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Ashly VCM-88E manual

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Table of contents for the manual

  • Page 1

    ASHLY AUDIO INC. 847 Holt Road Webster, NY 14580-9103 Phone: (585) 872-0010 Toll-Free: (800) 828-6308 Fax: (585) 872-0739 www.ashly.com VCM-88 VCM-88E Eight Channel Matrixing Level Controllers RD-8 Desktop Remote RW-8 Wall Mount Remote Operating Manual Thr Sig 0 -6 -12 -18 -23 +23 +18 +6 +12 dBu 0 -6 -12 -18 -23 +23 +18 +6 +12 dBu 0 -6 -12 -18 -23 [...]

  • Page 2

    Operating Manual - VCM-88, VCM-88E, RD-8, RW-8 Level Contr ollers 2 T able Of Contents 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2 Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [...]

  • Page 3

    3 Operating Manual - VCM-88, VCM-88E, RD-8, RW-8 Level Contr ollers W ARNING: THIS APP AR A TUS MUST BE EARTHED The exclamation point within an eqilateral triangle is intended to alert the user to the presence of important operating and maintenance instructions in the literature accompanying the device. The lightning flash with arrowhead symbol, wi[...]

  • Page 4

    Operating Manual - VCM-88, VCM-88E, RD-8, RW-8 Level Contr ollers 4 1. Introduction One of the many useful circuits to be developed for audio use is the VCA, or voltage controlled amplifier . A VCA circuit allows for accurate, low distortion level con- trol without signal degradations encountered when using mechanical controls or long signal paths.[...]

  • Page 5

    5 Operating Manual - VCM-88, VCM-88E, RD-8, RW-8 Level Contr ollers 5. VCM-88, VCM-88E Featur es 5.1 Signal Pr esent LED Each channel has a green LED to indicate input signal present (app. -20dBu). Since the LED is referenc- ing the audio signal prior to the VCA circuit, the LED will continue flashing even if the channel level is turned down. 5.2 L[...]

  • Page 6

    Operating Manual - VCM-88, VCM-88E, RD-8, RW-8 Level Contr ollers 6 5.7 Master Output and Channel Pass Through The VCM-88(E) can be used as an eight-in/one- out remote level control for personal monitor mixing using the Master Output. Multiple VCM-88(E) units can be daisy chained to produce several unique mixes from the same program source. T o sim[...]

  • Page 7

    7 Operating Manual - VCM-88, VCM-88E, RD-8, RW-8 Level Contr ollers 5.13 Data Protocol Selector (VCM-88E only) These two DIP switches allow selection of four data protocols. The Standard protocol is selected for use with current Ashly , AMX, or Crestron controllers. The Protea Software protocol is selected for use with Ashly's Protea System So[...]

  • Page 8

    Operating Manual - VCM-88, VCM-88E, RD-8, RW-8 Level Contr ollers 8 7. Audio Connections and Cables 7.1 Balanced and Unbalanced Signals Balanced signal connections are preferred in pro audio applications because of their improved immunity to induced hum and noise. A properly shielded and wired balanced input stage on any product will by design reje[...]

  • Page 9

    9 Operating Manual - VCM-88, VCM-88E, RD-8, RW-8 Level Contr ollers tions. The jumper must be placed in the “1” position (see drawing at top of page) for single jack in/out operation. W ith the jumper set to “1”, the input is on the tip and the output is on the ring of the In jack. The Out jack is not used. This convention is compatible wit[...]

  • Page 10

    Operating Manual - VCM-88, VCM-88E, RD-8, RW-8 Level Contr ollers 10 9. Data Connections and Configurations 9.1 Standard Remote Data Control T o connect the RD-8 or R W-8 remote controller, the VCM-88 uses a rear panel female XLR jack, while the VCM-88E uses a three pin euroblock connector . The con- troller data can be sent through one channel of [...]

  • Page 11

    11 Operating Manual - VCM-88, VCM-88E, RD-8, RW-8 Level Contr ollers T o use the VCM-88 with Protea Software, internal data jumpers (see fig. 9.2) must be placed in the RS-232 position on the printed circuit board. On the VCM-88E, the Standard protocol selection is used for Ashly RD-8, R W-8, AMX, and Crestron. T o control the VCM-88E with Protea S[...]

