LavryGold AD122-96 MkIII - Revision history

Brad Johnson at 21:17, 28 September 2018

2018-09-28T21:17:09Z

Brad Johnson at 18:49, 4 August 2017

2017-08-04T18:49:32Z

Brad Johnson at 23:33, 3 August 2017

2017-08-03T23:33:14Z

Brad Johnson at 18:43, 19 May 2017

2017-05-19T18:43:54Z

Brad Johnson at 18:42, 19 May 2017

2017-05-19T18:42:38Z

Brad Johnson at 23:55, 18 June 2014

2014-06-18T23:55:14Z

Brad Johnson at 21:02, 11 June 2014

2014-06-11T21:02:25Z

Brad Johnson at 22:40, 29 May 2014

2014-05-29T22:40:37Z

Brad Johnson at 22:49, 20 June 2013

2013-06-20T22:49:26Z

Brad Johnson at 22:48, 20 June 2013

2013-06-20T22:48:38Z

@@ Line 47: / Line 47: @@
 ===AC Power===
--264 [[VAC]] @ 47-63[[Hz]] , Fuses 0.5A Fast Blow 250V  Fuse Size 5mm x 20mm (Replaces older 0.25inch x 1.25 inch size)
+-264 [[VAC]] @ 47-63[[Hz]] , Fuses ¾ Ampere Fast Blow 250V  Fuse Size 5mm x 20mm (Replaces older 0.25inch x 1.25 inch size) This supersedes the former recommendation of ½ Ampere 250 volt fast blow fuses. New production units ship with 750mA (3/4 Ampere) 250 V FAST fuses installed.
 The power supply automatically adjusts to AC inputs in the range of 90 to 264 volts at line frequencies between 47 and 63 Hz. It is not necessary to change any settings.

@@ Line 56: / Line 56: @@
 *The AD122-96 MkIII is calibrated at the factory for +24dBu = 0dBFS. If your studio uses +18dBu = 0dBFS (which is the same as “-14dBFS = 0dBVU = +4dBu); you will need to increase the input gain using the front panel GAIN trimmers. The FINE mode of the meters effectively “expands” the resolution of the meters around the reference level so that each LED segment equals a level change of 0.2dB (two-tenths of a dB). Both FINE mode On/Off setting and the reference level setting are available in the BAR-GRAPH & DISPLAY SCREEN. A The reference level can be set between -20 and -10 dBFS in one dB steps.
 *The AD122-96 MkIII will not un-mute unless it is receiving a valid clock signal in any external clock mode. This will only occur when the front panel Lock indicator is illuminated.  When operating on external clock with a "known-good" analog signal connected to the inputs, if the AD122-96 MkIII does not appear to pass a signal (no activity on front panel meters and digital output is muted), check that the MAIN screen setting is to the correct sample frequency and type of sync (BNC or XLR AES).
-* The BNC Word Clock input of the AD122-96 MkIII IS NOT internally terminated. Although in most cases termination is not necessary with short cables in point to point connection (the signal is not “chained” to other slave devices); if you experience problems getting the MkIII to lock to a “known-good” external BNC Word Clock signal, a BNC “T” should be placed on the Word Clock input of the MKIII and a 75 Ohm NNC terminator placed on the “T” opposite the incoming Word Clock cable to provide termination. External clock units that have termination “auto sensing” often require the AD122-96 MkIII’s Word Clock input terminated to function properly.
+* The BNC Word Clock input of the AD122-96 MkIII IS NOT internally terminated. Although in most cases termination is not necessary with short cables in point to point connection (the signal is not “chained” to other slave devices); if you experience problems getting the MkIII to lock to a “known-good” external BNC Word Clock signal, a [[BNC “T”]] should be placed on the Word Clock input of the MKIII and a 75 Ohm [[BNC terminator]] placed on the “T” opposite the incoming Word Clock cable to provide termination. External clock units that have termination “auto sensing” often require the AD122-96 MkIII’s Word Clock input terminated to function properly.
 *The internal tone generator can be used to confirm the AD122-96 MkIII digital output is connected and synchronized properly. The settings are available in the TEST TONE screen, and the analog input is muted when the internal tone generator is activated.
 * When employing “input clipping” to achieve elevated digital levels, use of some front panel Gain is recommended to avoid overloading the analog input stage prior to the input of the AD converter stage. For example; if the input level will exceed +24dBu; it is recommended that the minimum amount of gain corresponds roughly to the number of dB’s the input level would need to exceed +24dBu with the factory setting to achieve the desired amount of “clipping.” By increasing the Gain, the input level will remain below +24dBu and still result in the desired amount of “clipping” without overload at the input stage.

@@ Line 47: / Line 47: @@
 ===AC Power===
--264 VAC @ 47-63Hz , Fuses 0.5A Fast Blow 250V  Fuse Size 5mm x 20mm (Replaces older 0.25inch x 1.25 inch size)
+-264 [[VAC]] @ 47-63[[Hz]] , Fuses 0.5A Fast Blow 250V  Fuse Size 5mm x 20mm (Replaces older 0.25inch x 1.25 inch size)
 The power supply automatically adjusts to AC inputs in the range of 90 to 264 volts at line frequencies between 47 and 63 Hz. It is not necessary to change any settings.

