Wohler AM-2B Operation And Maintenance Manual Download | Manualshive

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2001 Wohler Technologies, Inc. ALL rights reserved

11

LED DISPLAY BOARD AM-2B

B & B

SYMBOL

NO.

DESCRIPTION PART

NO.

D1,D10 T1-3/4

RED

LED

8-0008

D2-D9,D11-D18

T1-3/4

GREEN

LED

8-0006

J1

30

PIN

HEADER

11-0033

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Summary of Contents for AM-2B

Page 1: ...UCTIONS III MAINTENANCE CALIBRATION IV SPECIFICATIONS V PARTS LIST Panorama DTV 711 Grandview Drive South San Francisco CA 94080 650 589 5676 Fax 650 589 1355 web www panoramadtv com e mail sales pano...

Page 2: ...amplitude is done with average reading true VU meters and peak reading LED meters The VU meters one each for left and right audio meet all electrical and ballistic specifications established by Bell...

Page 3: ...AM 2B This will produce a stationary line on the scope along the IN PHASE vector The phase vector angle displayed is a result of phase and amplitude So only a test tone which has correct phase and equ...

Page 4: ...ges are present at certain points within this product SERVICE MAINTENANCE TO BE PERFORMED BY QUALIFIED SERVICE PERSONNEL ONLY Do not make adjustments or perform any internal service with power on unle...

Page 5: ...djustment with the potentiometers CALIBRATION An audio test set or a test oscillator and an AC voltmeter preferable calibrated in dBm are required to calibrate the AM 2B Set the test oscillator to out...

Page 6: ...and R86 to set the left and right VU meters to 0 VU 5 Set the test oscillator output amplitude equal to the line level which is considered to be the studio clip or distortion level 18 dBm 24 dBm etc A...

Page 7: ...RD R56 Scope astigmatism adjust R62 Left VU meter cal R65 Left LED column cal R66 Scope Y cal R86 Right VU meter cal R89 Right LED column cal R90 Scope X cal R113 21 dB LED adjust left R114 24 dB LED...

Page 8: ...A standard 19 rack space and occupies 2 standard rack units TECHNICAL CH 1 CH 2 3 pin XLR female 50K ohm balanced Pin 1 chassis ground Pin 2 audio high Pin 3 audio low NOTE Inputs can be resistively t...

Page 9: ...3 R67 R70 R75 R91 R94 R99 R11 R16 R107 R135 1 82K 1 4W 6 0131 R13 R40 200 OHM 1 4W 6 0007 R14 R15 R41 R42 6 8K 1 4W 6 0015 R20 R21 R47 R48 12K 5W 6 0017 R22 R49 R55 A O T R23 R50 270 OHM 1 4W 6 0016 R...

Page 10: ...96 R101 22 1K 1 4W 6 0104 R102 R143 R146 R149 R152 R80 R104 180K 1 4W 6 0100 R105 R133 4 22K 1 4W 6 0090 R106 R134 2 21K 1 4W 6 0091 R108 R136 806 OHM 1 4W 6 0132 R110 R138 549 OHM 1 4W 6 0133 R111 R1...

Page 11: ...29 C31 C35 C39 C4 C8 A O T C9 015mF 600V 5 0020 C10 C11 C23 C24 10mF 35V 5 0003 C17 C19 C22 C30 C32 C34 82mF 50V 5 0028 C20 C33 022mF 50V 5 0010 Q1 Q6 Q9 Q14 2N4401 7 0002 Q7 Q8 Q15 Q16 2N3739 7 0005...

Page 12: ...2001 Wohler Technologies Inc ALL rights reserved 11 LED DISPLAY BOARD AM 2B B B SYMBOL NO DESCRIPTION PART NO D1 D10 T1 3 4 RED LED 8 0008 D2 D9 D11 D18 T1 3 4 GREEN LED 8 0006 J1 30 PIN HEADER 11 003...

Page 13: ...s Inc ALL rights reserved 12 HIGH VOLTAGE POWER SUPPLY BOARD AM 2B B B SYMBOL NO DESCRIPTION PART NO R1 150K 1 2W 6 0001 R2 3 3M 1W 6 0002 R3 R5 470K 1 2W 6 0003 R6 68K 1 2W 6 0004 C1 C6 1mF 2000V 5 0...

Page 14: ...OHM POT 6 0124 R3 R4 1000 OHM POT 6 0188 R5 R6 1M POT 6 0041 R7 270K 1 2 W 6 0173 C1 C2 160mF 350V 5 0021 C4 C5 4100mF 25V 5 0022 C3 NOT USED U1 NOT USED U2 MC7812CK 9 0012 U3 MC7912CK 9 0013 Z1 BRID...

Page 15: ...2001 Wohler Technologies Inc ALL rights reserved 14 CHASSIS AM 2B continued B B SYMBOL NO DESCRIPTION PART NO J4 J8 3 PIN MOLEX 11 0007 P4 P8 3 PIN MOLEX 11 0008 S1 POWER SWITCH 14 0003...

Page 16: ...MISCELLANEOUS PARTS AM 2B B B SYMBOL NO DESCRIPTION PART NO DS1 DS2 VU METER LAMPS 13 0004 M1 M2 VU METERS 4 0012 CRT 21 0005 FILTER GRATICULE 19 0020 FS1 FUSE 2 AMP 12 0001 115 220 VAC OPERATION FUS...

Page 17: ...RY ANY COMPANY REPRESENTATIVE MAY GIVE NO FURTHER WARRANTY ORAL OR WRITTEN EXPRESSED OR IMPLIED TO THE BUYER IN THE EVENT INFORMATION CONCERNING SERVICE IS NEEDED CONTACT Wohler Technologies Inc 713 G...

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