5013_Test_Spec 电路图.pdf

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1、- . , . TEST SPECIFICATION: TLAudio IVORY 5013 EQUALISER Ref. Number: TS5013 Issue 1. Page 1 of 4 Tolerance on inputs +/- 0.3 dBu, outputs +/- 1 dBu, unless otherwise stated. Tests must be performed in sequence, witll controls changed as indicated. 1. mSTOR Y SHEET. Each unit must be accomnied by an

2、 INSTRUMENT mSTOR Y SHEET. Ensure the History Sheet has been completed satisfactorily. 2. MAINS VOLTAGE. Check the Mains Switch setting on the rear panel. It must be 230V. 3. EARTH CONTINUITY. Check tile earth connection from the IEC connector to the rear panel. Check the tightness of the Rear Panel

3、 Earth connection. It must be tight. Check that an Earth Symbol has been placed adjacent to the Earth Terminal. 4. VISUAL INSPECTION. Inspect the unit, ying particular attention to the follo,ving: 4.1 PSU Capacitors and Diodes. Value and orientation. 4.2 Intergrated circuits. Type and orientation. 4

4、.3 Transformer Wiring. . Wired as per PCB silk screen. Check insulation of wires. 4.4 Soldered Joints. Check for solder shorts, dry or unsolderedjoints. 4.5 Internal Fuses. Check fuses are seated correctly. Check values as stated on the PCB Silk Screen. 4.6 External Finish. Check front and rear pane

5、l silk screening for legilbility. Check all external surfaces for marks and blemishes. Check that all screw heads are undamaged, check screws are tight. 4.7 Knobs and Switches. Check that Knobs and Switches move freely. Check they are correctly aligned with their legends. Check they are uniformly sp

6、aced from the front panel. 4.8 LED Alignment. Check that all LEDs are equally spaced from the front panel. 5. FIT VALVES Check the valve bases for splayed pins. Perform corrective action as necessary. All valves are ECC83/12AX7 A unless otherwise stated. Plug valve in each socket, ensure valve is a

7、tight fit. Do not wiggle valve in socket 6. SWITCH ON. Check Mains Sitch moves freely. Leave in OFF position. Set DVM to DC Voltage and connect between Ground i. TEST SPECIFICATION: TL Audio IVORY 5013 EQUALISER Ref. Number: TS5013 Issue 1. Page 3 of 4 Tolerance on inputs +/. 0.3 dBu, outputs +/. 1

8、dBu, unless otherwise stated. Tests must be perfOmted in sequence, with controls changed as indicated. 10. INITIAL TESTS. 10.1 SIGNAL BALANCE. Connect input to Channel 2 XLR. 0.0 dBu. Alternately scope pins 2 & 3 of Channel 2 OUTPUT XLR while adjusting RV4. Adjustment is complete when the signals at

9、 pins 2 & 3 are equal. Repeat Test with input to Channell XLR using RV3. Conduct the Tests on Channel I and then repeat all the Tests on Channel 2. Where applicable Channel 2 test references are shown in brackets. 11.0 CALffiRATION. Signal In = 0.0 dBu to Channel 1(2) XLR. Signal Out from Channel 1(

10、2) Output XLR. . Set Analyser Filter to ON. 11.1 LINE INPUT GAIN. Set RVI(2) for 0.0 dBu. INPUT GAIN pot variation = +/- 20 dBu. OUTPUT GAIN pot variation = +/- 20 dBu. 11.2 EQGAIN. SelectEQIN. Check reading is 0.0 dBu +/- 0.25 dBu. 11.3 IWM & NOISE. MUTE the Output of the Si Generator. The output v

11、alue should read -78 dBu or better. I 11.4 INSTRm.:1:ENT INPUT. Si In = -20 dBu to Front Panel Jack Socket.(Singte Pole) - Set INPUT GAIN to mid-position. Check for -7.0 dBu +/- 1.0 dBu. 11.5 UNBAL IN/OUT. Signal In = -20 dButo Rear Panel Unbal Input.(Singte Pole) Signal Out from Rear Panel Unbal Ou

12、tput.(Double Pole) Check for -20 dBu +/- 1.0 dBu. 11.6 DISTORTION Set Signal Into 1kHz. Set Analyser to read THD+N(%). . Set RV34(33) for a value below 0.08%. Note: Allow 3-4 seconds between each adjustment for reading to settle. Return Analyser to read dBu. Re-adjust RVI(2) Gain pots for 0.0 dBu if

13、 necessary. 11.7 NOMINAL GAIN. Set Rear Panel INPUT GAIN switch to IN. Check for a reading of -14 dBu. Set Rear Panel INPUT GAIN switch to OUT. Set Rear Panel OUTPUT GAIN switch to IN. Check for a reading of + 14 dBu. Set Rear Panel OUTPUT GAIN switch to OUT. Revision Histo r From Serial Number: 570

14、001 To Serial Number: RadioFans.CN 收音机爱 好者资料库 - . - TEST SPECIFICATION: TL Audio IVORY 5013 EQUALISER Ref. Nunlber: TS5013 Issue 1. Page 4 of 4 : Tolerance 01 inputs +/- 0.3 dBu. outputs +/- 1 dBu, unless otherv.ise stated. Tests must be pelfOffiled in sequence, witll controls changed as uldicated !

15、 11.8 DRIVE 1 PEAK: LEDs. Set Signal In to +2.0 dBu. Check that DRIVE LED is Off. Set Signal In to +6.0 dBu. Check that DRIVE LED is just ON. Set Signal In to +16 dBu. Check that DRIVE LED is fully ON. Set Signal In to +22 dBu. Check that PEAK LED is ON. Set Signal In to + 18 dBu. Check that PEAK LE

16、D is OFF. Increase Chl(2) OUTPUT GAIN control until PEAK LED comes ON. The reading should be +20 dBu +1- 1.0 dBu. Set Signal In to 0.0 dBu. Set OUTPUT GAIN control so the reading is 0.0 dBu. 12.0 SWEEP TESTS. The tests may be carried out using a sweep Function Generator/Analyser, for each of the frequency settings.(LF/LM/HM/HF min & max Gain/Freq/Q). Or by determining the minimax values at the selected frequency manually: See Manual for typical Sweep examples. : -: , - , Revision Histo From Serial Number: 570001 To Serial Number: