Setting up Digital VTRs for Dolby E and Dolby Digital Compatibility

Transcription

1 Version 1 Page 1/2 8/25/03 Setting up Digital VTRs for Dolby E and Dolby Digital Compatibility In all cases, any audio channels used for recording either Dolby E or Dolby Digital must be in unity gain mode. Depending on the VTR, proper unity gain mode requires either selecting unity in the setup menu or physically pressing in the audio level knobs. Manually adjusting audio level controls to set unity gain will not work. Editing of Dolby E requires cut edits. Cross fading will cause Dolby E frames to be corrupted at the edit point. Editing of Dolby Digital is not supported in any mode and can cause muting. Sony Digibeta A-500 Dolby E Compatible Dolby Digital Compatible Channel Bit Depth Sample Rate Conversion Advance Function Yes Yes 20bit No, does not require a special data mode No Since the Digibeta does not have any sample rate converters in the audio path or any timing compensation functions, the only menu settings that apply are to enable valid edits in Dolby E. The menu settings can be accessed using either a video monitor or the front panel timecode LED readout. To access the menu using a monitor, connect a monitor to the output BNC labeled Super. This will superimpose a detailed list of the menu items on the screen. Alternately the timecode window on the front panel will display the menu setting in a slightly more cryptic format. To access the Setup Menu using front panel timecode window: 1. Press MENU SETUP key 2. The hours and minutes in the timecode field will flash the menu # 3. Use the shuttle wheel to select the desired menu # 1 4. To change the selected menu parameter, hold the shuttle key. This causes the frames in the timecode field to flash the parameter # indicating its setting. 5. While holding the shuttle key, turn the shuttle wheel to change the parameter #304 Selects edit on field 1 or field 2 (field 1 is correct mode for Dolby E). Field 1 is denoted as 0 in timecode frame window. #317 Selects X/FADE or CUT EDIT (cut is correct mode for Dolby E). Cut is denoted as frame 0 in timecode frame window. 1 If menu items above #20 do not appear, switch #1 of the #100 switch block on internal PC board S52 needs to be On.

2 Version 1 Page 2/2 8/25/03 #803 Selects 5ms or 10ms x/fade time (has no effect if unit is set to cut edit). 5ms is denoted as frame 0 in timecode frame window. Sony Digibeta A-500 Application examples: 1. When duplicating or cloning a Digibeta tape, the audio signal (whether PCM audio, Dolby Digital data or Dolby E data) will always maintain the same audio/video sync relationship from the master to the copy. 2. When the Dolby E data on tape is in sync with video, playback will result in the decoded audio (decoded via the DP572 Dolby E Decoder) lagging one frame behind video due to the one frame decoding delay within the DP When the Dolby E data on tape is advanced one frame with respect to video, playback will result in the decoded audio (decoded via the DP572 Dolby E Decoder) being in sync with video.

3 Version 3 Page 1/3 8/25/03 Setting up Digital VTRs for Dolby E and Dolby Digital Compatibility In all cases, any audio channels used for recording either Dolby E or Dolby Digital must be in unity gain mode. Depending on the VTR, proper unity gain mode requires either selecting unity in the setup menu or physically pressing in the audio level knobs. Manually adjusting audio level controls to set unity gain will not work. Editing of Dolby E requires cut edits. Cross fading will cause Dolby E frames to be corrupted at the edit point. Editing of Dolby Digital is not supported in any mode and can cause muting. Sony HDCAM HDW-F500 Dolby E Compatible Yes (HDW-F500 machines only) Dolby Digital Compatible Yes (with upgraded hardware and firmware) Channel Bit Depth 20bit Sample Rate Conversion Yes, but offers a data mode for Dolby E/Dolby Digital Advance Function Yes (can only be disabled on output) 24 Frame Compatible Yes (Dolby Tri-Level Sync Adaptor required for Dolby E) The menu settings that apply are for disabling sample rate conversion, enabling valid edits with Dolby E, selecting Dolby E or Dolby Digital compatibility, and selecting the appropriate audio advance parameter according to the application. To access the Setup Menu: 1. Press SETUP key 2. Press F6 (VTR SETUP) 3. Scroll to menu number #819 Burst / Continuous Mode Burst mode is required for encoding Dolby E. Continuous mode is required for encoding Dolby Digital. This mode is only available in newer or updated models. Models without this mode only support Dolby E recording and do not support Dolby Digital recording. This selection will be grayed out or missing if it is unavailable on your machine. #820 Non- Mode Selecting a Mode enables/disables audio inputs and sample rate conversion for those indicated audio channels. Selecting an SDI mode disables the audio input connectors on the indicated audio channels, and indicates to the HDCam to expect embedded audio. The appropriate mode for Dolby E and Dolby Digital is AES for those channels containing Dolby E or Dolby Digital.

