User manual EVENTIDE H8000FW

[. . . ] ® ® H8000FW Operating Manual for software version 5. 0 Part No: 141103 Manual Release 1. 1 12 January, 2006 ©2004-2006 Eventide Inc. , One Alsan Way, Little Ferry, NJ, 07643 USA Eventide, and the next step are registered trade marks of Eventide Inc. Harmonizer is a registered trademark of Eventide Inc. for its audio special effects devices incorporating pitch shift. H7600, H8000, H8000A, H8000FW, UltraShifter and Eve/Net are trademarks of Eventide Inc. [. . . ] (H8000FW owners do not need to bother with this ­ Word Clock is always available) Then you can select WORDCLK as the external clock source on the clock menu page in the SETUP area. The picture at the right applies to the H8000 - that of the H8000FW is similar. The rate of the external clock is displayed in the "Sample Rate: xxxxx" field. In the example shown two screens above, the actual frequency of the external signal is 48001Hz. External sampling rates can range from ~30kHz to 53kHz and 61kHz to ~99kHz. See Sampling Rates on page 62 for information on speed modes. The Status of the Digital I/Os When Using the External Clock The picture at the right applies to the H8000 - that of the H8000FW is similar. DIN 1/2 reflects the status of the digital inputs 1/2 (either the AES/EBU 1/2 input jack or the S/P DIF 1/2 input jack depending on IN 1/2 on the [inputs] menu page). DIN 3/4 (and DIN 5-8 on the H8000) reflect the status of the remaining XLR AES/EBU inputs. If you The right-hand side of the clock menu page in the SETUP area displays the status of the digital inputs. intend to use these inputs, you must ensure that these inputs are synchronized to the external clock source, as shown by the OK indication on the right hand side. ADAT reflects the status of the ADAT inputs - you must ensure that the ADAT inputs are synchronized to the external clock source if they are being used. Typically, when using ADAT, your clock source will be either the ADAT signal itself, or a WORDCLOCK to which the ADAT is also synchronized. The H8000FW also shows the status of AES11-18 and FIREWIRE 1-2 ­ the same synchronization requirements apply. The status of the digital inputs will be: slipping DIN 1/2 will read slipping if its sampling frequency changes suddenly or if it is unstable. This means that signals are present, but they are not synchronized with the external clock input. The greater the discrepancy between the external clock and the input, the greater will be the distortion. Slight slipping can be acceptable in noncritical applications, as the occasional clicks it produces are often masked by the source material. Better, however, to enable sample rate conversion where available and be rid of it. OK unlocked the input is synchronized to the external clock source and everything is cool. no signals are present, the signals' sampling rate is changing suddenly, the signals' sampling rate is very unstable, or something is dreadfully wrong with the signals. The sampling rate at the digital outputs will be the same as the sampling rate of the external clock (which is the system sampling rate in external ). A/D and D/A conversion will be done at this rate. Page 66 the H8000FW Operating Manual ©2004-2006 Eventide Inc. Manual Release 1. 1 The H8000FW Operating Manual Understanding the "System Sampling Rate And External Sync Indicator" When Using the External Clock The "System Sampling Rate and External Sync Indicator" is the box of five LEDs immediately to the left of the display. The top four LEDs indicate the status of the system sampling rate: · Solidly lit: When one of the top four LEDs is solidly lit, the system sampling rate is exact (+/- 0. 05%) (the LED corresponding to the system sampling rate will illuminate ). Blinking: When one of the top four LEDs is blinking, the system sampling rate is between one of the fixed rates (the LED corresponding to the nearest sampling rate will blink ). Use the "Sample Rate" field on the clock menu page in the SETUP area to see the actual sampling rate (e. g. , 48001Hz in the example to the right). The picture at the right applies to the H8000 - that of the H8000FW will be similar. The bottom LED, EXT, has two possible states: · Solidly lit: When the bottom LED is solidly lit, all of the routed digital inputs are locked and all is right with the world. · Blinking regularly: When the bottom LED is blinking regularly, at least one (and maybe more than one) routed digital input is unlocked (i. e. , not synchronized to the external clock). Use the right-hand side of the clock menu page in the SETUP area to see which digital inputs are in fact unlocked. To check which digital inputs are routed, consult the routing menu pages discussed in Routing Configuration on page 41. Sample Rate Conversion (SRC) In general you need to make sure that any digital inputs are synchronized to the system sampling rate. If for whatever reason you cannot synchronize the AES/EBU 14 (1-8 on H8000) or S/P DIF 1/2 digital inputs to the system sampling rate, use sample rate conversion (SRC). [. . . ] See Digital inputs overdriving inputs, 58 panic muting, 28 Parameter area, 100 accessing, 5 gen. description, 12 use of DSP A/B key in, 100 Parameter key location, 5 parameters altering numeric, 15 text, 15 curves, 103 expert mode, 32, 100 for which DSP?, 31 ganged, 15 graphics, 103 modulating, 71 modulating, "box" level, 71 remote controlling, 71, 74, 85 taps, 102 textblocks, 102 trigger, 15 underlined, 85 parameters saved in Routing Storage area, 54 Patch Editor area accessing, 5 gen. See foot pedal jacks place holders, 75, 77, 81, See also redirection filling, 82 mods, 81 scaling, 82 trigs, 81 Power switch location, 6 Program area accessing, 5 gen. description, 11 Program key Manual Release 1. 1 the H8000FW Operating Manual ©2004-2006 Eventide Inc. Page 123 The H8000FW Operating Manual - Index location, 5 programs. [. . . ]