User manual VELLEMAN PCS32

[. . . ] L3: 220µH (red, red, brown) (220H0) Mount the diodes (watch the polarity!) D1: 1N4148 (1N4148) Mount the ic sockets IC1: 16P (16P) Mount the capacitors C1, C2: 2n2 (222) (C2N2) C3: 100nF (104, µ1) (C100N0) C4: 1µF (105) (C1M0) Mount the electrolytic capacitors (watch the polarity!) C5: 4, 7µF (4µ7) (4J7J) Completely against PCB !Mount the transistor T1: BC327 (BC327) T2: BC547 (BC547B) Mount the fuse holder (FUSE/H'LC) F1: Insert a 1A fuse in the fuse holder (FU1) Mount the DC connector J1: type (DJ-005) (SCREW02) Mount the screw connector J2 REMARK: FASTEN THE TWO SCREWS !!!!!!!!!!!!!!!!!!!Mount the 3mm LED (LED3RL) LD1 22 / 04 / 1996 PCS32i Assembly & Calibration Manual 4 4mm Insert the IC Watch the position of the notch!IC1: CA3524 (CA3524) MOUNT C7: 220µF (220J0D) AT SOLDER SIDE ! Connect snap 9V (2x) (red= +) (SNAP9V) 22 / 04 / 1996 PCS32i Assembly & Calibration Manual 5 2) ASSEMBLY OF THE MAIN PCB P7103'3 22 / 04 / 1996 PCS32i Assembly & Calibration Manual 6 Mount the ¼W resistors R1, R2, R42. . . R61: 100R (brown, black, brown, gold) (RA100E0) R29, R30: 100K (brown, black, yellow, gold) (RA100K0) R3, R41: 47R (yellow, violet, black, gold) (RA47E0) R46: 1K (brown, black, red, gold) (RA1K0) R67, R68: 4K7 (yellow, violet, red, gold) (RA4K7) 22 / 04 / 1996 PCS32i Assembly & Calibration Manual 7 Mount the 1% metall film resistors R9, R24: 360R (orange, blue, black, black, brown) (MA360E0) R4, R14: 820R (grey, red, black, black, brown) (MA820E0) R15, R34. . . [. . . ] IC14: 74HC161 MUST BE MOTOROLA OR HARRIS (HC161) IC8: 74HC162 MUST BE MOTOROLA !!!!!!!IC11: 74HC162 IC26, IC27: 74HC244 (HC244) IC16, IC24: 74HC273 (HC273) IC25: 74HC374 (HC374) IC18: 74HC74 (HC74) IC4, IC5: SRAM 8K X 8 (65764, 61C64, 7C185. . . ) (6408) IC15: VK7103A (GAL22V10) (CK7103A) IC22: VK7103B (GAL22V10) (CK7103B) 3) ASSEMBLY OF THE COMPLETE UNIT · Mount the 3 (12 cm) supply wires : +9 . . +12 V (red), GND (black), -6V (yellow) (MOWR + MOWBK + MOWY) · Mount the spacers for the powersupply PCB BUS. 8M 8mm spacer R/TO220 TO220 isolator BUS3FF05 5mm spacer 10mm bolt (BT3010) · Mount the main PCB spacers 22 / 04 / 1996 PCS32i Assembly & Calibration Manual 12 BUS3FF20 BUS. 8M BT30150 · Solder the supply leads on the supply board · Place the powersupply PCB on its spacers and fasten with two 6 mm bolts. (BT30060) · Connect testpoint J9 on the main PCB to the rightmost tab on the supplyboard. (MOWY) 22 / 04 / 1996 PCS32i Assembly & Calibration Manual 13 · Connect two 15 cm wires (yellow) to both tabs close to the led on the supply board. (MOWY) · Mount the ON-OFF indicator 5mm led on the main PCB. Make sure the it is soldered in the right way ( cathode `negative' is the shortest lead ) (LED5RL) · Mount the leads for CH1 (J1) and CH2 (J3). (WOMY) · Use 5cm + 7cm of black cable to connect the ground of the PCB ( J2-J4 ) to potentiometers and to continue. (WOMBK) 22 / 04 / 1996 PCS32i Assembly & Calibration Manual 14 · Mount the