Rosendahl nanoclocks GL Instruction Manual Download Page 9

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Switching from INPUT A to INPUT B does not produce deviations on 
the synchronised audio clocks, stable operation will be obtained. 
 
All  lock  and  relock  procedures  are  operated  very  smoothly  to 
guarantee continuous audio clock output signals during all stages: 
lock, hold, relock. 
 
If the video frame rate is a multiple of the sample rate, it is possible 
to lock the audio phase to video syncs. 
Then the rising edge of the word clock signal will be phase locked to 
the start of video line 1. 
 
Several  nanoclocks  GL  units  locked  to  the  same  video  house  sync 
will produce phase locked audio clocks. 
 
 
 
REFERENCE = AUDIO 
 
Press  the  AUDIO  button  to  configure  nanoclocks  GL  for  audio 
genlocked operation. 
 
Both reference inputs  A and B accept  word clock as well as AES11 
reference clock signals. 
 
If no valid  audio clock signal  is present the according INPUT button 
is blinking. 
 
Audio reference signals with 
 
44.056, 44.100, 47.952, 48.000, 88.112, 88.200, 95.904, 96.000 kHz 
 
are detected automatically and the output sample rate will be set up 
accordingly. 
 

Summary of Contents for nanoclocks GL

Page 1: ...anoclocks GL nanoclocks GL is a digital audio genlock masterclock with 12 word clock AES11 DARS outputs and 2 reference inputs for SD video syncs HD tri level syncs AES11 or word clock signals www rosendahl studiotechnik com ...

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Page 3: ...age 4 2 Connection to Power Supply page 5 3 Installation Connection Status page 6 4 System Settings page 7 5 Reference page 8 6 Sample Rate page 11 7 Output Mode page 11 8 Setup Utility page 12 9 Declaration of Conformity page 13 10 Specifications page 14 ...

Page 4: ... cable 2 pcs 1U rack mount brackets mounted 1 pcs user manual that you are now reading The unit is shipped with four small plastic feet mounted underside with Philips screws If you want to rack mount your nanoclocks GL please detach the four plastic feet For desktop use please detach the rack mount brackets using a metrical hex wrench ...

Page 5: ...oclocks GL can also be powered by a 12 volt DC supply using the 4 pin XLR connector pin 1 is Ground and pin 4 is Vcc 12V The power button lights up green when the unit is powered by mains and changes to red when the power source is DC If the DC supply drops below 10 6 Volts the red power LED starts blinking Primary power source is always mains Feed mains and DC supply simultaneously to power the u...

Page 6: ...ble of some kilometers Even a 50m cable will work without loss of quality within a facility with proper grounding More important than the cable length are equal ground potentials at the source and the receiver Similarly to analogue audio signals producing hum affected by different ground potentials digital transmission lines can be worsened modulated by ground loops Good studio grounding is essent...

Page 7: ...gs Each of the three system buttons SETUP SAVE and on off must be pressed and hold for three seconds to enter setup mode save the current settings or to enter power down mode If you press these buttons shortly or unwittingly there will be no action In SAVE mode you can still use STATUS or MODE buttons to select the desired display mode For all other settings you must enter SETUP mode first Press a...

Page 8: ... syncs as well as HD tri level sync signals 1080p 1080i 720p Frame rates 23 98 24 25 29 97 30 59 94 and 60 fps are detected automatically and the INPUT buttons light up continuously when a valid sync signal is present When no valid sync signal applies the INPUT buttons start blinking Nanoclocks GL will synchronise its audio clocks as soon as a valid video input signal is detected and the sample ra...

Page 9: ... the word clock signal will be phase locked to the start of video line 1 Several nanoclocks GL units locked to the same video house sync will produce phase locked audio clocks REFERENCE AUDIO Press the AUDIO button to configure nanoclocks GL for audio genlocked operation Both reference inputs A and B accept word clock as well as AES11 reference clock signals If no valid audio clock signal is prese...

Page 10: ...e performed When a word clock signal is detected all outputs will be switched to word clock output mode when an AES11 signal is found all outputs will be switched to AES output mode In distribution amplifier mode it is not possible to configure change the output mode manually The sample rate buttons are set to inactive but still serve to display the sample rate detected on the active INPUT VARI di...

Page 11: ...nce or sample rate When stable LOCK is achieved the sample rate buttons light up continuously 7 Output Mode Enter SETUP and press the MODE button to change the output mode of outputs 1 12 By pressing buttons 1 12 you can select output modes green WORD CLOCK red AES11 DARS digital audio refrence signal off USER in firmware version 1 output muted with the nanoclocksGL setup software you can configur...

Page 12: ...etup software and select the midi I O ports In Windows XP you must select the USB audio device Vista or Windows 7 will list NanoclocksGL Press the Update firmware buttom to start the update process Do not disconnect the unit during firmware programming nanoclocksGL is a so called device class compliant USB Audio Device and does not need a driver installation Windows XP or later as well as Mac OS X...

Page 13: ...peration of adjoining appliances No unpermitted interference signals High resistance to electro smog This marking shown on the product or its literature indicates that it should not be disposed with other household wastes at the end of its working life To prevent possible harm to the environment or human health from uncontrolled waste disposal please separate this from other types of wastes and re...

Page 14: ... Word Clock 3 5 Vpp 75 ohms AES11 DARS 1 0 Vpp 75 ohms high level mode 1 5 Vpp clock jitter 10 ps RMS within the audio spectrum 20Hz 20kHz Oscillators 12 288 MHz VCXO 1 48 kHz 96 kHz and multiple 11 2896 MHz VCXO 2 44 1 kHz 88 2 kHz and multiple 16 369 MHz GPS TCXO internal timebase better 0 2 ppm 1 8 GHz PLL for 0 1 pull down rate generation USB USB type B device class compliant MIDI USB audio pl...

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