model am-16/b audio crosspoint switcher owner`s manual
Contents
1. to OFh Channel 1 to 16 Occccccc c Data increment Controller No 96 60h Ovvvvvvv 127 Chain Decrement Decrement current chain step status 1011nnnn nnnn to OFh Channel 1 to 16 c Data decrement Controller No 97 61h Ovvvvvvv 127 Bypass On Off Turn Bypass On Off emulates front panel button status 1011nnnn OFh Channel 1 to 16 Occccccc c Controller No 95 59h Ovvvvvvv v 0 OFF OVVVVVVV v 127 ON nnnn to OFh Channel 1 to 16 kkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk Transmitted Data Channel Messages kkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk Program Change Change an external device s program status 1100nnnn p 0 to 127 nnnn 0 to OFh Channel 1 to 16 AM 16 B Audio Switcher 31 kkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk Received Data System Messages kkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk Request All Programs FOh System Message 00h 00h 1Ch 360 Systems ID 04h Device number 04h AM16 B rev 2 00 and greater addr addr Device Address 00h thru 7Fh Set in Receive Channel Mode in far right display 00h Command byte 00h Request All Programs F7h End of System Message Returns All Programs command 01h Receive All Programs FOh System Exclusive Message 00h 00h 1Ch 360 Systems ID 04h Device num2. PPPP PPPPPP MIDI program number 38 AM 16 B Audio Switcher 0 Program 0 127 Program 127 Program Send Data Structure Ordered as Follows Byte 16 Step 1 Channel BYTE 0 structured as above Byte 17 Step 1 Program BYTE 1 structured as above Byte 30 Step 8 Channel BYTE 0 Byte 31 Step 8 Program BYTE 1 Byte 32 thru Byte 63 are Current Chain 32 Bytes There is one byte per step structured as follows BYTE OPPP PPPP PPPPPPP Program Number where 0 Program 0 99 Program 99 100 Bypass 101 End of Chain 127 Off Chain Data Structure Ordered as Follows Byte 32 Step 1 Program Number structured as above Byte 63 Step 32 Program Number kkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk AM 16 B Audio Switcher 39 All Dump Data Structure 32 Bytes per Program and Chain Total 4096 Bytes kkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk Program and Chain Data ordered as in Edit Buffer as follows Program 00 Byte 0 thru 31 Program 01 Byte 32 thru 63 Program 99 Byte 3168 thru 3199 Bypass Byte 3200 thru 3231 Chain 01 Byte 3232 thru 3263 Chain 27 Byte 4064 thru 4095 40 AM 16 B Audio Switcher APPENDIX H OPERATION AT 38 4k BAUD The AM 16 B operates at 31 25k baud because that rate is used by all MIDI equipment MIDI interfaces are available on a number of computers including the
3. 04h Device number 04h AM16 B rev 2 00 and greater addr addr Device Address 00h thru 7Fh Set in Receive Channel Mode in far right display 03h Command byte 03h Transmitting Edit Buffer data 64 bytes of Edit Buffer data F7h End of System Message Transmitting System Global Data FOh System Message 00h 00h 1Ch 360 Systems ID 04h Device number 04h AM16 B rev 2 00 and greater addr addr Device Address 00h thru 7Fh Set in Receive Channel Mode in far right display 06h Command byte 06h Transmitting System Global Data data byte 0 Current Mode read only 0 Program Select 1 Program Edit 2 Program Send 3 Program Send Enable 4 Program Chain 5 Receive Channel data byte Current Program Number read only 0 thru 99 Program 0 thru 99 100 Bypass data byte2 Current Chain Number read only Valid only when chain active 00h thru 1Ah 00h Chain 1 1Ah Chain 27 data byte3 Current Chain Step Number read only Valid only when chain active 00h thru 1Fh 00 Step 1 1Fh Step 32 data byte4 Current Receive Channel read write 00h Receive on All Oth thru 10h Ch 1 thru 16 11h OFF data byteb 200000SPM M Mapping ON OFF 1 ON 0 OFF read write P Protect ON OFF 1 ON 0 OFF read write S Stereo Mono Operation 1 Stereo 0 Mono read only F7h End of System Message Transmitting Program nn Data FOh System Message 00h 00h 1Ch 360 System
4. and the other is marked 485 Be certain to select the normal MIDI or 485 communications mode as described in section 2 41 1 43 EIA 422 485 TERMINATION JUMPER When using long lines to send data via EIA 485 to the switcher improved wave shape can be achieved by resistively terminating the line A 150 ohm termination can be placed across the line by installing JMP2 located at the right rear corner of the large circuit card As shipped the jumper is installed on only one of the pins remove it and place it across both pins IEEE Dee 10 AM 16B REAR PANEL 10 AM 16 B Audio Switcher Chapter Two USING THE AM 16 B AUDIO SWITCHER 2 00 ABOUT THE OPERATING MODES This overview begins with the most commonly used features and then reviews the more seldom used aspects You will find it helpful to put the AM 16 B in front of you while reading about its operation or refer to Figure 1 The AM 16 B has six operating modes selected by the blue MODE SELECT button One of these may be selected at a time and is indicated by an LED A helpful feature of the device is that other legends and displays appear only as necessary to clarify the task at hand 2 01 THE EDIT BUFFER As a convenience to the user the AM 16 B allows all editing to be done in a temporary memory space called the Edit Buffer Information placed in the Edit Buffer can be altered deleted and reviewed without fear of damag
5. 16 Audio Crosspoint Switcher contains a large feature set of useful tools designed to assist the broadcaster sound contractor and recording engineer This manual explores its technical capabilities and describes a number of ways it can be used to solve specific problems Because so many features are provided the reader will find it useful to refer to the Table of Contents when searching for a particular topic The AM 16 Series is an expandable audio switching matrix built of two primary components the AM 16 B Master Crosspoint Switcher and an optional companion piece the AM 16 E Expander Module These two basic blocks can be associated with each other in a variety of ways An exceptionally versatile remote control capability makes it easy to control the switchers using off the shelf controllers or sophisticated custom interfaces 0 10 THE AM 16 B MASTER CROSSPOINT SWITCHER All the components required for a basic 16 x 16 system are contained in the AM 16 B master unit It provides electronically balanced inputs and outputs and incorpor ates a new generation of CMOS crosspoint switches having exceptionally good audio performance Audio switching is managed by a micro computer system providing instantaneous response non volatile storage of routing programs and intelligent interfacing with remote controllers Large numeric displays provide an easy view of program status while backlit legends assist the user in operating the front panel co
6. 422 as the same thing in terms of how the software manages the remote ports When PROGRAM SEND ENABLE is on the transmit capability of the 485 port may be enabled by pressing the up arrow under the right display it will then read 485 Transmission of MIDI patch maps will continue as long as PROGRAM SEND ENABLE is in the on state Once 485 is selected PROGRAM SEND ENABLE may be turned off without leaving the 485 mode by pressing the down arrow under the left display 2 50 PROGRAM CHAIN MODE Program chains are strings of programs tied into a loop The advantage of chains is that they exist in a useful sequence presenting an easy way to switch between two or more programs that may not be consecutively numbered The AM 16 B has 27 chains each containing a maximum of 32 steps A step represents an individual program number link in the chain Chains may be recalled with front panel controls or through the remote control ports They are assigned Program Numbers 101 through 127 18 AM 16 B Audio Switcher Once a chain has been recalled it may be incremented using either the front panel controls remote control commands or a momentary footswitch 2 51 SELECTING A STORED CHAIN Chains are selected from the front panel by entering the PROGRAM CHAIN mode selecting a chain number from 1 to 27 with the left arrow buttons and pressing ENTER to initiate step one The middle arrow buttons may be used to increment or decrement
