Studio Technologies StudioComm 780-02 User Manual
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Studio Technologies StudioComm 780-02 User Manual

Central controller and control console
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for Surround
Model 780-02 Central Controller and
Model 790 Control Console
User Guide
Issue 4, December 2020
This User Guide is applicable for systems consisting of:
Model 780-02: serial number M780-02-00151 and later with
software version 1.00 and higher and FPGA version 4.15 and higher;
Model 790: serial number M790-00151 and later with software version 1.00 and higher
© 2020 by Studio Technologies, Inc., all rights reserved
www.studio-tech.com
50392-1220, Issue 4

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Summary of Contents for Studio Technologies StudioComm 780-02

  • Page 1 Model 780-02: serial number M780-02-00151 and later with software version 1.00 and higher and FPGA version 4.15 and higher; Model 790: serial number M790-00151 and later with software version 1.00 and higher © 2020 by Studio Technologies, Inc., all rights reserved www.studio-tech.com 50392-1220, Issue 4...
  • Page 2 This page intentionally left blank.

  • Page 3: Table Of Contents

    Installation ..............8 Configuration ..............15 Operation ..............34 Technical Notes ............40 Specifications ...............44 Appendix A—Connection Pin-Out Charts ..... 46 Appendix B—Sync Input Sources ........ 47 Appendix C—Downmix Formulas ........ 48 Model 780-02/790 User Guide Issue 4, December 2020 Studio Technologies, Inc. Page 3...

  • Page 4: Revision History

    Revised text for error codes Err1, Err2, and Err3; added text for error code Err4. Issue 2, April 2015: • Revised specifications to reflect final audio performance measurements. • Text clarifications. Issue 1, January 2015: • Initial release. Issue 4, December 2020 Model 780-02/790 User Guide Page 4 Studio Technologies, Inc.

  • Page 5: Introduction

    To compensate with processing lowing fingertip selection of all monitoring Model 780-02/790 User Guide Issue 4, December 2020 Studio Technologies, Inc. Page 5...
  • Page 6 Figure 2. Model 780-02 Central Controller Back Panel AC mains To/from Analog Sync Stereo Digital surround (7.1) Models 790 & monitor outputs input input inputs A & B 71 Control Consoles Remote control inputs Issue 4, December 2020 Model 780-02/790 User Guide Page 6 Studio Technologies, Inc.
  • Page 7 The choices are be critical as the LFE channel is typically the two surround inputs and the stereo band-restricted during distribution. input; only one source can be monitored Model 780-02/790 User Guide Issue 4, December 2020 Studio Technologies, Inc. Page 7...

  • Page 8: Installation

    790 Control Console and it will be connect- er system. These mute and solo resources ed to the Model 780-02. AC mains power Issue 4, December 2020 Model 780-02/790 User Guide Page 8 Studio Technologies, Inc.
  • Page 9 25-pin female D- a nominal impedance of 110 ohms and a subminiature connector. The connectors are nominal signal level of 5 Vpp. located on the Model 780-02’s back panel. Model 780-02/790 User Guide Issue 4, December 2020 Studio Technologies, Inc. Page 9...
  • Page 10 XLR, the – terminal to XLR pin 3, and connector use 4-40 threads. This complies the shield terminal to XLR pin 1. with the original design standard for D-sub connectors. Issue 4, December 2020 Model 780-02/790 User Guide Page 10 Studio Technologies, Inc.
  • Page 11 The Model 780-02 Outputs supports both bi-level and tri-level signals at numerous rate combinations, allowing for compatibility with various worldwide video formats. Model 780-02/790 User Guide Issue 4, December 2020 Studio Technologies, Inc. Page 11...
  • Page 12 (“latch”) in 790 units. A cable, approximately 20 feet response to a logic pulse. (6 meters) in length, is included in the ship- Issue 4, December 2020 Model 780-02/790 User Guide Page 12 Studio Technologies, Inc.
  • Page 13 Model when fabricating a cable to be used when 780-02. connecting a Model 780-02 to a Model 790. The differential transmission scheme used Model 780-02/790 User Guide Issue 4, December 2020 Studio Technologies, Inc. Page 13...
  • Page 14 5-15L) on one end and an IEC 320 C13 through a power-up sequence, lighting socket on the other. Units bound for other each of its LEDs in succession. Using its Issue 4, December 2020 Model 780-02/790 User Guide Page 14 Studio Technologies, Inc.

