Kamesan KS 342_operating Manual
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11 KS-342 used as direct outputs from channels 3 and 4). The wiring is: 1 = ground, 2= L+, 3 = L –, 4 = R+, 5 = R–. There is a choice of output levels: –20 dB or – 60 dB, selectable by the switch immediately below this connector. ST OUT This unbalanced 3.5 mm stereo jack output provides another stereo output for feeding unbalanced inputs (on a camera, for example). The level is – 60 dB. SOURCE SELECT switch This allows the choice of whether the MAIN and SUB connectors above output the mixed left and right output busses (MIX), or whether they output the individual channels in pairs (DIRECT OUT). AES/ EBU The KS -342 is capable of outputting the stereo output in AES/EBU format. The sampling frequency is selectable with the rotar y switch beside the XLR -3 outputs at either 44.1K, 48K or 96K (all Hz). The • position represents the off position (no digital signal is output). NOTE When this digital output is enabled, it uses battery power. If you are not using it, make sure that the switch is in the off position, to extend the life of the batteries. DC IN Use this to connect a DC power supply, providing between +10 V and +15 V at no more than 600 mA. Wire the connector as marked on the panel.
12 KS-342 Front panel The front panel is where you will make the majority of the set- tings while you are using the KS -342. ���� ���������� ����������������������� ������ ��������� ��� �������� ��������� � �������������������������� ������� ������������������� �������������� ��� �������������� ������ ������������������������������������������������������������������������������ ������������������������������� �������������� �������� �������� ������������ �������� ������������ �������� ����������� ������ ���������� ������ �������������� ����������� ������������� ����������� ������������ �������������� ������ ������ ���������� ������������������� �������� ������������ ������ ������ ����������� ��������� ����� ��������� ������������������� ���������� �������������� Channel routing switch (x 4) Each channel has a switch that allows the channel’s output to be routed to either the left (L), right (R) or both (C) output busses. In addition, channels 1 and 2 have another setting: MS, which allows these channels to be operated in MS mode (with a stereo microphone, for example). Both the 1 and 2 channels must be set to MS, and various other features of the mixer also change. These are detailed in the section later referring to the MS mode. LCF/ PFL switch (x 4) Use this control to sweep the low- cut fil- ter frequency (–12dB/octave) between 20 Hz and 200Hz. Though there is no way to turn this filter off, in practice, setting the cutoff frequency to 20 Hz has the same effect as turning it off, as most microphone systems are not sensitive to sounds in that frequency range. Press this control (it is non - latching) to perform a pre - fade lis- ten (PFL) on the channel (the level is shown on the right meter). More than one of these PFL controls can be pressed at the same
13 KS-342 time, but in this case, the level and right VU meter indication will be lower than the actual values. Channel faders The nominal position is at about the 2 o’clock position, when the fader is pointing to the channel number. NOTE In MS mode, faders 1 and 2 have a slightly different meaning, as explained in the appropriate section. Slate microphone This built- in microphone allows the opera- tor to make comments, or clapperboard, etc. signals to be add- ed to the main mix. Input selector (x 4) Use this to select between the following: P48 Condenser microphones requiring +48V phantom power- ing Dy - M Dynamic microphones LINE Line - level sources A - B - A - B type microphones NOTE Ensure that only microphones corresponding to the selection are connected to the appropriate inputs, otherwise damage may occur to the KS-6001 and to the microphones. Input trim control (x 4) Used to adjust the level of the signal fed to each channel. The amount of trim depends on the input setting: the blue figures indicate line - level settings, and the white figures indicate microphone levels. Fader link (FD LINK) switch (x 2) When these switches are on (pushed to the right position), the even - numbered faders control the levels of the two linked channels (not in MS mode). Battery check button When the unit is turned on, pressing this momentar y non - latching button allows you to check the batter y health using the left meter. The further the meter is de- flected, the more life there is in the batteries. Meter light/Oscillator switch This switch serves two func- tions. In its up position, the meters are illuminated. In the down position, the built-in 1 kHz line-up oscillator is acti- vated (together with the meter light). In order to see the output level using the oscillator: 1. Make sure that both the OUTPUT level switches are set to the correct value (usually +4).