7. AM16 B rev 2 00 and greater addr addr Device Address 00h thru 7Fh Set in Receive Channel Mode in far right display 05h Command byte 05h Request System Global Data F7h End of System Message Returns System Global Data command 06h Receive System Global Data FOh System Message 00h 00h 1Ch 360 Systems ID 04h Device number 04h AM16 B rev 2 00 and greater addr addr Device Address 00h thru 7Fh Set in Receive Channel Mode in far right display 06h Command byte 06h Request System Global Data data byte 0 Current Mode read only 0 Program Select 1 Program Edit 2 Program Send 3 Program Send Enable 4 Program Chain 5 Receive Channel data byte Current Program Number read only 0 thru 99 Program 0 thru 99 100 Bypass data byte2 Current Chain Number read only Valid only when chain active 00h thru 1Ah 00h Chain 1 1Ah Chain 27 data byte3 Current Chain Step Number read only Valid only when chain active 00h thru 1Fh 00 Step 1 1Fh Step 32 data byte4 Current Receive Channel read write 00h Receive on All Oth thru 10h Ch 1 thru 16 11h OFF data byteb 200000S PM M Mapping ON OFF 1 ON 0 OFF read write P Protect ON OFF 1 ON 0 OFF read write S Stereo Mono Operation 1 Stereo 0 Mono read only F7h End of System Message Request Program nn AM 16 B Audio Switcher 33 FOh System Message 00h 00h 1Ch 360 Syste
8. ATARI 1000 MIDI ports may be added to IBM compatible computers with the ROLAND MPU 1PC or MPU 401 MIDI adapters When basic remote program selection is all that is required a number of desk top MIDI controllers exist such as the Lexicon MRC 1 EIA 422 and 485 ports often operate at non MIDI baud rates The AM 16 B may be ordered with an option that provides a 38 4k baud rate and EIA 422 and 485 ports only This model does not support MIDI send receive or program mapping due to the non standard baud rate It also will not work with the AM 16R Remote Control
9. Pin 1 Ground Pin 2 Pin 3 Signal Pin 4 Pin 5 Pin 6 Pin 7 Pin 8 Signal Pin 9 1 31 MIDI INPUT PORT Use a standard 5 pin MIDI cable to connect the MIDI IN of the AM 16 B to the MIDI OUTPUT of a MIDI equipped computer or MIDI program number transmitter Any device capable of sending program numbers via MIDI may be used to control the AM 16 B i e keyboards foot controllers etc 1 32 MIDI OUTPUT PORT A cable may be connected from the MIDI OUT connector of the AM 16 B to send program change information to other MIDI based audio equipment It may be desirable to use a Thru Box or a Midi Patcher to split the MIDI output into the separate parallel paths for all the outboard equipment Alternately the MIDI cable may be daisy chained through outboard gear equipped with Thru jacks 8 AM 16 B Audio Switcher The MIDI IN and MIDI OUT connectors may also be used to upload and download the contents of the AM 16 B s memory to a computer or to another AM 16 B See section 2 90 for further information on these features 1 33 INTERFACE PORT TO AM 16 E EXPANDER MODULES A 15 pin female D connector on the rear panel provides all signals needed to control additional AM 16 E Expander Modules A maximum of three expanders may be added and a special interface cable must be ordered to connect the expanders to the AM 16 B When ordering this cable specify whether one two or three AM 16 E expanders are to be connected 1 40 CON
10. connect to the and terminals and use the ground terminal for the shield Single ended unbalanced connections may be made between ground and either the or terminal The user therefore has the option of making the overall signal path inverting if desired It is a good idea to connect the unused input to the ground terminal for the same channel NOTE When wiring an input use only the ground terminal for that particular channel Do not share grounds with other channels 1 22 AUDIO OUTPUT CONNECTIONS Audio outputs are electronically balanced with respect to ground and have a source impedance of 100 ohms For balanced applications connect to the and terminals and use the ground only for the shield Single ended unbalanced connections may be made to either the or terminal and ground The user has the option of making the polarity of a signal path inverting by selecting the minus output Do not ground the unused output 1 23 BALANCED VS SINGLE ENDED GAIN STRUCTURE The gain of the AM 16 B depends on the type of connection made to it A gain of unity might be obtained with a balanced input connected to the and input terminals and a balanced output measured between the and output terminals The same input voltage applied between ground and a single input terminal will produce a differential output voltage 6 dB less Similarly a given input voltage applied in a balanced connection will produce an output voltage 6
11. dB less if measured between ground and either output terminal If both input and output are unbalanced the total reduction will be 12 dB 1 24 REAR PANEL INPUT GAIN ADJUSTMENTS Level trims on the rear panel adjust the input gain of each channel they do not alter the output amplifier gain The trims may be used to produce standardized output levels from different level audio sources An adjustment range of 6 dB to 4 dB is available AM 16 B Audio Switcher 7 1 25 FRONT PANEL AUDIO JACKS In addition to the rear panel connectors input and output channels 8 and 16 stereo pair 8 in the stereo mode are available on the front panel as single ended 1 4 jacks These convenience jacks are for studio situations where outboard equipment or test signals are to be inserted Plugging a jack into the front panel input connectors will disconnect signals presented to channels 8 or 16 on the rear panel inputs An additional 12 dB of gain is provided on the front panel input jacks This is to facilitate connection of consumer gear or 10 dB semi pro equipment The output jacks are at the same level as the rear panel connector and do not interrupt the rear panel output 1 30 THE EIA 422 485 PORT A 9 pin female D connector located on the rear panel serves as an EIA 422 receive only port or as an EIA 485 bi directional port See section 1 42 2 41 and Appendix F for additional data on using the ports The following connector pinout is used
12. turn 14 AM 16 B Audio Switcher memory protect off and resume the store operation Memory protect also affects remote control STORE commands Note that Memory Protect must be Off in order to use the unit with an AM 16R Remote Control It is a good idea to use the System Exclusive data transfer capability to create external backup copies of memory This way no matter what the cause of damaged memory it can be recovered See Section 2 90 2 26 COPYING PROGRAMS It is often convenient to copy programs from their original memory location to one or more new ones Many programs will be similar to each other and the easiest way to create variations is by editing the original but under a new program number NOTE Programs may have identical audio connections but posses different auxiliary Program Send information See Section 2 30 To copy a single program go to the PROGRAM SELECT mode and select a program number Press STORE once and using the arrow buttons under the program display select a new number in which to place the program copy Press STORE again to write to memory 2 27 THE BLOCK COPY FEATURE MAKING MULTIPLE COPIES To make multiple copies of a single program enter the PROGRAM SELECT mode select a program number and press ENTER Press BLOCK COPY Notice that the center display and right display appear Use the arrow buttons under the right display to select the upper limit first Next use the arrow buttons under the
13. F CH 5 GND T CH 14 GND AA CH 6 P CH 15 v CH6 V CH 15 w CH 6 GND X CH 15 GND u CH 7 2 CH 16 p CH 7 d CH 16 r CH 7 GND b CH 16 GND k CH 8 h CH8 CH 8 GND NOTE Pins N U Y c m and s are spare e CH 9 ground pins and may be used for shield a CH9 termination Pins x and BB are always left f CH 9 GND bank OUTPUT CONNECTOR PINOUT J2 Pin n t j y G6 HH JJ NN MM KK DD LL EE 2 FF 2 gt TGCS lt Signal CH 1 CH 1 CH 1 GND CH2 CH2 CH 2 GND CH3 CH3 CH 3 GND CH 4 CH 4 CH 4 GND CH5 CH5 CH 5 GND CH 6 CH6 CH 6 GND CH 7 CH 7 CH 7 GND CH 8 8 CH 8 GND CH9 CH9 CH 9 GND AM 16 B Audio Switcher 27 z CH 10 CH 10 CH 10 GND CH 11 CH 11 CH 11 GND CH 12 CH 12 CH 12 GND CH 13 CH 13 CH 13 GND CH 14 CH 14 CH 14 GND CH 15 CH 15 CH 15 GND CH 16 CH 16 CH 16 GND OOQGN x uU daxoumnrrt moozaczzu Pins M and S are reversed from input connector pinout assignments 28 AM 16 B Audio Switcher INPUT OUTPUT CONNECTOR PIN DIAGRAMS DIAGRAM BY PIN TOP 0 0 0 0 0 0998029995889 T OO OO OLE 9090065 9090880 Ge Ae eee 25058 ROI XO OO 90005 Bok ROR Re OSosoSo 0959099 O I9 9 9 ue wm BOTTOM 2 DIAGRAM BY SIGNAL NAME VIEWED FROM SOLDER SIDE OF CONNECTOR Note that pins M and S are 11 and 11 respec