4 Version 3 Page 2/3 8/25/03 Non- Channel modes Mode 1 - SDI Channels 1&2 Mode 2 - SDI Channels 3&4 Mode 3 - SDI Channels All Mode 4 - AES Channels 1&2 Mode 5 - AES Channels 3&4 Mode 6 - AES Channels All #821 Advance Mode This mode only effects the output of the VTR. Recording Dolby E such that the Dolby E data will be in sync with picture on tape requires external adjustment of the audio signal to account for the one-frame period Dolby E processing delay. Turning Advance On allows audio to be played out of the VTR one frame ahead of picture (fig.1). Turning Advance OFF will preserve the audio/video sync relationship that is present on the videotape at the output of the VTR. Note: When recording Dolby E to tape, the audio advance function is disabled. advance will only effect the playback of Dolby E from tape, not E-to-E. HDW-F500 Application examples: 1. When duplicating or cloning an HDCam tape containing Dolby E, turning Advance OFF will maintain the same audio/video sync relationship from the master to the copy. 2. When Dolby E is in sync with video on tape, turning Advance ON will result in the decoded audio (decoded via the DP572 Dolby E Decoder) being in sync with video due to the one frame decoding delay within the DP When Dolby E is advanced one frame on tape with respect to video, turning Advance OFF will result in the decoded audio (decoded via the DP572 Dolby E Decoder) being in sync with video. #317 Edit Mode Selects cut or crossfade edits. Cut is the correct mode for Dolby E). To change the frame rate: 1. Push the Maintenance Button - Located near the bottom left corner of the display screen (with a pen tip or similar device). 2. Hold SFT (shift) key & press F8 key (MAINT/EXEC) 3. Press F9 key (OTHERS/CHECK) 4. Press F9 key (SYSTEMS MENU) 5. Press F2 key to cycle through selections of frame rates 6. Press F9 key (EXECUTE) 7. The system will reboot automatically

5 Version 3 Page 3/3 8/25/03 and are in sync on tape and are in sync on tape Advance feature OFF Advance feature ON Figure 1 Output of HDCam HDW-F500 and sync relationship is maintained Output of HDCam HDW-F500 is ahead of video by one video frame period

6 Version 5 Page 1/3 5/11/06 Setting up Digital VTRs for Dolby E and Dolby Digital Compatibility In all cases, any audio channels used for recording either Dolby E or Dolby Digital must be in unity gain mode. Depending on the VTR, proper unity gain mode requires either selecting unity in the setup menu or physically pressing in the audio level knobs. Manually adjusting audio level controls to set unity gain will not work. Editing of Dolby E requires cut edits. Cross fading will cause Dolby E frames to be corrupted at the edit point. Editing of Dolby Digital is not supported in any mode and can cause muting. Sony HDCAM HDW-M2000 Dolby E Compatible Yes, when in non-audio and burst modes Dolby Digital Compatible Yes, when in non-audio and continuous modes Channel Bit Depth 20bit Sample Rate Conversion Yes, but offers a data mode for Dolby E/Dolby Digital Advance Function Yes (can only be disabled on output) 24 Frame Compatible Yes (Dolby Tri-Level Sync Adaptor required for Dolby E) The menu settings that apply are for disabling sample rate conversion, enabling valid edits with Dolby E, selecting Dolby E or Dolby Digital compatibility, and selecting the appropriate audio/video output sync parameter according to the application. #304 Edit Field 1F - (field 1 is correct mode for Dolby E) #317 Edit Set to Cut (cut is correct mode for Dolby E) #825 Advance Mode This mode only effects the output of the VTR. Recording Dolby E such that the Dolby E data will be in sync with picture on tape requires external adjustment of the audio signal to account for the one-frame period Dolby E processing delay. Turning Advance On allows audio to be played out of the VTR one frame ahead of picture (fig.1). Turning Advance OFF will preserve the audio/video sync relationship that is present on the videotape at the output of the VTR. Note: When recording Dolby E to tape, the audio advance function is disabled. advance will only effect the playback of Dolby E from tape, not E-to-E. HDW-M2000 Application examples: 1. When duplicating or cloning an HDCam tape containing Dolby E, turning Advance OFF will maintain the same audio/video sync relationship from the master to the copy.