@@ Line 47: / Line 47: @@
 ===AC Power===
--264 VAC @ 47-63Hz , Fuses 0.5A Slow 250V  Fuse Size 5mm x 20mm (Replaces older 0.25inch x 1.25 inch size)
+-264 VAC @ 47-63Hz , Fuses 0.5A Fast Blow 250V  Fuse Size 5mm x 20mm (Replaces older 0.25inch x 1.25 inch size)
 The power supply automatically adjusts to AC inputs in the range of 90 to 264 volts at line frequencies between 47 and 63 Hz. It is not necessary to change any settings.

@@ Line 47: / Line 47: @@
 ===AC Power===
--264 VAC @ 47-63Hz , Fuses 0.5A Slow 250V  Fuse Size 0.25inch x 1.25 inch
+-264 VAC @ 47-63Hz , Fuses 0.5A Slow 250V  Fuse Size 5mm x 20mm (Replaces older 0.25inch x 1.25 inch size)
 The power supply automatically adjusts to AC inputs in the range of 90 to 264 volts at line frequencies between 47 and 63 Hz. It is not necessary to change any settings.

@@ Line 1: / Line 1: @@
 ==Product Description==
 The LavryGold AD122-96 MkIII is a high-end stereo AD converter intended primarily for Mixing and Mastering applications; with balanced professional level [[XLR]] inputs and an XLR/[[AES]] digital output. There is a [[BNC]] [[Word Clock]] input and output, as well as an XLR/AES sync input for external synchronization.
 [http://www.lavryengineering.com/products/pro-audio/ad122-96-mkiii.html For more information on the LavryGold AD122-96 MkIII click here]

← Older revision		Revision as of 21:02, 11 June 2014
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	The power supply automatically adjusts to AC inputs in the range of 90 to 264 volts at line frequencies between 47 and 63 Hz. It is not necessary to change any settings.		The power supply automatically adjusts to AC inputs in the range of 90 to 264 volts at line frequencies between 47 and 63 Hz. It is not necessary to change any settings.
		+
		+	See [[LavryGold voltage setting]] for details on the AC power voltage setting and accessing the fuses.

	==Operating tips==		==Operating tips==

@@ Line 1: / Line 1: @@
 ==Product Description==
-The LavryGold AD122-96 MkIII is a high-end stereo AD converter intended primarily for Mixing and Mastering applications; with balanced professional level XLR inputs and an XLR/[[AES]] digital output. There is a [[BNC]] [[Word Clock]] input and output, as well as an XLR/AES sync input for external synchronization.
+The LavryGold AD122-96 MkIII is a high-end stereo AD converter intended primarily for Mixing and Mastering applications; with balanced professional level [[XLR]] inputs and an XLR/[[AES]] digital output. There is a [[BNC]] [[Word Clock]] input and output, as well as an XLR/AES sync input for external synchronization.
 [http://www.lavryengineering.com/products/pro-audio/ad122-96-mkiii.html For more information on the LavryGold AD122-96 MkIII click here]
@@ Line 30: / Line 30: @@
 ===Line inputs===
-The AD122-96 MkIII has balanced XLR inputs. The balanced configuration is recommended for both [[balanced]] and [[unbalanced]] line level sources. Please note: for unbalanced connections, the peak input level is reduced to +18dBu. Use the front panel Gain trimmers to raise the input level a minimum of 6dB above the factory setting.
+The AD122-96 MkIII has balanced [[XLR]] inputs. The balanced configuration is recommended for both [[balanced]] and [[unbalanced]] line level sources. Please note: for unbalanced connections, the peak input level is reduced to +18dBu. Use the front panel Gain trimmers to raise the input level a minimum of 6dB above the factory setting.
 The XLR input is Pin 2 "+" and Pin 3 "-" for normal signal [[polarity]] when the Polarity setting in the Audio Control Screen is “+ POLARITY”. Thus, for the AD122-96 MkIII with balanced or unbalanced Pin 2 "+" connections, the signal polarity is "normal" or "non-inverted." Changing the Audio Control Screen setting to “- POLARITY” will result in inverted signal polarity for balanced and unbalanced Pin 2 "+" connections.
@@ Line 36: / Line 36: @@
 ===Digital output===
-The digital output of the AD122-96 MkIII is a male XLR connector; which transmits [[AES]] stereo digital audio. The output can be used to feed most [[SPDIF]] inputs by using a simple wired XLR to RCA [[adapter]] or [[adapter cable]]. Use of an impedance matching transformer is not recommended as long as guidelines for coaxial SPDIF connection cable length are followed.
+The digital output of the AD122-96 MkIII is a male XLR connector; which transmits [[AES]] stereo digital audio. The output can be used to feed most [[SPDIF]] inputs by using a simple wired XLR to [[RCA]] [[adapter]] or [[adapter cable]]. Use of an impedance matching transformer is not recommended as long as guidelines for coaxial SPDIF connection cable length are followed.
 ===Synchronization===