14. FIGURING INTERNAL JUMPER OPTIONS CAUTION Before changing the jumpers turn the power off and unplug the unit Ground yourself to the chassis to discharge static electricity on your fingers before touching anything inside the box Several push on jumpers inside the AM 16 B select user options The jumpers may be removed with the fingers and replaced in the desired position by pressing them onto a pair of square pins until seated 1 41 MONAURAL STEREO SELECT Jumper JP1 located on the front panel printed circuit card selects whether the AM 16 B operates as a 16 x 16 monaural switcher or whether programs are paired together for stereo as an 8 x 8 unit Place the jumper between the center pin and the appropriate outer pin Each is clearly labeled STEREO or MONAURAL Stereo pairs are arranged as 1 and 9 5 and 13 2 and 10 6 and 14 3 and 11 7 and 15 4 and 12 8 and 16 This arrangement is also the way channels are paired for stereo on the front panel scribble strip 1 42 422 485 OR MIDI SELECT The AM 16 B can receive remote control commands through either the 9 pin EIA 422 485 connector or through the MIDI IN port It is necessary to select one or the other with jumper JMP1 located on the right rear corner of the large circuit card This is set at the factory for EIA 422 485 for use with the AM 16R Remote AM 16 B Audio Switcher 9 Place the jumper between the center pin and the appropriate outer pin One is marked MIDI
15. MODEL AM 16 B AUDI O CROSSPOI NT SWITCHER OWNER S MANUAL REVISION 2 01 PROFESSIONAL DIGITAL AUDIO 360 SYSTEMS 5321 Sterling Center Dr Westlake Village CA 91361 TEL 818 991 0360 FAX 818 991 1360 i AM 16 B Audio PRODUCT IMPROVEMENTS AND 360 Systems reserves the right to make changes or improvements to its products without incurring any obligation to incorporate such changes or improvements in units previously sold or shipped TRADEMARKS AND PATENTS 360 Systems and AM 16 are trademarks of 360 Systems Software contained in this product is copyright by 360 Systems Designs incorporated in this product may be the subject of current or pending U S and foreign patents LIMITED WARRANTY The 360 Systems Model AM 16 Audio Switcher is warranted against defects in material and workmanship for a period of one year from date of original purchase This warranty includes parts and labor This warranty excludes units that have been modified repaired by unauthorized personnel or damaged by abuse improper operation dirt or static electricity 360 Systems assumes no liability whatsoever for real or consequen tial damages loss of profits inconvenience or any other losses due to non operation of the product 360 Systems sole liability under this limited warranty shall be the repair or replacement of defective product or components Products being returned under warranty shall be sent to 360 Systems or one of its f
16. O SWITCHER 2 00 About The Operating Modes 10 2 01 The Edit Buffer 10 2 10 Program Select Mode 10 2 11 Selecting Stored Programs 10 2 12 Remote Program Selection 10 2 20 Program Edit Mode 11 2 21 Constructing Audio Paths 11 2 22 Multiple Input Assignments 12 2 23 Storing Edited Paths As A Program Number 13 2 24 The Store Pending Timer 13 iii AM 16 B Audio Switcher 2 25 Memory Protect 2 26 Copying Programs 2 27 Block Copy Making Multiple Copies 2 28 Using Bypass As An Edit Compare Function 2 30 Program Send Mode 2 31 Creating MIDI Program Maps 2 32 Storing MIDI Program Maps 2 33 Editing MIDI Program Maps 2 40 Program Send Enable Mode 2 41 Selecting EIA 485 Transmission 2 50 Program Chain Mode 2 51 Selecting A Stored Chain 2 52 Programming a Chain 2 53 Storing A Chain 2 54 Editing A Chain 2 55 Special Chain Characters 2 56 Chain Footswitch Jack 2 57 Selecting Chain Steps Through MIDI 2 60 Receive Channel Mode 2 61 Programming the Receive Channel 2 70 Mono Stereo Modes 2 70 The Monaural Mode 2 71 The Stereo Modes 2 80 The Bypass Mode 2 81 Selecting Bypass 2 82 Programming Bypass 2 90 Transferring RAM Data Via MIDI System Exclusive 2 91 Sysex Transfers To The AM 16 B 2 92 Sysex Transfers From The AM 16 B APPENDIX Appendix A Initialization Appendix B Software Revision Number Appendix C Technical Specifications Appendix D Connector Components amp Wiring Appendix E Remote Control AM 16 B Midi Specificati
17. OFTWARE REVISION NUMBER From time to time different versions of software may be produced for the AM 16 B These may incorporate customer suggestions or they may support special purpose applications for the product Software is installed as a plug in chip inside the unit To determine which revision is present in a particular AM 16 B turn the power off Hold down the ENTER button and turn the power on again The display will show the revision number Owner s manuals may be revised occasionally and will also carry revision numbers to indicate their suitability for a particular unit The current revision number is 2 00 24 AM 16 B Audio Switcher APPENDIX C TECHNICAL SPECIFICATIONS MATRIX SIZE units STORED PGMS BANDWIDTH DISTORTION SIGNAL NOISE NOISE FLOOR CROSSTALK CONNECTORS FRONT PANEL JACKS INPUT INPUT Z INPUT GAIN MAXIMUM INPUT COMMON MODE OUTPUT OUTPUTZ MAX OUTPUT STABILITY REMOTE CONTROL DATA CABLE RUN DATA TRANSFER MIDI MAPPING MAP MEMORY POWER POWER SUPPLY DIMENSIONS WEIGHT MECHANICAL MATERIALS amp STANDARDS COUNTRY OF MFG 16 x 16 master switcher expandable w 16 x 16 expansion Configurable to mono stereo or multi channel systems 100 programs stored in non volatile memory Programs may control individual switches or operate as salvos DC to 50 kHz 3 dB Less than 008 THD N DC to 20 kHz 22 dBv 105 dB unweighted referred to maximum output 78 dBu 96 microv
18. PROGRAMMING THE RECEIVE CHANNEL Use the MODE SELECT button to enter the RECEIVE CHANNEL mode The center display will illuminate with the legend CHANNEL The currently assigned channel will be shown Aside from 1 16 the character o indicates Omni mode receives on all channels while OF means off that is not receiving on any channel The Unit Address number ranges from 0 to 127 A new channel number or Unit Address is automatically remembered when it is selected it is not necessary to store it AM 16 B Audio Switcher 21 2 70 THE MONAURAL MODE The AM 16 B is shipped from the factory set for 16 x 16 monaural operation The MONAURAL LED on the display indicates this mode Note that when operated in the monaural mode the stereo mode switch described below is not active Monaural operation is obtained by changing an internal jumper see section 1 41 for further information 2 71 STEREO MODES The Stereo Mode is selected by an internal jumper as outlined in Section 1 41 When operating the AM 16 B in stereo the PROGRAM EDIT mode offers a number of special stereo options to correct stereo signal placement problems For example source material may have reversed channels or signal be present on only one channel Use the STEREO MODE button to step through the options each mode is indicated by an LED on the front panel Stereo reverse simply exchanges the left and right channels Left L R sends the left input to the left and rig
19. am the unused ones with off for the MIDI send channel The completed set is now to be stored with a 16 AM 16 B Audio Switcher particular PROGRAM SELECT number within the switcher If this number was selected earlier it may now be stored as described in the following Section 2 32 2 32 STORING MIDI PROGRAM MAPS Press STORE once The PROGRAM SELECT mode will be entered and the STORE PENDING LED will light The left display shows the patch number being stored to Press STORE again The set of auxiliary programs are now stored as the program number shown and the STORE PENDING LED turns off If the left display does not show the desired program number use the arrow buttons to select a new number As before press STORE a second time to write to the new program number CAUTION Storing to a new number will also replace any audio path information for that number with the information associated with the newly created MIDI program map As with storing audio paths four seconds are allowed to make a selection before the switcher will exit the store pending mode Should this happen you may again press STORE once to re enter the mode A final selection can now be made and entered by pressing STORE again CAUTION In the event two different programs are transmitted on the same channel the second or last affects the receiving device 2 33 EDITING MIDI PROGRAM MAPS Midi program maps are edited simply by recalling the program nu