  • Page 15: Configuration

    • Input Delay Settings configuration options be carefully re- viewed. In most cases one or more of the • Monitor Output Channel Level Offsets operating parameters will be revised to Model 780-02/790 User Guide Issue 4, December 2020 Studio Technologies, Inc. Page 15...
  • Page 16 It’s important to highlight onds. At this time any configuration chang- the fact that the device address is the only es will be stored in nonvolatile memory and Issue 4, December 2020 Model 780-02/790 User Guide Page 16 Studio Technologies, Inc.
  • Page 17 Only appropriate. However, if the sync source is after obtaining a full understanding of the being “shared” by multiple inputs then care Model 780-02/790 User Guide Issue 4, December 2020 Studio Technologies, Inc. Page 17...
  • Page 18 The remote mute exited, the monitor outputs will again be- all and remote dim functions must also come active. Confirm that the correct level not be active. Issue 4, December 2020 Model 780-02/790 User Guide Page 18 Studio Technologies, Inc.
  • Page 19 There are four offer an enhanced experience for Studio- dim level values available: 10, 15, 20, and Comm users. 25 dB. The default value is 20 dB. Model 780-02/790 User Guide Issue 4, December 2020 Studio Technologies, Inc. Page 19...
  • Page 20 48 kHz. In the case of input signals with a center channel. sample rate of 48 kHz the delay range is 0 to 340 milliseconds in 1-millisecond steps. Issue 4, December 2020 Model 780-02/790 User Guide Page 20 Studio Technologies, Inc.
  • Page 21 When the disable request has been rec- ognized the LEDs above both buttons will flash rapidly. Release the buttons and they will no longer enable or disable their normal Model 780-02/790 User Guide Issue 4, December 2020 Studio Technologies, Inc. Page 21...
  • Page 22 Model 71. Figure 8. Model 71 Control Console Front and Back Panels Address Dim LED Reference Level LED Figure 9. Model 71 Device Address Chart Issue 4, December 2020 Model 780-02/790 User Guide Page 22 Studio Technologies, Inc.
  • Page 23  Press and hold the configuration button for 2 seconds to enter or exit the configuration mode. These LEDs will light alternately when configuration mode is ac- Model 780-02/790 User Guide Issue 4, December 2020 Studio Technologies, Inc. Page 23...
  • Page 24 Stereo input sample rate converter enabled. Note: The Model 790’s device address is the only parameter stored in the Model 790. All other parameters are stored in the Model 780-02. Issue 4, December 2020 Model 780-02/790 User Guide Page 24 Studio Technologies, Inc.
  • Page 25 80 Hz. Default: Bass management disabled. Bass management low-pass filter slope 24 dB-per-octave. Bass management high-pass filter slope 24 dB-per-octave. Bass management crossover frequency 80 Hz. Model 780-02/790 User Guide Issue 4, December 2020 Studio Technologies, Inc. Page 25...
  • Page 26 Available sample rates are 44.1, 48, 88.2, and 96 kHz. Default: Sync source is L/R of currently selected input. Sync input terminated. Audio-synced-to-video sample rate 48 kHz. Issue 4, December 2020 Model 780-02/790 User Guide Page 26 Studio Technologies, Inc.
  • Page 27 The 5-second button-press delay is a safety feature ensuring that the reference level will not be accidently changed. To permanently store the new value, you must still exit the configuration mode. Model 780-02/790 User Guide Issue 4, December 2020 Studio Technologies, Inc. Page 27...
  • Page 28 SPL, and auto reference level in dB SPL. reference level off. Default: Attenuation display mode selected. 85.0 dB SPL reference level. Auto ref level off disabled. Issue 4, December 2020 Model 780-02/790 User Guide Page 28 Studio Technologies, Inc.
  • Page 29 Press and hold the Dim button to display and select the dim level, remote mute all, and remote dim. Default: 20 dB dim level. Remote mute all enabled. Remote dim enabled. Model 780-02/790 User Guide Issue 4, December 2020 Studio Technologies, Inc. Page 29...
  • Page 30 Press and hold the To Mono button to display and confirm  the LFE downmix level. Default: LFE downmix level full attenuation when To Stereo or To Mono downmix functions active. Issue 4, December 2020 Model 780-02/790 User Guide Page 30 Studio Technologies, Inc.
  • Page 31 48 kHz sampling rate. The value is scaled up or down for other sample rates. Default: Input delay 0 milliseconds for both A and B. Model 780-02/790 User Guide Issue 4, December 2020 Studio Technologies, Inc. Page 31...
  • Page 32 Use the level control to adjust the monitor output level offsets. The range is –12.0 to 12.0 in 0.5-dB steps. Default: 0.0 dB monitor output level offsets. Issue 4, December 2020 Model 780-02/790 User Guide Page 32 Studio Technologies, Inc.
  • Page 33 Model 790 to device address A1. If another connected unit is already configured for address A1, normal system operation will stop. Note: The 5-second button-press delay is a safety feature ensuring that the factory defaults will not be accidently restored. Model 780-02/790 User Guide Issue 4, December 2020 Studio Technologies, Inc. Page 33...

