SONOSAX SX-S - Manual (Page 6)

262. 6. SX-S EXTENSION MODULE view of the BLOC DIAGRAM (pdf file)
263.
264. The SX-S Extension module is designed to interconnect with SONOSAX SX-S mixers Serial Number 16220 and up. Circuit differences make it impossible or impractical to
install this module in earlier mixers.
265.Introduction
266. The SX-S Extension module is especially designed for the film and broadcasting industries' needs and for any other situation where extensive intercommunication and/or
monitoring features are required.
267.
268.6.1 The Extension module includes:
• Communication with Boom operator over a "private line" with sidetone
• Mono feed with the ability to talk to the agency folk
• Special feed for video assist
• Additional line output for a back up recorder
• Subaudable tone on slate
• Internal or external slate mic
• MS decoding for the mixer's and boom operator's monitor
• Remote roll for Stelladat and Nagra
• Switchable VU or PPM for both channels
• Phase correlation meter
• Nagra 4.2. and IV-S audio in and out connectors
• The extension module connects via a cable to the extension box that carries a wide variety of input and output connectors.
269.6.2 Extension box
270. The extension box carries the following inputs and outputs:
• 1 Left & 1 Right balanced output on standard XLR
• 1 Left & 1 Right balanced input on standard XLR
• Mono balanced output on standard XLR
• Guest Line balanced output (mono-mix including talk - to guestline feature) on standard XLR
• Left and Right Video assist output on unbalanced RCA/Cinch connectors
• 1 - 7-pin Tuchel connector to interface directly to the NAGRA IV-S Stereo inputs
• 1 - 7-pin Tuchel connector to interface directly to the NAGRA IV-S Stereo outputs as well as Stop/Roll functions
• 1 - 7-pin Tuchel connector to interface directly to the NAGRA 4.2. Mono inputs and outputs as well as Stop/Roll functions
• 1 - 9 pin sub-d connector to interface directly to the Stelladat's inputs and outputs as well as Roll/Stop functions (Stelladat must be set for single button record)
271. A Selector switch on the Extension box lets you choose which recorder you are going to work with. Of course, you can always back up your work on a second recorder.
272. A mini-switch lets you choose between Stop and Pause operation of the Stelladat.
273.
274.6.3 The Boom Box
275. The Boom Box connects to the SX-S extension module via a 2-pair cable with 6-pin Neutrik connectors. On the Boom Box is a boom-operator's headphone Jack (6,3mm,
stereo), a standard XLR female plug to connect to a talkback mic, or to the Boom mic if used with Y-splitters on the SX-S end. A button provides the boom operator with
the ability to call the mixer operator. A LED indicates to the boom operator that the tape is rolling.
276.
277.6.4 Metering
278. The two high quality meter movements show the program level's Left and Right channels. The upper meter shows the Left channel and the lower shows the Right
channel. The VU-peakmeter switch selects whether the meter movements are in VU-meter or in peakmeter mode. The mono-stereo switch selects between mono and
stereo operation. In mono mode the upper or left meter functions as a phase correlation meter, while the lower or right meter always indicates the greater of the two
signals L or R. LEDs indicate which channel is greater. The meters can be backlit. A three position switch selects Low, High and Off.
279.
280.6.5 Mixer Operator's Monitor
281. The mixer operator's monitoring headphone amplifier is on the left hand side of the module. A selector switch chooses between the different sound sources: Off, Left,
Right, Mono, Stereo and Auxiliary. A switch selects between normal or MS-decoded monitoring. In MS-mode the M-(left) channel is applied to both L & R channels in
phase and the S-(right) channel is applied in phase to the left channel and out of phase to the right channel. The ratio M to S is fixed (this decoder is only for monitoring
and does not affect the main mix).
282. The phones potentiometer controls the headphone level for the mixer operator. The Mic potentiometer controls the level of the operator's slate microphone. The SX-S
has a built-in slate microphone that is located next to the Stop/Roll switch on the module. An external slate microphone can be connected to the extension module.
Many operators prefer to use a slate microphone on their Headsets, which guarantees them more freedom while working. If you have been using the internal slate
microphone and want to use an external slate microphone, you should ask your dealer for the external slate mic input. An internal jumper, JP-1 (on the operator ext.
Module PCB), lets you select 48 volt phantom power operation on the slate microphone. Sidetone is available on the monitor and is adjustable by means of an internal
trimmer (P-3). Sidetone is either pre mic level or post mic level. (Jumper-4 : pos. 1-2 pre, pos. 2-3 post).
283.
284.6.6 Boom Operator's Monitor
285. The boom operator's monitoring headphone amplifier is on the right hand side of the module. A selector switch chooses between the different sound sources: Off, Left,
Right, Mono, Stereo and Auxiliary. A switch selects between normal or MS-decoded monitoring. In MS-mode the M-(left) channel is applied to both L & R channels in
phase and the S-(right) channel is applied in phase to the left chanel and out of phase to the right channel. The ratio M to S is fixed (this decoder is only for monitoring
and does not affect the main mix).
286. The phones potentiometer controls the headphone level for the boom operator. The Ret potentiometer controls the (Return) level of the boom operator's talkback
microphone. The boom operator's talkback microphone connects to the boom box or, with the necessary Y-cables on the SX-S side, to a microphone transmitter or any
other cable. An internal jumper, JP-1 (on the Boom ext module PCB), lets you select 48 volt phantom power operation for the boom operator's tbk mic. Sidetone is
available on the monitor and is adjustable by the means of an internal trimmer (P-3). Sidetone is either pre mic level or post mic level. (Jumper-4 : pos. 1-2 pre, pos. 2-3
post).
287.
288.6.7 Communication
289. The SX-S Extension Module has comprehensive communication features. The mixer operator can talk to three different destinations and can receive calls from the boom