20. ber 04h AM16 B rev 2 00 and greater addr addr Device Address 00h thru 7Fh Set in Receive Channel Mode in far right display Oih Command byte 01h Receive All Patches data 4096 bytes of Patch and Chain data F7h End of System Message Edit Buffer Request FOh System Message 00h 00h 1Ch 360 Systems ID 04h Device number 04h AM16 B rev 2 00 and greater addr addr Device Address 00h thru 7Fh Set in Receive Channel Mode in far right display 02h Command byte 02h Request Edit Buffer F7h End of System Message Receive Edit Buffer FOh System Message 00h 00h 1Ch 360 Systems ID 04h Device number 04h AM16 B rev 2 00 and greater addr addr Device Address 00h thru 7Fh Set in Receive Channel Mode in far right display 03h Command byte 03h Receive Edit Buffer data 64 bytes of Edit Buffer data F7h End of System Message 32 AM 16 B Audio Switcher Remote Store Edit Buffer to Program nn Request FOh System Message 00h 00h 1Ch 360 Systems ID 04h Device number 04h AM16 B rev 2 00 and greater addr addr Device Address 00h thru 7Fh Set in Receive Channel Mode in far right display 04h Command byte 04h Request Remote Store nn nn 0 to 127 Patch or Chain Number 0 to 99 Program No 0 to 99 100 Bypass Program 101 to 127 Chain 1 to Chain 27 F7h End of System Message Returns ACK NAK Request System Global Data FOh System Message 00h 00h 1Ch 360 Systems ID 04h Device number 04h
21. center display to select the lower limit The switcher will not allow an improper range to be selected Press STORE twice to copy to the new block of memory 2 28 USING BYPASS AS AN EDIT COMPARE FUNCTION Because the bypass program is instantly available from the front panel it can be used to compare the audio effect of two different programs To do this load the BYPASS program with one selection select any other program and alternately turn BYPASS on and off noting the difference AM 16 B Audio Switcher 15 2 30 PROGRAM SEND MODE Each of the 100 stored programs carries with it a set of eight program change commands which are transmitted from the MIDI output port each time a new master program number is selected Each program change command within the set of eight consists of a channel number and a program number all may be different The channel number and program number together can map the information to the desired destination to select programs on equipment such as digital reverbs and effects units that have MIDI capability The auxiliary MIDI program sends are separate and unrelated to the audio functions Their use is entirely optional MIDI program changes are transmitted through the EIA 485 port as well as from the MIDI OUT connector They may be converted from EIA 485 back into MIDI at a distant location to provide long distance MIDI control 2 31 CREATING MIDI PROGRAM MAPS A set of auxiliary program changes will be a
22. d chain If desired use the left arrow buttons to select a different chain number and then press STORE to save to the new location 2 55 SPECIAL CHAIN CHARACTERS Aside from the numbers 0 through 99 the characters bP will be found in place of program 100 Program 100 is the special BYPASS mode and may be treated as any other program See section 2 80 for additional information on BYPASS The character means that the previous program selection will be duplicated if this character is entered It may be helpful to insert at times if you think you will want to insert additional steps into the center of the chain later on Similarly a step can be deleted by replacing a program number with End also occupies one of the 32 steps within the chain To enter chain press both right arrows simultaneously 2 56 CHAIN FOOTSWITCH JACK A momentary contact footswitch can be plugged into the front panel jack By placing the switcher in the PROGRAM CHAIN mode the chain will advance by one step each time the footswitch is depressed As a convenience the first step of the chain will not become active until the first time the switch is pressed 20 AM 16 B Audio Switcher This way the user can move from one chain selection to another without hearing all the intermediate programs It does not matter whether the footswitch is of the normally open or normally closed variety On power up the switcher looks to see wh
23. ed as a location for the edited work Use the arrow buttons under the left window to select the new program number Press STORE again and the STORE PENDING LED will go out The new set of paths is now stored as a program with a numeric identity 2 24 THE STORE PENDING TIMER In the Store Pending mode the AM 16 B s computer is waiting to see if a program number is selected and finally stored Four seconds are allowed to complete the operation If at the end of that interval the STORE button has not been pressed a second time the store pending mode will be exited This watch dog prevents accidental damage to valuable programs that might occur if the switcher was left armed 2 25 MEMORY PROTECT Memory protection is provided to prevent accidental erasure of valuable programs in the switcher It is a global function that is all programs are simultaneously protected It is also stored in non volatile RAM so that when power is turned off the protect function is remembered To set memory protect enter the PROGRAM SELECT mode Press the up arrow button under the center display the legend Pr on will appear Memory protect is now active To turn memory protect off press the down arrow button under the center display the legend Pr OFF will appear Memory protect is now disabled Should you attempt to store a program while memory protect is on it will not over write the existing one and will instead display Pr on To store
24. ether the contact is open or closed and accepts the opposite as the active command Remember the footswitch will not function until the switcher is placed in the PROGRAM CHAIN mode 2 57 SELECTING CHAIN STEPS THROUGH MIDI It is possible to move forward or backward through the chain steps via MIDI Refer to Appendix E for detailed information on the MIDI implementation MIDI controller 96 increments and emulates the footswitch MIDI controller 97 decrements the chain step number 2 60 RECEIVE CHANNEL MODE The AM 16 B receives remote control data on MIDI channels 1 16 and in Omni mode which is all channels simultaneously It can also be turned off and ignore all incoming channel data When a new channel number is selected it will be stored in non volatile memory Therefore each time the AM 16 B is turned on the last selected RECEIVE CHANNEL will be active The receive channel setting is global and applies to all programs Receive Channel Mode should be OFF for use with the AM 16R Remote Control and Unit Address should usually be between 0 and 3 when used with a single Remote System data bulk data transfers are always received regardless of whether a receive channel has been selected The number in the right hand display is the Unit Address Number This Adress applies to System data transfers as well as use with the AM 16R Remote Control The number set here determines which Level on the remote controls the AM 16B 2 61
25. for transmit and one for receive It is ideal for short cable runs less than 50 feet and because of its popularity in the music industry several inexpensive remote control units are available A wide range of IBM Apple and Atari software is also available for remote control MIDI cables may not be Y connected or used in multi drop configurations They may be easily split by connecting them to what is known as a Thru Box 4 AM 16 B Audio Switcher which actively drives each of its outputs Details regarding the Midi specification can be found in Appendix E 0 33 USING MIDI AND EIA 422 485 AT THE SAME TIME When the 422 485 port is used the AM 16 B is not listening on the MIDI input port However MIDI program maps see section 2 30 and bulk data transfers may still be transmitted through the MIDI output port This way outboard audio gear accepting MIDI program commands can be controlled by the switcher which in turn is controlled by a 422 485 transmitter AM 16 B Audio Switcher 5 Chapter INSTALLING THE AM 16 B 1 10 A C Connect the power cable to a grounded outlet Versions of this product are produced for use with different voltages Be certain the voltage marking on the rear panel is suitable for the area in which it is to be used 1 11 POWER SWITCH The A C power switch is located on the left side of the front panel It shows a blue area when in the on position One or more of the displays will also illuminate whe
26. ht outputs the right input is ignored Right L R sends the right input to the left and right outputs the left input is ignored The special stereo modes are selected as part of an edited program They are stored along with other characteristics and apply only to a particular program number The special stereo modes are inoperative when the switcher is jumpered for monaural use 2 80 THE BYPASS MODE The Bypass mode gives immediate access to a stored program to configure the switcher to a standardized set of audio paths The user may store anything in the bypass program For example all inputs and outputs might be connected in a straight through configuration or all signal paths might be muted or routed in some special way to create a default setup 2 81 SELECTING BYPASS The BYPASS program may be activated from the front panel with the momentary BYPASS button The BYPASS LED appears when active It may also be selected from the PROGRAM SELECT mode as Program 100 and when selected in this manner is always displayed as bP The BYPASS program may be quickly retrieved by using the down arrow to locate it just below program 00 Through the remote control ports BYPASS is also selected as program 100 It may also be remotely selected via MIDI controller 95 which emulates the front panel button 22 AM 16 B Audio Switcher 2 82 PROGRAMMING BYPASS To edit bypass select bP between program 99 and 00 Press ENTER and edit the p
27. ing real information in the main memory When a final decision has been reached the contents of the Edit Buffer are loaded into main memory with the STORE function Section 2 23 2 10 PROGRAM SELECT MODE The PROGRAM SELECT mode allows stored audio routing programs together with their associated PROGRAM SEND information to be recalled from memory See section 2 30 for more on auxiliary PROGRAM SEND capabilities Stored programs are recalled as program numbers and appear on the left numeric display One hundred program locations 00 through 99 are provided for storage of routing programs Program 100 is bypass and program numbers 101 through 127 select program chains 1 through 27 See Section 2 50 Program Chain Mode AM 16 B Audio Switcher 11 2 11 SELECTING STORED PROGRAMS To select a program press the MODE SELECT button until the PROGRAM SELECT LED comes on Use the up down arrows under the left display to change the program number When the desired program number is arrived at press ENTER The MODIFIED LED will extinguish and the new program will be active In PROGRAM SELECT mode the MODIFIED LED indicates that the displayed program is notthe currently active one that is the one being heard To make it active simply press ENTER This two step scheme allows one to move from a program to another without hearing all the intermediate possibilities Similarly if itis not known which program is active scroll through all
28. it 08h Receive Program nn 08h Transmitting Program nn Data 09h Receive Crosspoint Update 09h Transmit Crosspoint Update OAh Receive All Crosspoint Update OAh Transmit All Crosspoint Update OBh Receive ACK NAK OBh Transmitting ACK NAK AM 16 B Audio Switcher 37 APPENDIX G AM 16 B DATA STRUCTURES kkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk Edit Buffer Data Structure 64 Bytes kkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk Byte 00 thru Byte 15 are Current Source Dest Assignments 16 Bytes There is one byte per destination structured as follows Source 0MMS SSSS where SSSSS input 0 16 0 OFF 1 Source 1 16 Source 16 MM stereo mode 00 normal 01 reversed 10 L L R Left input feeds both outputs 11 R L R Right input feeds both outputs Destination Data Structure Ordered as Follows Byte 00 Destination 1 Source structured as above Byte 15 Destination 16 Source NOTE In Stereo operation only the first 8 bytes are used The left side of the pair 1 thru 8 and the mode bits determine the right side of the pair 9 thru 16 Although bytes 8 thru 15 are not used they must be sent It is suggested sending bytes 8 thru 15 equal 0 Byte 16 thru Byte 31 are Current Program Sends 16 Bytes There are two bytes per step structured as follows BYTE0 000C CCCC MIDI channel number 0 Off 1 Ch 1 16 16 BYTE 1
29. mber of interest entering the PROGRAM SEND mode and modifying the MIDI channel and program number data The old data will be recalled and displayed to assist you in the modifications Repeat the programming steps under 2 31 and STORE the modified information to the same program number AM 16 B Audio Switcher 17 2 40 PROGRAM SEND ENABLE MODE At times the MIDI program send information may not be wanted at the equipment it was intended for For example a digital reverb under MIDI control will always select the program commanded by the AM 16 B while you may have need for something different Turning PROGRAM SEND ENABLE off will suppress transmission of all program change commands without deleting them from memory Use the MODE SELECT button to enter the PROGRAM SEND ENABLE mode Toggle the up down arrows under the left display to select OF off or on The right display will show nor for normal if it hasn t been changed The last state is stored in non volatile memory and is retained when power is turned off It is also global that is it affects all programs 2 41 SELECTING EIA 485 TRANSMISSION If remote control data is to be received via EIA 422 which is listen only instead of by EIA 485 which is talk listen it is important that the 485 transmit protocols be disabled otherwise the AM 16 B may attempt communication on the line when a remote control device is also trying to use it It may be convenient to think of MIDI and
30. ment chain step Bulk data upload Bulk data download Bypass On Off Software hooks are described in detail in Appendix F The AM 16 B can receive commands through MIDI or the EIA 422 485 port but not both A user installed jumper selects a port as described in section 1 42 0 31 EIA 422 485 REMOTE CONTROL A nine pin D connector is provided for communication by the EIA 422 or EIA 485 electrical standards Each has the advantage of operation to at least 1 000 feet 305 meters Section 2 41 describes selection of MIDI or EIA 485 communication modes from the front panel EIA 422 is a receive only port on the AM 16 B It is possible to connect a number of switchers to a single 422 cable in a multi drop configuration with each listening on its own channel It may be convenient to think of 422 as a uni directional link EIA 485 is electrically similar to 422 but it is bi directional Many transmitters and receivers may be attached to a single twisted pair cable in a simple multi drop installation In use each box tests the cable to see if it is busy before using it An important feature of the AM 16 Series is that if any of the devices connected to a 485 line is turned off it releases the line This greatly enhances the reliability of larger systems Similarly any device can be unplugged from the 485 line without interfering with the integrity of the remote control line 0 32 MIDI REMOTE CONTROL MIDI uses two connectors one
