2011_Test_Spec 电路图.pdf

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1、. INDIGO 2011 EO TEST SPEC TEST SPECIFICATION: TL Audio - - Issue 1: 11th March 1996. - . - - - Tolerance on inputs +/-O.3dB. outputs +/-ldB. unless stated otherwise. Tests must be perforDIed in lequeace. with coDtroll chuged only as jDdicated. I. MAINS VOLTAGE: Set to 1.3OV . 2. GROUND CONTINUrrY:

2、Li.it 0.01 Dbms. 2.1 Measure the resistance between the ground pin of the IEC inlet to the chassis ground screw. 3. VISUAL INSPEcrlON: the uni. paying paltiaJM attention to the foUmng: 3.1 - the orientation of IXwer ty diodes aDd capacitors, 3.2 - the orientation of ICs, 3.3 - all mains wiring, 3.4

3、. chd the solder si of the PCB for unsoldcrcdjoints and solder splashes. 3.S - the quality of extcmaI t and silk screening, 3.6 - chcck all knotIS aM switches Ie and are uniformly spa(;e(j from the tnnel, 3.7 - all XLR connectors are locked, 3.8 . LED alignment with front el, 3.9 . check a1J screws

4、are fully tightened ) 4. SWITCH ON. aDd check for any sign of colnlXDent stress or over-beating. 4.1 LED CHECK: Check the POWER and EQ IN LEDs illuminale. A b RadioFans.CN 收音机爱 好者资料库 . . . . Perfonn tells 5.1 to 5.12 for both banDd5: 5. INPUTS: .1 LINE INPUT: Output OdBu. Equaiiser: XLR lnt, Gain 0d

5、B. XLR O/P, EQ out, Dual 2 Band mok:. A2: 1KHz, Sine, 0dBu, 22-22k Filta, Meter. Adjust RV3 (Ch A) /RV4 (Ch B) on PCI33 for OdBu OUtIXIt. Adjust RVl and RV4 on PCI33 for A and B balance Iy. 5.2 INPUT GAIN: A2: -20dBu. Equaliser: Check int gain variation +/-20dB. Return A2 level to OdBu. 5.3 EQUALISE

6、R IN: Output OdBu. Adjust RVI (channel A) and RV2 (chanDel B) on PCl37. 5.4 BUM AND NOISE: Umit .8OdBu. A2: Mute . Equaliser: CutlBoost oontrols cenlered. 5.5 AUXJNPUT,LOGAIN: o.tpat-14dBL A2: -20dBu. Equaliser: IDplt to Aux Jack, Gain 0dB, Lo Gain. 5.6 AUX INPUT, HI GAIN: Output +JdBu. Equaliser: H

7、i Gain- 5. 7 UNBALANCED INPUT AND OUTPUT: Output -20dBu. Equaiiser: lnt to unlDlancedjack, oulplt from unOO1anjack RadioFans.CN 收音机爱 好者资料库 . . . . 5.8 PEAK LED: A2: OdBu. Equaliser: Dplt and outt via XLR. Adjust the input gain, chC(:kung that the PEAK LED resins to glow u output, and is fully iUwnin

8、ated + l6dBu OUlplt. 5.9 FREQUENCY PONSE: tOHz-40KHz -+ii, -ldB. A2: 22Hz-22KHz fdtcr off. Sweep. 5.tO EQ RESPONE: A2: ALT waveform. For h 00nd, check flat at each switched frequency. and st/cut res:X)Dse. Return all txJOst/cut controls to ;entre. .12. DISTORTION: Umit 0.20/. A2: 22-22K Filter - nID. 6. SOAK TEST. With top and oottom covers fiued 7. QA CHECK. . RadioFans.CN 收音机爱 好者资料库