Funk Tonstudiotechnik SAM-1C Operating Manual
  1. Manuals
  2. Brands
  3. Funk Tonstudiotechnik Manuals
  4. Amplifier
  5. SAM-1C
  6. Operating manual

Funk Tonstudiotechnik SAM-1C Operating Manual

Balancing, distribution and matching amplifier
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
OPERATING MANUAL
BALANCING, DISTRIBUTION AND MATCHING AMPLIFIER

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the SAM-1C and is the answer not in the manual?

Questions and answers

Related Manuals for Funk Tonstudiotechnik SAM-1C

Summary of Contents for Funk Tonstudiotechnik SAM-1C

  • Page 1 OPERATING MANUAL BALANCING, DISTRIBUTION AND MATCHING AMPLIFIER...

  • Page 2: Table Of Contents

    CONTENTS _______________________________________________________________________________________ CONTENT INFORMATION page FOR YOUR SPECIAL ATTENTION page INTRODUCTION page 4..5 SIGNAL PATH AMPLIFIER MODULES page CONFIGURATION KEY page CONFIGURATION EXAMPLES page 8..12 HUM LOOPS page BLOCK DIAGRAM INPUT/OUTPUT MODULES page AMPLIFIER MODULES SSOM-04Mc / SSIM-04Mc page 15..16 AUDIO SIGNAL QUALITY page 17 18...

  • Page 3: For Your Special Attention

    FOR YOUR SPECIAL ATTENTION ______________________________________________________________________________________ These operating instructions apply in principle to all versions of the SAM-1C, as long as no differences are pointed out. ATTENTION : Mains connection only to AC voltage 90..260 Volt/50 - 60 Hz ! To avoid fire and electric shock, do not expose the unit to rain or moisture!
  • Page 4 Auto-Mute : The outputs of the amplifiers in the SAM-1C have a "power-down" mute relay in the output. This ensures a largely crack-free switching on and off of the unit even after a sudden drop or failure of the supply voltage.
  • Page 5 (see also chapter AUDIO SIGNAL QUALITY). The SAM-1C can also be used for matching time code signals due to its exceptional bandwidth of over 200 kHz. The excellent crosstalk attenuation of over 125 dB at 1 kHz and 120 dB at 10 kHz between the two channels also allows the use of both signal paths for different mono signal sources simultaneously.

  • Page 6: Signal Path Amplifier Modules

    Jumpers 8..11 allow summation or distribution of the input signals within the module. Circuit zero and chassis are separated from each other in the SAM-1C. Pin 1 of the XLR socket is connected to circuit zero and the ground connection (shown in black in the diagram) of the corresponding RCA socket, the XLR housing is connected to the chassis (protective earth connection green).

  • Page 7: Configuration Key

    _______________________________________________________________________________________________ 2. CONFIGURATIONS : 2.1 Type designation : The SAM-1C is available with 4 or only partially equipped with 2 independent amplifier trains. In the type designation : 1st digit after slash = number of balancing channels, 2nd digit = number of differential channels (de-symmetrizer).

  • Page 8: Configuration Examples

    > 3x Cinch direkt out + 4x sym. out XLR (Distribution amplifier) In principle, up to 4 amplifier channels (2 modules) can be installed in the SAM-1C. Combinations of distribution or summing amplifier configurations and additional individual modules are also possible, depending on the space available.
  • Page 9 SAM-1C CONFIGURATION EXAMPLES _______________________________________________________________________________________________ 2.3.2 2-channel differential amplifier : This version enables the connection of 2 balanced audio signal sources to unbalanced inputs. Two independent amplifier channels are realised by using a differential amplifier module SSIM-04Mc. The gain of each output can be adjusted separately in the range of -20..0 dB, with jumpers J1 and J3 it is also possible to switch on gains of up to 6 dB.
  • Page 10 _____________________________________________________________________________________________ 2.3.5 4-channel distribution and balancing amplifier : The balancing amplifier modules SSOM-04Mc of the SAM-1C can also be configured internally as stereo distribution amplifiers (1 unbalanced RCA input to 2 balanced XLR outputs each). In this case, the input signals are applied in parallel to the involved RCA sockets of one channel, so that the second RCA socket can be used as a loop-through output (see diagram below).
  • Page 11 2.3.9 2-channel matching amplifier fully balanced : The SAM-1C is also available as a 2-channel fully balanced matching amplifier. In this configuration 2 balanced audio signals can be level corrected. In the input amplifiers a level reduction between 0...-21 dB can be set.
  • Page 12 2.3.12 4-channel mono distribution and balancing amplifier : The balancing amplifier modules SSOM-04Mc of the SAM-1C can also be configured internally as mono distribution amplifiers (1 unbalanced RCA input to 4 balanced XLR outputs). In this case, the input signals are applied in parallel to the involved RCA sockets of one channel, so that the second, third and fourth RCA sockets can be used as loop-through outputs ("BUS-OUT"...

  • Page 13: Hum Loops

    If now the output of the transmitting device is modulated with an audio signal of 1 V, there will be a difference of 1 V at the balanced input of the SAM-1C as well. Consequently this audio signal will also be present at the output of the SAM-1C, but freed from the ripple voltage.