31. ms ID 04h Device number 04h AM16 B rev 2 00 and greater addr addr Device Address 00h thru 7Fh Set in Receive Channel Mode in far right display 07h Command byte 07h Request Program nn nn nn 0 to 127 Program or Chain Number 0 to 99 Program No 0 to 99 100 Bypass Program 101 to 127 Chain 1 to Chain 27 F7h End of System Message Returns Program nn command 08h Receive and Store Program nn Stores Directly to Program RAM Current Machine status unaffected FOh System Message 00h 00h 1Ch 360 Systems ID 04h Device number 04h AM16 B rev 2 00 and greater addr addr Device Address 00h thru 7Fh Set in Receive Channel Mode in far right display 08h Command byte 08h Receive Program nn nn nn 20to 127 Patch or Chain Number 0 to 99 Program No 0 to 99 100 Bypass Program 101 to 127 Chain 1 to Chain 27 data 32 bytes of Program or Chain data F7h End of System Message Returns ACK NAK Receive Crosspoint Update Update crosspoint hardware amp Edit Buffer FOh System Message 00h 00h 1Ch 360 Systems ID 04h Device number 04h AM16 B rev 2 00 and greater 09h Command byte 09h Transmitting Crosspoint Update dest 00 thru OFh 00h Dest 1 OFh Dest 16 source 00 thru 10h 00h OFF 01h source 1 10h source 16 F7h End of System Message Returns ACK NAK 34 AM 16 B Audio Switcher Receive All Crosspoint Update Update crosspoint hardware amp Edit Buffer FOh System Excl
32. n power is applied 1 12 FUSE The A C fuse is located on the rear panel of the AM 16 B Replace it only with the same type and rating For 120 volts use a 1 amp 3AG slow blow For 230 volts use 1 2 amp 3 AG slow blow 1 20 AUDIO CONNECTOR WIRING Fifty six pin ELCO Type 8016 connectors are used for audio inputs and outputs Mating plugs are provided with loose terminals These bifurcated terminals are gold plated and provide excellent reliability and resistance to oxidation They may be installed in the plug shell while the AM 16 B is connected and operating and may be easily removed with an appropriate ELCO tool See Appendix D The pinout for the ELCO connectors appears in Appendix D It is also silk screened on the rear panel of the AM 16 B For reference pin locations are also provided Both inputs and outputs use an identical pinout with the exception of channel 11 which has the and connections reversed on the output connector Note that this discrepancy is not reflected in the rear panel silk screen 6 AM 16 B Audio Switcher The mating plugs provided with the AM 16 B include cable strain reliefs A variety of other connector parts are available from ELCO distributors See Appendix D for a listing of optional part numbers and sources 1 21 AUDIO INPUT CONNECTIONS Audio inputs are electronically balanced with respect to ground Each input is identical and has an impedance of 40 2 k ohms For balanced applications
33. ntrols The master unit may be operated as a 16 x 16 monaural switcher or as an 8 x 8 stereo unit In stereo audio channels are managed as pairs and are indicated as 1 through 8 on the displays Larger systems may be constructed by using several master units in parallel to provide an expanded number of inputs or outputs 0 20 THE AM 16 E EXPANDER MODULE Basic systems may be enlarged with the addition of one or more Expander modules They contain audio circuits identical to the master unit and use commands from the master s micro computer to control their audio A single expander module together with one master will make a 16 x 16 stereo switcher while one master and three expanders will provide a 16 x 16 matrix four channels deep as used in the new D2 format VTRs Expander Modules connect to the master unit by a single flat cable and are self powered They require no controls and are designed for use only with the AM 16 B master A maximum of three expanders may be connected to a single master 0 30 REMOTE CONTROL CAPABILITIES AM 16 B Audio Switcher 3 The master unit may be controlled locally from its front panel or remotely through MIDI or an EIA 422 485 port Apart from the basic tasks that may be directly executed through single commands many software hooks have been incorporated so that specialized functions may be written into custom software Basic remote commands include Program recall Increment chain step Decre
34. of them which happens very quickly and note the program number displayed at the time the MODIFIED LED goes out this is the current program 2 12 REMOTE PROGRAM SELECTION Programs can also be recalled through remote program change commands without touching the front panel buttons To receive them set the AM 16 B to the channel number on which the programs are to be transmitted See section 2 60 When a program number is received the switcher retrieves the program from memory and configures itself accordingly Incoming program commands are ignored if the receive channel is set to OF off 2 20 PROGRAM EDIT MODE The PROGRAM EDIT mode is used to create one or more simultaneous source destination connections within the switcher Any of the sixteen sources may be assigned to one or more destinations In practice each destination is assigned to a single source one at a time the entire set can then stored in memory as a program number which can be recalled later Constructing a set of audio paths is a two step process The source destination assignments are assembled in an edit buffer in which they are created auditioned and modified without actually changing the contents of the crosspoint switches or program memory They are then written to the crosspoint switches as a second step Once all of the audio paths are programmed the entire set can then be written to a program memory 2 21 CONSTRUCTING AUDIO PATHS First select the
35. olts Any channel to any other 99 dB 1 kHz 83 dB 20 kHz 56 pin ELCO 8016 with gold plated pins Mates provided Input and output 8 and 16 duplicated single ended on front panel with 12 dB additional gain Connection to front input jack interrupts Corresponding rear panel input Electronically balanced with R F suppression 40k ohms Nominally O dB adjustable over 10 dB range 27 dBu Rejection better than 55 dB typical DC to 20 kHz Phase corrected differential outputs short circuit proof 100 ohms 27 dBu differential 22 dBu single ended Optimum output stage compensation with decoupling of load reactances gives excellent square wave response and stability Full control through EIA 422 485 or MIDI Maximum length with EIA 422 485 1 000 ft Maximum length with MIDI 50 ft Upload download capability of stored data via front panel or remote terminal Eight MIDI commands on any eight MIDI channel numbers are transmitted with each selected program Front panel Enable disable Data also transmitted on EIA 422 485 Mapped MIDI commands stored in non volatile memory 97 130 volts or 200 245 volts AC 50 60 Hz 30 watts Redundant power supply regulators for all supply rails 3 5 x 19 x 8 88 5 x 482 x 203 mm height x width x depth including mated connectors 10 Ibs 5 45 kg net Constructed of 18 ga steel semi gloss baked powder paint Front panel black anodized aluminum with Lexan overlay Printed circuit cards e
36. on Appendix F Remote Control AM 16 B Communication Spec Appendix G Remote Control AM 16 B Data Structures Appendix H Operation at 38 4k Baud 21 22 22 22 AM 16 B Audio Switcher 1 INTRODUCTION OBTAINING THE AM 16 B MAINTENANCE MANUAL Fill out the warranty card in the front of this manual and return it to 360 Systems as soon as possible On receiving it we will send you the maintenance manual which includes schematics and repair tips Registration of your unit also entitles you to free repairs during the first year and will let us contact you in the event new software or support materials become available CAUTION VERIFY THAT THE VOLTAGE MARKING ON THE REAR PANEL IS SUITABLE FOR THE MAINS POWER AVAILABLE IN YOUR AREA OR COUNTRY DO NOT REMOVE OR DEFEAT THE GROUNDING PIN ON THE AC POWER CORD A SERIOUS SHOCK HAZARD CAN RESULT FROM FAILING TO MAKE CONNECTION TO A PROPERLY GROUNDED ELECTRICAL OUTLET DO NOT USE THIS PRODUCT OUT OF DOORS IN RAIN OR IN DAMP OR WET ENVIRONMENTS 360 Systems is in its 20th year of designing unique and useful products for the audio industry We rely on feedback from our customers to help us continue the development of innovative and affordable products Please feel free to address any comments regarding 360 Systems products to us at 360 SYSTEMS Director Of Marketing 5321 Sterling Center Dr Westlake Village CA 91361 2 AM 16 B Audio Switcher AM 16 SERIES SYSTEM The AM