  • Page 34: Operation

    (SL), surround right (SR), and sub- plied timing (sync) reference or the L/R woofer (SUB) monitor output channels. input of the selected input source. The To Stereo downmix function allows Issue 4, December 2020 Model 780-02/790 User Guide Page 34 Studio Technologies, Inc.
  • Page 35 LED will flash. the function is active. The 4-digit display will indicate the reference output level. Model 780-02/790 User Guide Issue 4, December 2020 Studio Technologies, Inc. Page 35...
  • Page 36 Pressing and holding the LFE low- outputs. pass button will cause the current sample rate value to be shown on the 4-digit Issue 4, December 2020 Model 780-02/790 User Guide Page 36 Studio Technologies, Inc.
  • Page 37 (SR), back left (BL), and back will automatically disable the dim function. right (BR). The SUB group consists of only Model 780-02/790 User Guide Issue 4, December 2020 Studio Technologies, Inc. Page 37...
  • Page 38 (Typically, the level value sample rate. The delay time will “scale” would actually be in dBC, the C-weighted depending on the actual sample rate at Issue 4, December 2020 Model 780-02/790 User Guide Page 38 Studio Technologies, Inc.
  • Page 39 Model 790 associated with the mute all whenever normal Model 71 operation is button will flash. If mute all was already taking place. active when the remote mute all function is Model 780-02/790 User Guide Issue 4, December 2020 Studio Technologies, Inc. Page 39...

  • Page 40: Technical Notes

    The followed by a brief display of the active operating characteristics are identical to sample rate. The sample rate will display Issue 4, December 2020 Model 780-02/790 User Guide Page 40 Studio Technologies, Inc.
  • Page 41 5. Displays Model 780-02’s main software 44.1, 48, 88.2, or 96 kHz will return the version system to normal operation. Model 780-02/790 User Guide Issue 4, December 2020 Studio Technologies, Inc. Page 41...
  • Page 42 115.2 kbit/s and uses an 8-N-1 data So in practice what can the SRC function format. The Model 780-02 communicates accomplish? If the Model 780-02’s sample Issue 4, December 2020 Model 780-02/790 User Guide Page 42 Studio Technologies, Inc.
  • Page 43 Model 790 or Model 71 units are again connected. The control consoles will go through their standard power-up sequence and then normal operation will resume. Model 780-02/790 User Guide Issue 4, December 2020 Studio Technologies, Inc. Page 43...

  • Page 44: Specifications

    Mounting: one space (1U) in a standard 19-inch and level control at maximum setting rack Maximum Level: +24 dBu into 2000 (2 k) ohms Weight: 3.6 pounds (1.6 kg) or greater Issue 4, December 2020 Model 780-02/790 User Guide Page 44 Studio Technologies, Inc.
  • Page 45 2.20 inches high (5.6 cm) 4.10 inches deep (10.4 cm) Weight: 0.8 pounds (0.4 kg) Specifications and information contained in this User Guide subject to change without notice. Model 780-02/790 User Guide Issue 4, December 2020 Studio Technologies, Inc. Page 45...

  • Page 46: Appendix A-Connection Pin-Out Charts

    D-subminiature (DE-9F). Connector uses 4-40 threaded inserts for locking with mating plug. Connections between Model 780-02 and Model 790 and Model 71 Connections for Remote Control Inputs Issue 4, December 2020 Model 780-02/790 User Guide Page 46 Studio Technologies, Inc.

  • Page 47: Appendix B-Sync Input Sources

    720p/23.98 Hz 1080p/24 Hz 720p/24 Hz 1080p/25 Hz 720p/25 Hz 1080p/29.97 Hz 720p/29.97 Hz 1080p/30 Hz 720p/30 Hz 1080psf/24 Hz 720p/50 Hz 1080psf/23.98 Hz 720p/59.94 Hz 720p/60 Hz Model 780-02/790 User Guide Issue 4, December 2020 Studio Technologies, Inc. Page 47...

  • Page 48: Appendix C-Downmix Formulas

    L, R, LFE, SL, SR, BL, and BR mute For Stereo Input C = 0.707L + 0.707R L and R mute (LFE, SL, SR, BL, and BR already muted) Issue 4, December 2020 Model 780-02/790 User Guide Page 48 Studio Technologies, Inc.

This manual is also suitable for:

Studiocomm 790

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