7 Version 5 Page 2/3 5/11/06 2. When Dolby E is in sync with video on tape, turning Advance ON will result in the decoded audio (decoded via the DP572 Dolby E Decoder) being in sync with video due to the one frame decoding delay within the DP When Dolby E is advanced one frame on tape with respect to video, turning Advance OFF will result in the decoded audio (decoded via the DP572 Dolby E Decoder) being in sync with video. #819 (Burst/Continuous Mode) and #820 (/Non- Mode) have been removed from the setup menu, their functions are now in the Maintenance menu. and are in sync on tape and are in sync on tape Advance feature OFF Advance feature ON Figure 1 Output of HDCam HDW-M2000 and sync relationship is maintained Output of HDCam HDW-M2000 is ahead of video by one video frame period To access the Maintenance Menu: 1. Press HOME + Menu (F5) 2. Rotate Multi Control (SMALL knob below tape slot) to select M3: OTHERS 3. Press SET 4. Select M37: AUDIO CONFIG 5. Press SET 6. Select M372: NON AUDIO INPUT 7. Press SET 8. Select either TR1/TR2 or TR3/TR4 9. Press and hold HOME 10. Rotate Multi Control knob to choose a. AUDIO (PCM) b. BURST (Dolby E)

8 Version 5 Page 3/3 5/11/06 c. CONT (AC-3) Note: When continuous mode is selected, the resolution for digital audio signals is limited to a maximum of 16-bits. While Dolby Digital (AC-3) is a 16bit technology, it is capable of 24bit audio resolution, therefore continuous mode does not effect the fidelity of the audio encoded within a Dolby Digital (AC-3) data stream. 11. Press SET To select audio inputs: 1. Locate the INPUT key on the front panel. It is located below the meter display, and at the extreme left edge of the front panel. There are two keys; the upper key is the INPUT key. 2. Pressing the INPUT key puts the unit into the input selection mode. The currently selected input for each channel will flash. Pressing the input selection key immediately below the meter display for each channel will cycle the input selection for that channel among all of the available input sources. If a channel has been selected as a non-audio channel a Data indication will appear when anything other than ANA log is selected. 3. If the selected source is not available (i.e., not present at the input) the indicator will flash rapidly. 4. Pressing the INPUT key again will take the unit out of the selection mode. To change the frame rate to either Hz or 50 Hz: #013 System Frequency Select 1. Set to ON (enable switching) This is done by rotating the small Multi Control knob to select ON 2. Press SET 3. Rotate Multi Control knob to desired system frequency. 4. Press SET 5. Turn off VTR. The next time the VTR is turned on it will operate in the new mode.

9 Version 1 Page 1/2 10/19/05 Setting up Digital VTRs for Dolby E and Dolby Digital Compatibility In all cases, any audio channels used for recording either Dolby E or Dolby Digital must be in unity gain mode. Depending on the VTR, proper unity gain mode requires either selecting unity in the setup menu or physically pressing in the audio level knobs. Manually adjusting audio level controls to set unity gain will not work. Editing of Dolby E requires cut edits. Cross fading will cause Dolby E frames to be corrupted at the edit point. Editing of Dolby Digital is not supported in any mode and can cause muting. Sony HDCAM SRW-5500 Dolby E Compatible Yes Dolby Digital Compatible Yes Channel Bit Depth 20bit PCM I/O Delay Yes (audio output advance and additional input delay) 24 Frame Compatible Yes (Dolby Tri-Level Sync Adaptor required for Dolby E) The menu settings that apply are for disabling sample rate conversion, enabling valid edits with Dolby E, selecting Dolby E or Dolby Digital compatibility, and disabling PCM I/O delay on output. To access the Setup Menu: 1. press Setup key 2. press F6 (VTR SETUP) 3. scroll to menu number #809 Digital Jog Sound Mode (On/Off) This menu provides the ability to mute the audio output during a jog/shuttle operation. Muting the audio may be desirable if the downstream Dolby E decoder does not support or is not configured for PCM Bypass operation. #830 Input Mode (SDI/AES) #831 Non- Mode (SDI/AES/OFF) This menu enables/disables sample rate conversion on the selected audio channels. Selecting Non- disables sample rate conversion for the selected channels and inputs. Selection is in channel pairs from 1/2 to 11/12. #831 HDCAM Record Mode (Burst/Continuous) Burst mode is required for encoding Dolby E. Continuous mode is required for encoding Dolby Digital. #821 Advance Mode This menu enables/disables the 1 frame PCM audio advance on output only. Turning Advance On will enable the 1 frame PCM audio advance on