14 KS-342 2. Turn the power on (up), and then turn the oscillator switch on (down). 3. To monitor both channels together, set the monitoring selection switch to the L/R setting (for an explanation of the monitoring switch settings). 4. Adjust the level of the outputs so that the meter reads 0 dB (or the equivalent, depending on the meter. 5. Remember to turn the oscillator off when the adjustment has been made. The center position is off. Master level controls Adjust the output level with these con- trols. These are recessed to avoid accidental changes to the output level in normal operation. Monitor selection, level and headphone jack Select the signals monitored through the headphones using the monitor selection control. AUX selects the auxiliar y signals, L selects the left, and R selects the right output bus, L / R is stereo and L+R is a mono combination of the left and right busses. Note that these assignments change in MS mode, as explained below. Use the level control to set the monitoring level as heard through the headphones, plugged into the standard 1⁄4" stereo jack. Power switch and indicator Turn the unit on by pushing the switch up. The indicator lights green when the internal batteries are used, and orange when an external power supply is used. It flashes when the batter y level becomes low. When it flashes, you should replace the batteries. COMP indicator Lights when the compressor is in operation, as switched from the side panel. NOTE The compressors use battery power. Turn the compressors off when you do not need them to extend the life of your batteries. SLATE button Push to activate the slate function with the in- ternal microphone. Meters There are three different types of meter available with the KS -342. These are factor y - fitted and are not user- replace- able, depending on the model of your KS -342, you may have one of the following types of meter fitted:
15 KS-342 VU scale These meters conform to the VU standard, providing an averaged level reading. 0 VU marks the reference position. BBC scale Developed by the British Broadcasting Corporation, this peak meter standard goes from 1 to 7 (each step repre- sents 4 dB) with a fast rise and slow fall time. The reference level is “6”. Nordic scale Another peak meter type, with 0 again being the reference level, but the readings are from – 42 to +12 dBu. In each case, a peak LED is provided as part of the metering system, which lights at 6 dB below maximum level. MS operation MS operation is usually carried out using a specialized micro- phone designed for this kind of recording. To use the MS facility with channels 1 and 2, make sure that both channels 1 and 2 have their output destination selected as MS. Note that the dedicated XLR - 5 connector can be used with ap- propriately - wired microphones in this mode. It provides phan- tom power, etc. in exactly the same way as the XLR -3 connec- tors, and the line selector switches, etc. should be set appro- priately. The AUX inputs cannot be used for cascading in this mode. The fader for channel 1 becomes the width control for the MS signal, and the fader for channel 2 is the level control. The fader gang switch (1-2) obviously cannot gang the faders in MS mode—instead, it inverts the phase of the signal fed to channel 2. When monitoring, the L+R mode takes a new meaning, with the decoded left and right signals being decoded. AES/EBU output The AES/EBU jack provides digital output in AES/EBU format, at the selectable sampling frequencies of 44.1, 48 or 96 kHz. The resolution is 20 bits.
16 KS-342 Expansion The KS -342 may be used together with the KS - 6001 sub mixer, which provides a further four channels of input feeding the AUX bus, and/or the KS - 6002 compressor/EQ module, which pro- vides sweepable 2 - band EQ and compression facilities for each channel. The KS -342 can act as the power source for these units, which integrate neatly with the built- in connector on the top panel of the unit. These modular connectors allow you to build up a portable Kamesan system in a similar way to a child’s building block set, without the need for other connectors or cables, as all audio signals and power are carried by these built- in connectors. There is no need to make any switch assignments on any of the units—for example, when the KS - 6002 is connected, the compressors and EQ circuits are automatically inserted into the channels, etc. You should note that since these expansion units do not have their own power supplies, there will be an additional drain on the KS -342 batteries, and the batter y life will be shortened. Attaching and detaching units When attaching units to the KS -342, you should remove the rectangular connector cover on the top panel, keeping it and the screws in a safe place before fitting the other unit, so that its male connector on the bottom plate mates with the female connector on the top of the KS 342. The locating pins situated on the bottom of the other unit should match the locating holes on the top panel of the KS -342. To detach a sub - unit from the KS -342, move both locking le- vers on the top center sides of the KS -342 forwards and lift. See the documentation supplied with the KS - 6001 and KS - 6002 for full details regarding the fitting and the use of these units.
