA1 RA2 RA3 RA4 RA5 RA6 RA7 RA8 RA9 RA10 RA11 RA12 L190 YEL L192 YEL L194 YEL L196 YEL L198 YEL L200 YEL L202 GR L204 YEL L206 YEL L208 YEL L2

32、10 YEL L212 YEL L214 YEL RA0 RA1 RA2 RA3 RA4 RA5 RA6 RA7 RA8 RA9 RA10 RA11 RA12 L215 YEL L217 YEL L219 YEL L221 YEL L223 YEL L225 YEL L227 GR L229 YEL L231 YEL L233 YEL L235 YEL L237 YEL L239 YEL RA0 RA1 RA2 RA3 RA4 RA5 RA6 RA7 RA8 RA9 RA10 RA11 RA12 L216 YEL L218 YEL L220 YEL L222 YEL L224 YEL Q33

33、HR R35 4K7 L226 YEL L228 GR L230 YEL VDD L232 YEL L234 YEL L236 YEL L238 YEL L240 YEL RA0 RA1 RA2 RA3 RA4 RA5 RA6 RA7 RA8 RA9 RA10 RA11 RA12 Q32 HR R34 4K7 VDD Q31 HR R33 4K7 VDD Q17 HR R30 4K7 VDD CA16CA17CA18CA19CA20CA21CA22CA23CA24CA25CA26CA27CA28CA29 1 2 3 4 5 CN2 5P2.5 1 2 3 4 5 CN3 5P2.5 4 123

34、45678 A B C D 87654321 D C B A +5VD+3.3V U6 LM1117- 3.3 C5 10uF C45 47uF INOUT GND IN GND GNDGND GND GNDGNDGND RX TX GND C43100N R15 10K R16 100R C41 100N PA0 C40 100N PA1 C42 100N PA2 PTA0 32 PTA1 33 PTA2 34 PTA3 35 PTA4 36 PTA5 37 PTA6 38 PTA7 39 PTB0/A 22 PTB1/A 23 PTB2/A 24 PTB3/A 25 PTB4/A 26 P

35、TB5/A 27 PTB6/A 28 PTB7/A 29 PTC0 2 PTC1 3 PTC2 4 PTC3 5 PTC4 6 PTC5 7 PTC6 8 PTD0 12 PTD1 13 PTD2 14 PTD3 15 PTD4 18 PTD5 19 PTD6 20 PTD7 21 PTE0/T 9 PTE1/R 10 IRQ 11 RST 1 OSC1 44 OSC2 43 CGMXFC 42 VREFH 30 VREFL 31 VSS 16 VSSA 41 VDD 17 VDDA 40 U4 HC908GP32 PA3 C44 0.47uF PA4 PA5 PA6 PA7 C39 100N

36、 C28 2u2F R17 10K NC 1 NC 2 A2 3 GND 4 SDA 5 SCL 6 NC 7 VCC 8 U3 AT24C64 PD7 PD6 PD5 PD4 RESET PA0 PA1 PA2 PA3 PA4 PA5 PA6 PA7 PD0PD1 PD2PD3 PD4PD5 PD6PD7 LGNDLGND PB6 PB5 PB0 PB1 PB2 PB3 PB4 PB7 PD0 PD1 PD2 PD3 X1 12.288MHz C33 22P GNDGND C38 22P TXD 1 DTR_N 2 RTS_N 3 VDD_232 4 RXD 5 RI_N 6 GND 7 V

37、DD 8 DSR_N 9 DCD_N 10 CTS_N 11 SHTD_N 12 EE_CLK 13 EE_DATA 14 DP 15 DM 16 VDD_3V3 17 GND_3V3 18 RESET 19 VDD 20 GND 21 TRI_MODE 22 LD_MODE 23 VDD_PLL 24 GND_PLL 25 PLL_TEST 26 OSC1 27 OSC2 28 U5PL2303 GND +3.3V C47 100N GND C46 100NGND R3122R R3022R R29 1K5 GND +3.3V C49 33P C50 33P C48 100N GND TX

38、RX CLK 1 2 3 4 5 6 7 CN5 HEADER 7 12 34 56 78 910 1112 1314 1516 1718 1920 2122 2324 2526 2728 CN4 HEADER 14X2 LINA 1 VRFILT 2 AVSS 3 AVSS 4 INPA 5 RESET 6 CS1 7 PWR_DN 8 TEST 9 CAP_PLL 10 CLKSEL 11 MCLKO 12 XTALI 13 XTALO 14 SCL 15 SDA 16 DVDD 17 DVSS 18 LRCLK/O 19 SCLK/O 20 IFM/S 21 SDIN1 22 SDIN2