  • Page 12

    Operating Manual - VCM-88, VCM-88E, RD-8, RW-8 Level Contr ollers 12 below). The Slave Data Out from the first unit is connected to the Slave Data In on the next unit, and so on, with the Slave Data Out from the last unit returning to the Slave Data In on the first. A serial RS-232 cable is then connected to the first unit, and the RS-232 switch is[...]

  • Page 13

    13 Operating Manual - VCM-88, VCM-88E, RD-8, RW-8 Level Contr ollers 1 1. W arranty Information W e thank you for expression of confidence in Ashly products. The unit you have just purchased is protected by a limited five year warranty . T o establish the warranty , you must first complete and mail the warranty card attached to your product. Fill o[...]

  • Page 14

    Operating Manual - VCM-88, VCM-88E, RD-8, RW-8 Level Contr ollers 14 13. Dimensional Drawings 0.79 7.94 (202)           emote  e ! el " o $ tro l  all  ount  Control ler 0.38  (20)[...]

  • Page 15

    15 Operating Manual - VCM-88, VCM-88E, RD-8, RW-8 Level Contr ollers + C11 J_3 R35 C_7 R_8 R_7 + C_5 C_6 - + U_1B R_4 - + U6C R65 + C_1 VR2 R70 D20 D23 D22 R12 - + U4A R45 D12 R37 X7 X6 X5 X4 X3 X2 X1 X0 G C B A 4 2 5 1 12 15 14 13 VEE 3 16 8 9 10 11 6 /EN VCC 7 HC4051 U3 - + U_3B R5 - + U_1A R6 R4 Q7 R_9 C_8 R23 R7 C7 R_11 R_19 R_17 18 6 2 5 4 37 [...]

  • Page 16

    Operating Manual - VCM-88, VCM-88E, RD-8, RW-8 Level Contr ollers 16 123456 78 A B C D E 8 7 6 5 4 3 2 1 E D C B A B APPROVED: Dw g # Size Drawn B y Rev. B 10s5320b-1.Sch 10s5320 VCM-88E, 8 Channel Remote VCA / Limiter Dan Szaba Sheet # of 14 847 Holt Road Webster, NY 14580-9103 Phone: Fax: (716) 872-0010 (716) 872-0739 Print Date 6-Jan-2004 11:31:[...]

  • Page 17

    17 Operating Manual - VCM-88, VCM-88E, RD-8, RW-8 Level Contr ollers 123456 78 A B C D E 8 7 6 5 4 3 2 1 E D C B A B APPROVED: Dw g # Size Drawn B y Rev. B 10s5320b-3.Sch 10s5322 VCM-88E Analo g Channels 1-4 Dan Szaba Sheet # of 34 847 Holt Road Webster, NY 14580-9103 Phone: Fax: (716) 872-0010 (716) 872-0739 Print Date 6-Jan-2004 11:31:58 A->B [...]

  • Page 18

    Operating Manual - VCM-88, VCM-88E, RD-8, RW-8 Level Contr ollers 18 123456 78 A B C D E 8 7 6 5 4 3 2 1 E D C B A B APPROVED: Dw g # Size Drawn B y Rev. B 10s5320b-4.Sch 10s5323 VCM-88E Analo g Channels 5-8 Dan Szaba Sheet # of 44 847 Holt Road Webster, NY 14580-9103 Phone: Fax: (716) 872-0010 (716) 872-0739 Print Date 6-Jan-2004 11:32:28 A->B [...]

  • Page 19

    19 Operating Manual - VCM-88, VCM-88E, RD-8, RW-8 Level Contr ollers 1 2 3 45 A B C D 5 4 3 2 1 D C B A A APPROVED: Dwg # Size Drawn By Date Rev. B 10s5320b-2.Sch 847 Holt Road Webster, NY 14580-9103 6-Jan-2004 10s5321 VCM-88E Daughter Card Dan Szaba Sheet # of 24 Phone: Fax: (716) 872-0010 (716) 872-0739 C 11:31:35 2 3 1 SW4A SW DPDT 5 6 4 SW4B SW[...]

  • Page 20

    Operating Manual - VCM-88, VCM-88E, RD-8, RW-8 Level Contr ollers ASHLY AUDIO INC. 847 Holt Road Webster, NY 14580-9103 Phone: (585) 872-0010 Fax: (585) 872-0739 Toll Free (800) 828-6308 www.ashly.com © 2004 by Ashly Audio Corporation. All rights reserved worldwide. VCM R-3 20 Printed in USA 0204 R32 C16 C15 C14 C13 R43 D13 VR1 SW2 VR9 R10 R51 VR2[...]