rear panel. Fasten the SUB-D connector with its two own bolts. (CKRPCMK2) · Mount the clamp and IC23 voltage regulator 7805 . Be carefull not to damage the regulator, use 10mm bolts, lock washers and nuts. Solder regulator leads AFTER fixation. Nut M3 MR3 Washer RM3K Isolator R/TO220 Volt regulator UA7805 Isolating mica M/TO220 Bend leads Bolt 10mm M3 BT30100 Use two 10 mm bolts, lock washer and nut to connect the clamp to the rear panel. Do not forget to use plenty of silicon compound ! · 2x BT30100 + 2x RM3K + 2x MR3 22 / 04 / 1996 PCS32i Assembly & Calibration Manual 15 Degrease the alu frontpanel with a non-aggresive solvent ( eg alcohol). Make sure it is perfectly centered. (FPCMK2 + FPPCMK2) Cut the excess border from the front sticker · Mount both BNC connectors on the front panel. REMOVE PROTECTIVE FILM FROM SUB CHASSIS IF PRESENT! (CHPCMK2 + BT20100 + BUS05 + MR3 + MR2 + RS-4) 22 / 04 / 1996 PCS32i Assembly & Calibration Manual 16 Preparation of the screening foil: (CKSPCMK2) Isolate the edge of the foil by means of tape, first bendover the foil: Adhesive tape Coductive side Isolated side · Put the screen foil between potentiometer and subchassis . Do not fasten bolt to tight, it will need adjustment later. 22 / 04 / 1996 PCS32i Assembly & Calibration Manual 17 Connect BNC GND (black wire) and signal (yellow wire). · Guide both yellow switch leads trought the center hole and connect to the switch. Isolation, cover both contacts 22 / 04 / 1996 PCS32i Assembly & Calibration Manual 18 Pre Testing Check the following voltages after supplying power supply. All voltages are measured with respect to ground (use test point J11 as ground). · Connect a voltage of 9 - 12VDC/700mA to the DC connector (check the polarity). [. . . ] Set the sinewave generator to 2. 5Vrms output (check with true RMS voltmeter !) Set the switch on the device to the DC position. Adjust RV6 until the true RMS readout is 2. 5Vrms For the 2nd channel: Same procedure as for channel 1, except for this: Set channel 2 ON and channel 1 OFF Adjust RV3 until the true RMS readout is 2. 5Vrms 22 / 04 / 1996 PCS32i Assembly & Calibration Manual 20 Transient response adjustment Set TIME/DIV to 0. 1ms. 2nd channel: Set the VOLTS/DIV switch to 1V Connect the probe to test point J9 Adjust CV1 until the top of the square is as flat as possible. The result must be: TIMER TEST FREQUENCY 32 MHz 16 MHz 8 MHz 3. 2 MHz 1. 6 MHz 800 kHz 320 kHz 160 kHz 80 kHz 32 kHz 16 kHz 8 kHz 3. 2 kHz 1. 6 kHz RESULT ok ok ok ok ok ok ok ok ok ok ok ok ok ok ESC=EXIT 22 / 04 / 1996 PCS32i Assembly & Calibration Manual 26 Testing the input section: · Connect the oscilloscope to the computer with optobox · Apply 1KHz input signal to the scope channel 1 SIGNAL GENARATOR · Turn the oscilloscope on · Start the program PCS32 (new SOFTWARE FOR OPTO BOX!!) · Set scope at 1mS 22 / 04 / 1996 PCS32i Assembly & Calibration Manual 27 Set at 1ms Check different volt/div settings, for correct readout. [. . . ]