  • Page 14: Block Diagram Input/Output Modules

    BLOCK DIAGRAM AMPLIFIER MODULES SAM-1C ______________________________________________________________________________________________ Block diagram Audio 2-channel module SSIM-04Mc balanced XLR inputs to unbalanced RCA outputs Block diagram Audio 2-channel module SSOM-04Mc unbalanced RCA inputs to balanced XLR outputs...
  • Page 15 AMPLIFIER MODULE CONFIGURATION SAM-1C _______________________________________________________________________________________________ DIFFERENTIAL AMPLIFIER SSIM-04Mc Function of the trimmers and jumpers : Pin assignment : additional gain +6 dB left channel Pin 1 Ground additional gain +6 dB right channel Pin 2 Output left channel unbalanced Gain left channel fixed 0 dB...
  • Page 16 Inputs directly linked (J6 A+B closed, J7 open) Pin 5 Ground Ground to input bridge (J7 closed) Pin 6 Input right channel asymmetrical close when used outside SAM-1C (Mute-Relais) Pin 7 NC 8 (Not connected) close when used outside SAM-1C (Mute-Relais) Pin 8 Power supply...

  • Page 17: Audio Signal Quality

    ________________________________________________________________________________________________ 4. AMPLIFIER PATHWAYS : The SAM-1C is equipped with very broadband amplifier trains that ensure an exceptional, very phase-clean signal transmission. This is impressively proven by the following measurement reports. The balancing amplifier module SSOM-04Mc, set to 0 dB gain (input signal level = output signal level), was driven by square wave signals from a fast pulse generator.
  • Page 18 SSOM-04Mc. The measurement was performed with a signal of 1 kHz, at a set gain of 1 (0 dB) at the SAM-1C (level trimmer at left stop). From -6 dBu to +11 dBu line level the THD values of both channels are below 0.0001%! Even with signals around -60 dB (relative to the overall...

  • Page 19: Level Adjustment

    If the balanced inputs or outputs of the SAM-1C are used as converters balanced < > asymmetrical, it is often useful to connect the shield to pin 1 and 3 of the XLR connectors. If a hum loop occurs with this connection, the shield is only connected to pin 3.

  • Page 20: Power Supply

    ______________________________________________________________________________________________ 7.2 Power supply unit : The current versions of the SAM-1C are equipped with the "ultra-low-drop" precision power supply SMPS- 12. This modern switching power supply produces extremely stable and pure supply voltages with minimized power consumption and lower heating compared to conventional power supplies. Magnetic interference fields, which can lead to hum in neighboring devices, are reduced by approx.

  • Page 21: Conversions / Module Installation And Removal

    Before doing so, be sure remove power supply cable. The current versions of the SAM-1C with switching power supply are accessed by loosening 95..230V / 5W removing screws loosening 2 additional screws on the front and rear panel. A Philips...
  • Page 22 ___________________________________________________________________________________________________ The following typical measurement results were measured on a SAM-1C series unit equipped with SSOM-04Mc module. Usual load resistance of 10 kΩ at line levels of +6 dBu and 0.0 dB gain, unless otherwise specified. The configuration of the analyzer is indicated in the left block in each case.
  • Page 23 TYPICAL PROPERTIES BALANCING AMPLIFIER SSIM/SSOM-04Mc ___________________________________________________________________________________________________ Crosstalk left channel < > right channel. The graphs on the left show the SSOM-04Mc balancing amplifier module, those on the right the corresponding measurements on the SSIM-04Mc differential amplifier (instrumentation amplifier). Analyzer: R&S UPL Balancing amplifier SSOM-04Mc Difference/Instrument Amplifier SSIM-04Mc above levels of -40 dBu...+24 dBu SSOM-04Mc...
  • Page 24 __________________________________________________________________________________________________ The following typical measurement results were measured on a SAM-1C series unit equipped with SSIM-04Mc module. Usual load resistance of 10 kΩ at line levels of +6 dBu and 0.0 dB gain, unless otherwise stated. The configuration of the analyzer is indicated in the left block.

  • Page 25: Technical Data

    136 dB CCIR unweighted, 139,0 dB A- weighting Output offset voltage : ........< 1 mV Power consumption SAM-1C :......80..265V / 50...400 Hz typ. 4 W , max. 6 W fully loaded, Stand-By: below 0,2 W Protection class :..........

  • Page 26: Notes On Immunity To Interference

    NOTES ON IMMUNITY TO INTERFERENCE ______________________________________________________________________________________________ 10. Interference radiation and immunity The unit complies with the protection requirements in the field of electromagnetic compatibility, which are listed in Directives 89/336/EEC and FCC, Part 15, among others. : The electromagnetic emissions generated by the unit are limited to such an extent that other devices and systems can be operated as intended.

  • Page 27: Maintenance And Repair

    WARTUNG UND REPARATUR _______________________________________________________________________________________________ 11 Safety The unit may only be tampered with by qualified personnel in compliance with the applicable regulations. Before removing parts of the housing, the unit must be switched off and disconnected from the mains. When carrying out maintenance work on the open, live unit, bare circuit parts and metal semiconductor housings must not be touched either directly or with a non-insulated tool.

  • Page 28: Ce Declaration Of Conformity

    Security : Protection class 1, EN60950; 1992 + A1/A2; 1993 EMV : EN55103-1 EN55103-2 Evaluation criterion B electromagnetic environment E4 Berlin, 3.09.2020 Th. Funk, Owner FUNK TONSTUDIOTECHNIK D-10318 BERLIN Blockdammweg 39..59 (0049) 030 6115123 FAX: 030 6123449 INFOS: www.funk-tonstudiotechnik.de E-MAIL: funk@funk-tonstudiotechnik.de...

Table of Contents