10 Version 1 Page 2/2 10/19/05 output (fig.1). This feature should be -1F when Dolby E is in sync on tape, and Off when Dolby E is advanced on tape one frame with respect to video. 1. hold SFT (shift) key and press (Diag) 2. hold SFT (shift) key and press (Mainte Exec) 3. press (Others/Check) 4. press (Alt) 5. press (Phase set) 6. press (F4) PB Out (-1F/OFF) Input Delay should be set to OFF #317 Edit Mode Selects cut or crossfade edit (cut is correct mode for Dolby E) #305 Field Edit Mode Selects if the VTR edits on field or frame boundaries (1-2 is correct mode for Dolby E) To change the frame rate: 1. hold SFT (shift) key and press (Diag) 2. hold SFT (shift) key and press (Mainte Exec) 3. press (Others/Check) 4. press (Systems Menu) 5. change line, scan mode, frame rate and record format as required 6. System will reboot automatically and are in sync on tape and are in sync on tape Advance feature OFF Advance feature ON Figure 1 Output of HDCam HDW-F500 and sync relationship is maintained Output of HDCam HDW-F500 is ahead of video by one video frame period

11 Version 1 Page 1/1 1/23/06 Setting up Digital VTRs for Dolby E and Dolby Digital Compatibility In all cases, any audio channels used for playing back either Dolby E or Dolby Digital must be in unity gain mode. Depending on the VTR, proper unity gain mode requires either selecting unity in the setup menu or physically pressing in the audio level knobs. Manually adjusting audio level controls to set unity gain will not work. Sony JH-3 HDCAM Compact Player Dolby E Compatible Yes Channel Bit Depth 24bit Advance Function No 24 Frame Compatible Yes (Dolby Tri-Level Sync Adapter required for Dolby E) No menu settings need to be configured in order to playback Dolby E audio. However, menu settings for audio muting can be configured to prevent corrupt Dolby E from being sent to the audio outputs. Note: This machine has no AES digital audio outputs; therefore all audio, including Dolby E is embedded in the HDSDI output. Therefore, a suitable Dolby E compliant de-embedder must be used to access the Dolby E signals. To access the Setup Menu: 1. Press the SHIFT and SET keys 2. Scroll to menu number #104 Muting Time Selecting Lock mutes the audio output until the machine has locked at play speed. This prevents corrupted Dolby E data being sent to the audio output at rates slower than play speed. #802 Digital Muting in Shuttle Mode Selecting off mutes the audio output while the machine is shuttling. This prevents corrupted Dolby E data being sent to the audio output.

12 Version 3 Page 1 / 4 11/05/06 Setting up Digital VTRs for Dolby E and Dolby Digital Compatibility In all cases, any audio channels used for recording either Dolby E or Dolby Digital must be in unity gain mode. Depending on the VTR, proper unity gain mode requires either selecting unity in the setup menu or physically pressing in the audio level knobs. Manually adjusting audio level controls to set unity gain will not work. Editing of Dolby E requires cut edits. Cross fading will cause Dolby E frames to be corrupted at the edit point. Editing of Dolby Digital is not supported in any mode and can cause muting. Dolby E / Dolby Digital can only be recorded successfully when the appropriate AES pair is set to data mode Sony MSW-M2000P/1 Dolby E Compatible Yes, when in data mode Dolby Digital Compatible Yes, when in data mode Channel Bit Depth 16 and 24 bit Sample Rate Conversion Yes, this should not be used for Dolby E / Dolby Digital Advance Function Yes, on output (can be disabled) 24 Frame Compatible No To access the setup menu: 1. Press HOME 2. Press F5 MENU 3. Scroll to menu number with rotary MULTI CONTROL or UP and DOWN buttons The following menu settings need to be set in order to record Dolby E / DD Menu # Short Menu Title Menu Title Setting for Dolby E / Dolby Digital Compatibility 317 Edit Edit Mode Cut Edit 320 Aud PB Proc Digital PB Cut Process on Edit Point 801 DJ Sound Digital Jog Sound Off 802 Shuttl Mute Digital Mute in Full Shuttle Mode 815 ASRC Sampling Rate Off Converter 823 NAU FLG PB Non- Flag PB On for the AES pair containing Dolby E units to be compatible with Dolby technologies. All menu information is believed to be accurate, however changes to any manufactures software and functionality is at the discretion of that manufacturer. You should consult your product's manufacturer for more information.