37. oreign service centers freight prepaid in the original or equivalent packaging SHIPPING ADDRESS Freight and mail may be sent to 360 Systems at the following address 360 Systems 5321 Sterling Center Dr Westlake Village CA 91361 The primary telephone number is 818 991 0360 The switchboard is open from 8 00 AM to 5 00 PM California time Faxes may be sent to 818 991 1360 24 hours Send email regarding operation and technical questions to support 360systems com Visit our website at 360systems com AM 16 B Audio Switcher ii TABLE OF CONTENTS THE AM 16 SERIES SYSTEM DESCRIPTION 0 10 The AM 16 B Master Crosspoint Switcher 0 20 The AM 16 E Expander Module 0 30 Remote Control Capabilities 0 31 EIA 422 485 Remote Control 0 32 MIDI Remote Control 0 33 Using MIDI amp EIA 485 422 At The Same Time WWW DPD INSTALLING THE AM 16 B AUDIO SWITCHER 1 10 AC Power 1 11 Power Switch 1 12 Fuse 1 20 Audio Connector Wiring 1 21 Audio Input Connections 1 22 Audio Output Connections 1 23 Balanced vs Single Ended Gain Structure 1 24 Rear Panel Gain Adjustments 1 25 Front Panel Audio Jacks 1 30 Remote Control Ports 1 30 EIA 422 485 Port 1 31 MIDI Input Port 1 32 MIDI Output Port 1 33 Interface Port to AM 16 E Expander Modules 1 40 Configuring Internal Jumper Options 1 41 Mono Stereo Select 1 42 EIA 422 485 or MIDI Select 1 43 EIA 422 485 Termination Jumper 00000 an OO NN USING THE 16 AUDI
38. poxy glass FR 4 have 94 VO flame retardant rating Power transformer approval to U L and CSA standards AC components U L recognized Made in U S A AM 16 B Audio Switcher 25 APPENDIX D CONNECTOR COMPONENTS amp WIRING The AM 16 E is shipped with the following mating connectors 2 pcs ELCO 56 plug P N 00 8016 056 000 701 100 pcs ELCO solder terminal P N 60 8017 0513 000 339 2 pcs ELCO cable clamp P N 30 8026 9601 00 000 The user may wish to procure other ELCO connector elements to better meet his specific requirements ELCO produces a wide variety of terminals and connector shells Some of the more useful ones are described below Wire crimp tail terminal P N 60 8017 0313 Cover die cast alum w large cable clamp P N 30 8016 9828 Cover die cast alum w ex large cable clamp P N 30 8016 9842 Terminal removal tool P N 06 1877 04 Contact crimping tool for crimp terminal only P N 06 7852 01 Product catalogs and sales outlets may be obtained directly from AVX Corporation at Tel 480 539 1496 Fax 480 539 1501 WWW avxcorp com 26 AM 16 B Audio Switcher INPUT CONNECTOR PINOUT J1 Pin Signal n CH 1 Ww CH 10 t CH 1 R CH 10 j CH 1 GND J CH 10 GND y CH 2 S CH 11 CC CH2 M CH 11 HH CH 2 GND C CH 11 GND JJ CH 3 E CH 12 NN CH 3 A CH 12 MM CH 3 GND H CH 12 GND KK CH 4 L CH 13 DD CH 4 F CH 13 LL CH 4 GND B CH 13 GND EE CH5 D CH 14 2 5 K CH 14 F
39. program number to be edited as described in Section 2 11 Then press the MODE SELECT button until the PROGRAM EDIT LED lights The left display window indicates the program number being edited 12 AM 16 B Audio Switcher The right display indicates the DESTINATION to which an input will be assigned Select a destination first using the arrow buttons under that display The center display indicates the SOURCE to be assigned to that destination Use the arrow buttons under the center display to select the source Selection of a source must be done after the destination has been selected It is helpful to think of the Destinations as the locations of data and the Sources as the data in those locations When you want to scan through the audio paths to see how each is programmed you step through the Destinations So far the selected program has only been modified in the Edit Buffer and is neither being heard or stored into memory Press ENTER to hear the new selection The MODIFIED LED will light indicating that the signal paths just programmed are a modification of the selected program The new program may be stored as described below or abandoned by pressing either of the left display arrow buttons If no source is to be connected to a destination the source display can select the symbol which indicates a mute A shortcut to reaching the symbol is to press both arrow buttons under the center display at the same time When a n
40. rogram as you would any other See Section 2 20 Bypass cannot be retrieved for editing purposes through the BYPASS button Editing in bypass mode bypass switch on but another program location selected will allow programs to be recalled edited and stored without changing the state of the Crosspoint switches You can store the current state of the switches into the bP memory press the Bypass switch and then perform normal programming without fear of disturbing the existing patches 2 90 TRANSFERRING RAM DATA VIA MIDI SYSTEM EXCLUSIVE The contents of the non volatile RAM in the AM 16 B can be transferred back and forth to a computer equipped for MIDI System Exclusive data transfers This way an infinite number of stored patches are available to the user or to multiple users A number of inexpensive MIDI data filer programs are available for use on many computers 2 91 SYS EX TRANSFERS TO THE AM 16 B To perform a system exclusive data transfer set up the computer and bring up a system exclusive data transfer program Connect a MIDI cable between the MIDI OUTPUT of the computer and the MIDI IN of the AM 16 B The switcher will recognize system exclusive data as soon as it appears and load it into the RAM No keystrokes are required and it does not matter what operating mode the unit is in for the transfer to begin On completion the switcher will automatically return to PROGRAM SELECT mode It will then recall Program 0 set the cros
41. s ID 04h Device number 04h AM16 B rev 2 00 and greater addr addr Device Address 00h thru 7Fh 08h Command byte 08h Transmitting Program nn Data nn nn 0 to 127 Program or Chain Number 0 to 99 Program No 0 to 99 100 Bypass Program 101 to 127 Chain 1 to Chain 27 data 32 bytes of Program or Chain Data F7h End of System Message 36 AM 16 B Audio Switcher Transmitting ACK NAK Handshake for any protected request transfer FOh System Message 00h 00h 1Ch 360 Systems ID 04h Device number 04h AM16 B rev 2 00 and greater addr addr Device Address 00h thru 7Fh OBh Command byte OBh ACK NAK nn 0 Request Transfer Ok nn 7Eh NAK Data Error nn 7Fh NAK Memory Protect is On F7h End of System Message kkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk System Command Byte Summary kkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk Received Data Transmitted Data 00h Request All Programs Transmitted by requesting unit 01h Receive All Programs 01h Transmitting All Programs 02h Request Edit Buffer Transmitted by requesting unit O3h Receive Edit Buffer 03h Transmitting Edit Buffer 04h Request Remote Store 04h Request Remote Store 05h Request System Global Data Transmitted by requesting unit 06h Receive System Global Data 06h Transmitting System Global Data 07h Request Program nn Transmitted by requesting un
42. spoint switches accordingly and send MIDI program maps 2 92 SYS EX TRANSFERS FROM THE AM 16 B To transfer data from the switcher to a suitably equipped computer connect a MIDI cable from the MIDI OUT of the switcher to the MIDI INPUT of the computer Set up the computer s system exclusive program to receive data Place the switcher in the RECEIVE CHANNEL mode and press ENTER Data will immediately be transferred and the display will read UP during the transfer The switcher s buttons will not respond to commands until the data transfer is complete which takes two to three seconds Sending or receiving system exclusive data does not affect audio during transmission However on completion of a download to the AM 16 B program 00 of the new set will immediately be called AM 16 B Audio Switcher 23 APPENDIX A INITIALIZATION The AM 16 B is shipped from the factory with all of its audio paths MIDI program maps and chains initialized to the following configuration Bypass All outputs muted Program 0 Each input routed to a like numbered output All other programs 1 99 All outputs muted All MIDI program maps MIDI channel off Program number 0 All program chains Program number null Should you wish to clear all programs to this default setting you may do so by applying power while holding down the STORE button CAUTION This will erase all previously stored information in the switcher APPENDIX B S
