Instruction Manual mif 4 Rosendahl mif 4 is a professional midi timecode interface with LED display, sync input and USB port www.rosendahl-studiotechnik.
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Contents 1. Unpacking and mounting into a 19" rack 2. Powering up and selecting timecode SOURCE 3. LTC input mode 4. MTC and USB input modes 5. GEN generator mode 6. DISPLAY modes 7. Firmware update 8. Declaration of conformity 9. Specifications page 3 page 4 page 5 page 6 page 7 page 9 page 11 page 13 page 14 1.
2. Powering up and selecting timecode SOURCE Connect the USB port to a host computer or use the external power adapter to supply your mif 4. Each time the unit is powering up the installed firmware version is shown in the display for two seconds. This manual relates to firmware version 1.0 from December 2010. The left key is used to select the timecode SOURCE.
3. LTC input mode LTC is longitudinal timecode according SMPTE 12M, there are 80 bits containing time, userdata and a syncword. The unit detects the incoming LTC frame format automatically. The FPS LEDs 24, 25, 30 and DF indicate the detected format. 24 FPS timecode is used for movie productions. 25 FPS timecode is the standard European video frame rate but is also common for European audio productions. 30 FPS timecode is used for audio and high definition video productions in Japan and the US.
Timecode faster or slower than 6% or timecode running reverse is translated into so-called MTC full messages. MTC full messages are used to spot a DAW or other MTC controlled software to a specific location, just like a locater. In operation mode SOURCE = LTC a video sync input signal does not influence the LTC to MTC translation process. Synchronisation is always referenced to the LTC Input signal, indicated in CAL DISPLAY mode by "I" ( I 1.0000 ).
If the unit is in sync and outputs locked timecode, this LOCKED indicator will light up. In MTC or USB input modes the LOCKED threshold is < 5ms, in LTC mode < 100µS. If the incoming midi timecode is jumping or drifting away so that mif 4 is unable to follow the source it will display ERROR 01 in MTC mode or ERROR 02 in USB mode. In this case a stop and restart of the timecode synchronisation will be executed. 5.
Applied pull down video syncs (i.e. NTSC = 480i59.97) will change 30 FPS timecode frame rate automatically into pull down 29.97 FPS timecode frame rate. CAL display 0.990 informs about pull down timecode rates. Stop the timecode generator manually by pressing the left key again. The generator userbits can be edited accordingly when display mode is set to UB. The usebit display shows 8 digits separated by decimal points. Each userbit group/digit can be set to hexadezimal values from 0 to F.
6. DISPLAY modes Press the right key to select one of four display modes: TC timecode in hours, minutes, seconds and frames. UB so-called LTC userbits, 8 nibbles shown hex from 0 to F. CAL showing the speed of the timecode output. Display mode CALIBRATION is showing the factor of the current timecode speed used related to nominal speed. Examples: 1.0000 = nominal, 0.9990 = pull down, 1.0001 is + 0.01% (100 ppm).
In GENERATOR mode the following video syncs are accepted as reference, depending on the selected timecode standard: 24 FPS: 1080p23, 1080p24, 576i47, 576i48 25 FPS: 576i50, 720p50, 1080p25, 1080i50, 1080p50 30 FPS and 30 DF: 720p59, 720p60, 480i29, 480i30, 1080p29, 1080p30, 1080i59, 1080i60, 1080p59, 1080p60 REF displays the automatically detected video reference standard applied on the video sync input: 576i47 576i48 576i50 480i59 480i60 "slow PAL", pull down, for movie applications only "slow PAL", f
7. Firmware update The firmware version installed in your mif 4 is displayed for two seconds every time the unit is powering up. To update the firmware you need a PC running Windows XP or later. Please visit www.rosendahl-studiotechnik.com and download the newest mif 4 firmware utility. Connect the unit to a USB port while holding down both keys. This will enter bios update mode indicated by both keys illuminated red and the LED display blanking. Now start the software and select the midi I/O ports.
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8. Declaration of conformity Rosendahl Studiotechnik GmbH Andechser Str. 5 D-86919 Utting a.A.
9. Specifications LTC input: XLR 3-pin female, balanced, pin 1 = GND, 2 = (+), 3 = (-), source 1k ohm, short circuit proof. reads forward, reverse and stationary timecode at 5 to 500% of nominal speed (SMPTE 12M). input level tolerance -30 to +20dBu. LTC output: XLR 3-pin male, balanced, pin 1 = GND, 2 = (+), 3 = (-). outputs nominal forward and stationary timecode (SMPTE 12M). output level adjustable from 0.. +8dBu (5.5Vpp). MIDI input: 5-pin DIN connector, MIDI specification 1.0.