13 Version 3 Page 2 / 4 11/05/ A. Advance Advance Mode Turning Advance On will enable the 1 frame PCM audio advance on output (fig.1). This feature should be On when Dolby E is in sync on tape and the Dolby E decoding delay is not compensated for in the replay video path, and Off when Dolby E is advanced on tape one frame with respect to video or the Dolby E decoding delay is compensated elsewhere 304 Edit Field Edit Field 1F #819 and #820 have been removed from the setup menu, their functions are now in the Maintenance menu. The following settings (AES bit depth and Data mode) need to be set in place of #819 and #820. units to be compatible with Dolby technologies. All menu information is believed to be accurate, however changes to any manufactures software and functionality is at the discretion of that manufacturer. You should consult your product's manufacturer for more information.

14 Version 3 Page 3 / 4 11/05/06 To access the Maintenance Menu: Note the machine WILL NOT ENTER MAINTENANCE MODE UNLESS the Push Switch on the SS89 card is activated. The Push switch is on the top left hand side. Marked MAINT, Alternatively you can do this via dip switches 1,2, 6 on S1502. To set up the machine for recording Dolby E (AES bit depth settings): 1. press HOME + Menu (F5) this will enter the Maintenance Menu 2. rotate Multi Control (SMALL knob below tape slot) to select M3: OTHERS 3. press Set 4. select M37: AUDIO CONFIG 5. press Set 6. Scroll to M371 datalength press SET (F5) 7. Hold down HOME and change value with the MULTI CONTROL to choose a. 16bit 8 channel (PCM or 16-bit Dolby E) b. 24bit 4 channel (16/20 bit Dolby E or Dolby Digital) 8. Confirm changes by pressing SET 9. Restart the machine for the changes to be set 10. With a tape in the machine, and 24bit, 4 channel selected, IMX4 should be now present on the front panel, as apposed to IMX which denotes 16bit, 8 channel mode. To set up the machine for recording Dolby E (data mode settings): 1. press HOME + Menu (F5) this will enter the Maintenance Menu 2. rotate Multi Control (SMALL knob below tape slot) to select M3: OTHERS 3. press Set 4. select M37: AUDIO CONFIG 5. press Set 6. select M372: NON AUDIO INPUT 7. press Set 8. select either TR1/TR2 or TR3/TR4 9. press HOME 10. rotate Multi Control knob to choose c. (PCM) d. Data (Dolby E or Dolby Digital) 11. press Set 12. Note the machine must be power cycled for the change to take place. units to be compatible with Dolby technologies. All menu information is believed to be accurate, however changes to any manufactures software and functionality is at the discretion of that manufacturer. You should consult your product's manufacturer for more information.

15 Version 3 Page 4 / 4 11/05/06 To select audio inputs: 1. Locate the Input key on the front panel. It is located below the meter display, and at the extreme left edge of the front panel. There are two keys, the upper key is the Input key. 2. Pressing the Input key puts the unit into the input selection mode. The currently selected input for each channel will flash. Pressing the input selection key immediately below the meter display for each channel will cycle the input selection for that channel among all of the available input sources. If a channel has been selected as a non-audio channel a Data indication will appear when anything other than ANA log is selected. 3. If the selected source is not available (i.e., not present at the input) the indicator will flash rapidly 4. Pressing the Input key again will take the unit out of the selection mode. To change video frame rate: 1. Navigate to menu # Press F2 SELECT 3. Alter 525/625 system select to ON by turning the MULTI CONTROL 4. Press F5 SET 5. Alter frame rate using MULTI CONTROL 6. Press F5 SET 7. Reboot Machine N.B. It has been noted that on occasion, the DE line position upon playback from tape matched that of the EE mode DE line position (97 for PAL, 101 for NTSC). Rebooting the IMX machine fixed this problem so the DE line position on tape playback was output correctly on lines 11 for PAL and 14 for NTSC. EE mode DE line position should remain at 97 for PAL, 101 for NTSC. units to be compatible with Dolby technologies. All menu information is believed to be accurate, however changes to any manufactures software and functionality is at the discretion of that manufacturer. You should consult your product's manufacturer for more information.