43. ssociated with a particular program number so that when that program is selected the auxiliary programs are transmitted Enter the PROGRAM SELECT mode and select the program number you wish to create a program map for Then select PROGRAM SEND mode Eight program changes can be created for a single program They can be in any order as all will be transmitted in a single burst The left display indicates which of the eight is currently being assembled NOTE The left display is not a program or a channel it is simply a reference to identify which of the eight program changes is currently under construction Begin with number 1 Use the arrow buttons under the center CHANNEL display to select a channel number 1 through 16 to match the MIDI receiving device or off displayed as OF if no transmission is desired Next select a MIDI program number to be transmitted using the right arrow buttons Any number from 0 through 127 may be used This number corresponds to a program number for the receiving device on that MIDI channel This completes one of the eight auxiliary program changes During programming each program number is immediately transmitted as it is selected This means that the change can be previewed on the receiving device Change the left display to MIDI program two and again select a MIDI channel number and program number for it Repeat this for all eight MIDI programs in the set If less than eight are needed progr
44. the chain ENTER may be pressed at any time to return to step one The left display shows which chain number is selected The center display shows the current CHAIN STEP The right display shows the PROGRAM active for that particular chain step Chains 1 27 may be accessed when the switcher receives program change numbers 101 127 Remote control commands can also be used to increment and decrement chain steps MIDI controller 496 will increment and controller 97 will decrement Refer to Appendix E and F for more information regarding MIDI implementation 2 52 PROGRAMMING A CHAIN Use the MODE SELECT button to enter the PROGRAM CHAIN mode Select any chain number from 1 to 27 and press ENTER Notice that the center display is labeled CHAIN STEP and the right display is labeled PROGRAM 4 The middle display will show CHAIN STEP 1 The right display will show the PROGRAM for this step Use the arrow buttons under the right display to select a program number for CHAIN STEP 1 Any number between 0 and 99 may be chosen as well as the bypass patch bP Use the arrow buttons under the CHAIN STEP display to move to CHAIN STEP 2 Again use the up down arrows under the right hand display to select a PROGRAM for this step Repeat this process to create a chain of up to 32 steps At the end simultaneously depress both arrow buttons under the PROGRAM display The word End will appear in the display and the chain length will be set
45. tively on the Input connector Pins M and S are 11 and 11 respectively on the Output connector See chart on the previous page Pins N U Y c m s are spare grounds and may be used for shield termination Pins x BB are to be left blank AM 16 B Audio Switcher 29 APPENDIX E AM 16 B MIDI SPECIFICATION The AM 16 B uses remote control protocols based on MIDI These have the advantage of being widely used and understood and are easy to develop specialized programs for The MIDI baud rate is 31 25k Baud See Appendix H for information on operation of the switcher at 38 4k baud Note that the protocol is the same at 38 4k baud but that this rate is not compatible with MIDI or the AM16 R Those planning complex control schemes for the AM 16 B may find it helpful to obtain complete information on MIDI from the Midi Manufacturers Association There are ordering instructions on their website at www midi org 30 AM 16 B Audio Switcher APPENDIX F REMOTE CONTROL AM 16 B COMMUNICATION SPECIFICATION kkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk Received Data Channel Messages kkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk Program Change Change current program status 1100nnnn nnnn O to OFh Channel 1 to 16 Oppppppp ppppppp 0 to 127 0 to 99 Patch No 0 to 99 100 Bypass Program 101 to 127 Chain 1 to Chain 27 Chain Increment Increment current chain step status 1011nnnn
46. to the number of steps already programmed When advancing through a chain the last entry will wrap around to the first one when End is reached In chains using all 32 steps it is not necessary to enter End Step 1 will always follow step 32 AM 16 B Audio Switcher 19 2 53 STORING A CHAIN Press STORE once to enter the store pending mode if the chain number appearing in the left display is suitable press STORE again to write the chain to memory If not suitable use the arrow buttons under the left display to select another number between 1 and 27 Press STORE a second time to write the contents to memory As with other modes a STORE decision must be made within four 4 seconds or the switcher will exit from the store pending mode 2 54 EDITING A CHAIN Editing a chain is the same as creating one from scratch except that old material is edited to become new material The End marker may also be placed differently First select a chain while in PROGRAM CHAIN mode The chain will not become active until ENTER is pressed Until that time the chain can be edited by changing the program numbers associated with each step The MODIFIED LED will be on indicating a recall pending mode If changes are to be dumped press ENTER and the original program will again be established If the program is to be saved press STORE once to enter the STORE PENDING mode If the chain number displayed is suitable press STORE again to save the edite
47. umber of simultaneous audio paths are to be programmed at once itis faster to do it as follows Select 1st destination Select 1st source Select 2nd destination Select 2nd source Select last destination Select last source Press ENTER MODIFIED LED comes on or STORE Perform STORE operation It is always possible to make additional modifications to a program Simply select an additional destination a source to go with it and press ENTER to audition it Note that it isn t necessary to audition new audio paths with the ENTER button if there is no question about their being correct press the STORE command to write them to memory at once 2 22 MULTIPLE INPUT ASSIGNMENTS An input can drive as many as sixteen outputs at once each line is individually buffered so there is no increase in loading on any input AM 16 B Audio Switcher 13 Audio mults can be created by assigning a single input to many outputs at once For example Input 41 can be assigned to Outputs 1 2 and 3 INPUT NUMBER OUTPUT NUMBER 1 1 1 2 1 3 2 23 STORING EDITED PATHS AS A PROGRAM NUMBER The entire set of sixteen audio paths can now be stored in memory Pressing the STORE button once will place the switcher in the PROGRAM SELECT mode Notice that the STORE PENDING LED is illuminated This means that a STORE operation can happen if STORE is pressed again It has not yet happened but during the STORE PENDING interval a new program number may be select
48. usive Message 00h 00h 1Ch 360 Systems ID 04h Device number 04h AM16 B rev 2 00 and greater addr addr Device Address 00h thru 7Fh Set in Receive Channel Mode in far right display OAh Command byte OAh Transmitting Crosspoint Update data 16 Bytes of Crosspoint Data byte 0 source for Dest 1 00h thru 10h 00h OFF 01h source 1 10h source 16 byte 15 source for Dest 16 F7h End of System Message Returns ACK NAK Receive ACK NAK Handshake for any protected request transfer FOh System Message 00h 00h 1Ch 360 Systems ID 04h Device number 04h AM16 B rev 2 00 and greater addr addr Device Address 00h thru 7Fh Set in Receive Channel Mode in far right display OBh Command byte OBh ACK NAK nn 0 ACK Request Transfer Ok nn 7Eh NAK Data Error nn 7Fh NAK Memory Protect is On F7h End of System Message kkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk Transmitted Data System Messages kkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk Transmitting All Patches FOh System Message 00h 00h 1Ch 360 Systems ID 04h Device number 04h AM16 B rev 2 00 and greater addr addr Device Address 00h thru 7Fh Set in Receive Channel Mode in far right display Oih Command byte 01h Transmitting All Programs data 4096 bytes of data F7h End of System Message AM 16 B Audio Switcher 35 Transmitting Edit Buffer FOh System Message 00h 00h 1Ch 360 Systems ID
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