39、 23 SDOUT2 24 SDOUT0 25 SDOUT1 26 ALLPASS 27 GPIO0 28 GPIO1 29 GPIO2 30 GPIO3 31 GPIO4 32 GPIO5 33 NC 34 AVDD 35 NC 36 AOUTR 37 VCOM 38 AOUTL 39 RINA 40 RINB 41 AINRP 42 AINRM 43 VREFP 44 VREFM 45 AINLM 46 AINLP 47 LINB 48 U2 TAS3004 R64K7 +3.3V +3.3V GND GND AGND AVDD R26 4R7 AVDD L1 BEAD* AGND C30

40、 10uF C29 10uF AGND C31 10uF C32 10uF R1100R R2100R R10 10K R9 10K AGND AGND 1 2 3 4 5 6 CN1 CON11 SCL SDA RESET CLK C23 2u2F C13 100N GND C27 2u2F C19 100N AGND C2 2u2F C12 100N AGND C26 2u2F C18 100N AGND C37 1000P AGND R1427K* C36 1000P R1327K* C15 100N AGND C11 100N CLK SCL PL_SCL SDA PL_SDA C7

41、1500P C21 0.47uF R8 33R GND R3 1K +3.3V SCL SDA TX RX R21 4K7 R20 4K7 R19 4K7 R18 4K7 R22 4K7 R23 4K7 1 2 3 4 CN2 +5VD GND R24 4K7 R25 4K7 C4 2u2F L2 YEL LINA 1 VRFILT 2 AVSS 3 AVSS 4 INPA 5 RESET 6 CS1 7 PWR_DN 8 TEST 9 CAP_PLL 10 CLKSEL 11 MCLKO 12 XTALI 13 XTALO 14 SCL 15 SDA 16 DVDD 17 DVSS 18 L

42、RCLK/O 19 SCLK/O 20 IFM/S 21 SDIN1 22 SDIN2 23 SDOUT2 24 SDOUT0 25 SDOUT1 26 ALLPASS 27 GPIO0 28 GPIO1 29 GPIO2 30 GPIO3 31 GPIO4 32 GPIO5 33 NC 34 AVDD 35 NC 36 AOUTR 37 VCOM 38 AOUTL 39 RINA 40 RINB 41 AINRP 42 AINRM 43 VREFP 44 VREFM 45 AINLM 46 AINLP 47 LINB 48 U1 TAS3004 R54K7 +3.3V +3.3V GND G

43、ND AGND AVDD SCL SDA RESET CLK C22 2u2F C10 100N GND C25 2u2F C17 100N AGND C1 2u2F C9 100N AGND C24 2u2F C16 100N AGND C35 1000P AGND R1227K* C34 1000P R1127K* C14 100N AGND C8 100N C6 1500P C20 0.47uF R7 33R GND C3 2u2F U2_SDOUT0 U2_SDOUT0 U1_SDOUT1 U1_SDOUT1 GND U2_SCLK U2_LRCLK R4 4K7 U2_LRCLK U

44、2_SCLK GND R3410K +3.3V R3310K R3210K +3.3V +3.3V PL_SCL PL_SDA R27 0R* R28 0R* LGND +5VL +5VL+5VL PD7 +5VD +5VD+5VD +5VD +5VD +5VD R354K7 R364K7 R374K7 +3.3V R38 56R C51 56P GND DIGAN2.7 No used in this area. Totle 20 components 5 6 7 1234 A B C D 4321 D C B A g 1 f 4 A1 10 e 7 d 6 c 8 A2 5 b 9 a 3

45、 dp 2 IC1 2*7SEGMENT 1 2 3 4 5 CN5 5P2.5 1 2 3 4 5 CN4 5P2.5 8 ? ? ? ? ? ? ? ? ? ? 9 5. Wiring Diagram Bottom layer Top layer Top overlay 6. PCB Layout 10 11 PCB:DIGAN2.30- INPUT Bottom layer Top layer Top overlay 7. TEST PROCEDURE INSTRUMENT 1) AP instrument 2) Dual track oscillograph 3) Computer (

46、WINDOWS 2000) INSTRUMENT SETTING AND CONNECTION 1) Connect AP output with INPUT1 AND INPUT2. Set AP 1kHz, 0dBu, Load 600 UNBAL & BAL. 2) Connect OUTPUT1 and OUTPUT2 with AP input terminal. Connect its monitor signal with oscillograph. Set UNBAL & BAL Load 100K, BW: 22HZ22KHZ Part 1 Functional Switch Test 1. Connect AC9V/300mA voltage adapter to DIGAN 2.I4. When the power switch is in the ON position, LED indicates DIG214. Press POWER button, now it is in the standby mode. It is