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Summary of Contents for Marenius MM-4220 T/C
- Page 1 Stereo Audio Mixer MM-4220 T/C | Manual | Version 1.03 T/C 6/18/2009 www.marenius.se...
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Page 2: Table Of Contents
3.1 A UDIO IXER 3.2 A UDIO ECORDER 3.2.1 16 / 24 bits mode selection 3.2.2 Checking recording buffer state 3.3 S ETTING THE INTERNAL CLOCK 3.4 T IME CODE SYNCHRONIZATION 3.5 P OWER UPPLY 4. TECHNICAL SPECIFICATIONS 6/18/2009 www.marenius.se... -
Page 3: General Description
LTC time code jam input A highly accurate crystal oscillator The MM-4220 is a true professional stereo Mixer for portable use, made by MARENIUS. It offers four mic/line input channels, built-in Compact Flash card recorder, PPM metering with 2 x 8 multicolored LED’s, low-noise amplifiers and power supply based on re-chargeable NiMH cells for up to 8 hours use. -
Page 4: Connections
2. Connections 2.1 Power supply The 2.1 mm power jack on the back of the unit accepts a clean DC voltage for powering and/or charging. The polarity can be switched without damaging the mixer. Input voltage: 18 VDC Minimum input current: 1000 mA ! Caution: Voltages above the recommended supply voltage can damage the device. -
Page 5: Phones Output
For an unbalanced line level output signal connect in accordance with table 2.4. Table 2.4 Unbalanced analog audio output Connector type XLR Male Ground Pin 1 Signal Pin 2 Do not connect! Pin 3 2.4 Phones output The headphones output is a 3.5 mm 3-pole socket for standard headphones with an impedance equal to 32 - 2000 ohms. -
Page 6: Usb Socket
This cable uses pin 4 for LTC signal and pin 5 for GND. The LTC signal level should be approx. 1 V for proper jamming. The USB socket may also be used for software updates. Instructions for use are included with the update, when available. Check for updates frequently at http://www.marenius.se. 6/18/2009... -
Page 7: User Instructions
3. User instructions 3.1 Audio Mixer The audio mixer functions are very straight-forward. Connect desired number of microphones and/or line level input signals to the XLR sockets INPUT1 - 4 on the back panel. If required, connect the output signal from the XLR sockets OUTPUT LEFT and RIGHT. ... -
Page 8: Audio Recorder
3.2 Audio Recorder The Compact Flash Recorder is located close to the left edge of the front panel. Before use a formatted CF card is required. Uses a suitable CF card adapter connected to a PC (or Mac) and format the card according to the FAT32 standard. Any other formats will be useless in MM-4220. -
Page 9: Checking Recording Buffer State
3.2.2 Checking recording buffer state The recording buffer is an on-board memory that holds enough samples for compensating for the periodically slower CF card. With some CF cards and, in particular, in 24 bits mode there may be risqué for buffer overrun. To see the buffer status, press both keys >>... -
Page 10: Time Code Synchronization (Jam)
3.4 Time code synchronization (jam) The internal clock is driven by a highly accurate clock oscillator. It is possible to synchronize the clock with an external LTC time code signal. Note that only hh:mm:ss:ff will be synchronized, yy:mm:dd (year/month/date) will not be affected. -
Page 11: Technical Specifications
4. Technical specifications MM-4220 T/C Frequency range 25 Hz - 22 kHz (-3 dB) <0,004% @ 1 kHz, +12 dBu output level Max. gain 72 dB (48+12+12) Signal-to-noise ratio >94 dB@0 dB gain, A-weight Crosstalk at full pan <-50 dB Equiv.
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