17 KS-342 Specifications Audio specifications Input levels (all continuously variable and electronically balanced) MIC–70 to –30 dBs LINE–20 to +4 dBm AUX–20 to +4 dBm Input impedanceMIC3.0 kΩ LINE600 Ω AUX10 kΩ Headroom32 dB (pre -fader input) Analog output levelsMAIN+4/ 0 / –20 / – 60 dBm switchable (600Ω load) transformer balanced XLR -3 type SUB–20 / – 60 dBm switchable (600Ω load) electronically balanced XLR -5 type UNBAL– 60 dBs (10 kΩ load) 3.5 mm unbalanced stereo jack MONI0 dBs /50Ω (max load 8 Ω) Maximum output levelsMAIN+24 dBm (600Ω load, +4 selected @ 12 V) +20 dBm (600Ω load, +4 selected @ 8 V) SUB– +8 dBm (600Ω load, –20 selected @12V) UNBAL– 60 dBs (10 kΩ load) @ 12 V MONI+6 dBs (50 Ω load, @ 12 V) Digital outputAES/ EBU format, XLR -3 type connector. FS: 44.1/48/ 96 (selectable), resolution, 20 bits
18 KS-342 Other parameters Microphone powerP- 48V (maximum power 10 mA) A - B 12V (maximum power 30 mA) LCF (low - cut filter)20 Hz — 200 Hz, continuously variable, –12 dB / octave Oscillator1 kHz (±10%) CompressorThreshold level+3/+6 /+9 /+12 dB Attack time2 ms (approx) Release time300 ms (approx) Ratio2:1 (approx) Audio performance Frequency responseMAIN OUT &SUB OUT30 Hz — 40 kHz (within 1 dB) Noise levelMIC (–70)< –54 dB (22 kHz LPF/ RMS) LINE (+4)< –70 dB (22 kHz LPF/ RMS) MONI< – 65 dB (22 kHz LPF/ RMS) Total Harmonic Distortion (THD)
19 KS-342 Power and general specifications Internal power supply8 x type 3 (AA) dry - cell batteries, carried in standard battery holder 1 x NP-1 NiCd battery, carried in optional battery holder External power supply+10 V to +15 V (maximum current 0.5 A) CurrentNominal160 mA Digital output on240 mA Battery life (normal temperature, no additional modules, digital output off) Manganese cells> 4 hours Alkaline cells> 8 hours NP-1 NiCd> 12 hours Dimensions (excl. protrusions) w x d x h215 x 170 x 60 (mm) 8.5 x 6.7 x 2.4 (in) Weight (approx)inc. batteries2.4 kg (5.3lbs) excl. batteries2.0 kg (4.4lbs)
20 KS-342 Block diagram ������������� ����������� ������������� ����������� ������������� ����������� ������������� ����������� � �������������� ���� ���� ���� ���� � � � � � � �� �� � � � � �� � � � ��������������������������������� � ����������������� ���������������� � ����� �������� ��������������� ������ ����������������������� ����� �������������� ������������� ������������� ���������������������� ������������ ������������ ������������ ����������� ���������� � ���������� ����������� ���������� ���������� ���������� ������� ���������� ������ ���� ���������� ���������� ��������� ��������� ��������� ��������� ������� ��������� ��������� ��������� ��������� ��������� ��������� ��������� ����������� ���������� ����������� �� � ������� ������� � �������� �������� ������� ��������� ������� ������� ������� ������� ������� ������� ������� ������ � ������� ������� ������� ������� ������ ������ ������ ������ ������ ������ ������ ����� ����� ����� ����� ����� ����� ����� ����� ��������� � ����� ����� ����� ����� ����� ����� ���� ���� ���� ���� ���� ���� ���� ���� ���� ���� ���� ���� ���� ���� ���� ���� ���� ���� ���� �������� ��� ��� ���������� ������ ��� ��� ��� ��� ��� ��� ��� ��� ��� ��� ��� ��������� �� �� ��� ��� ��� ��� ��� ��� ��� ��� � ��� ��� ��� ����� � ��� ��� ��� �� � ��� ��� ��� � � �� � � � � � � � � � � �� � � � � �� �� �� ��� � �� �� �� �� �� � � �� ��� � �� �� ���� � � � �� � � � � � � � ���� ������ ��� ��� ��� � � � � �� �������� ��������� ������� ��� � ������� ��� �������������������� ������� �� �� ��� ��� ��� � �������������� � ���������� ���������� ���������� ���������� ���������� ������� ���������� � ���� � ��������� ��������� ������ ������ �� ��� ���� � ����� �� �