User manual BIAMP EQ28X RS-232

[. . . ] An ASCII code chart is included with this document for your convenience. When an 8-bit binary data value is being transmitted over a serial data communications link, it is a common practice to transmit the byte as two "ASCII-hex" characters - one character represents the most significant nibble of the data value and the other character represents the least significant nibble (a nibble is 4-bits; half of a byte). Each ASCII-hex character is in the range of '0' thru '9' or 'A' thru 'F' (from the ASCII code chart, 0x30 thru 0x39 or 0x41 thru 0x46). For example, the hexadecimal equivalent of the decimal number 61 is 0x3D. [. . . ] These button codes are also summarized on the ASCII code chart provided at the end of this manual. The remote control buttons on the standard Biamp transmitter are numbered from left to right going from bottom to top with the lower left-hand button being button number 1. When the EQ282/8 is shipped from the factory, all remote control button definitions are set to "nop" (no operation) - in order for Control Button Emulation to be useful, you must first use Biamp's PC software to create some button definitions which actually do something (recall preset curves, for example). Control Button Emulation ASCII Codes button 1 button 2 button 3 button 4 button 5 button 6 button 7 button 8 button 9 button 10 button 11 button 12 button 13 button 14 'B' 'C' 'D' 'E' 'F' 'G' 'H' 'I' 'J' 'K' 'L' 'M' 'N' 'O' (0x42) (0x43) (0x44) (0x45) (0x46) (0x47) (0x48) (0x49) (0x4A) (0x4B) (0x4C) (0x4D) (0x4E) (0x4F) button 15 button 16 button 17 button 18 button 19 button 20 button 21 button 22 button 23 button 24 button 25 button 26 button 27 button 28 'P' (0x50) 'Q' (0x51) 'R' (0x52) 'S' (0x53) 'T' (0x54) 'U' (0x55) 'V' (0x56) 'W' (0x57) 'X' (0x58) 'Y' (0x59) 'Z' (0x5A) '[' (0x5B) '\' (0x5C) ']' (0x5D) button 29 button 30 button 31 button 32 button 33 button 34 button 35 button 36 button 37 button 38 button 39 button 40 '^' '_' '`' 'b' 'c' 'd' 'e' 'f' 'g' 'h' 'i' 'j' (0x5E) (0x5F) (0x60) (0x62) (0x63) (0x64) (0x65) (0x66) (0x67) (0x68) (0x69) (0x6A) 21-Jul-97 Computer Control of the Advantage EQ282/8, EQ281/8, SMS200 page 3 Device Select Prefix Characters When using Advanced Computer Control, up to sixty-four Advantage EQ282/8s may be linked together and individually controlled by the computer (a rear-panel dip-switch is used to set a unique device number to each unit). When using Control Button Emulation, a limited subset of device addressing may be performed, which allows individual control of up to four Advantage EQ282/8s (with device numbers 1 thru 4). This is accomplished by transmitting a device select prefix code immediately prior to each control button ASCII character code. The device select prefix code is inspected by each device to determine whether or not the device should react to the button code which immediately follows. If a button code is not immediately preceded by a device select prefix character, then all Advantage EQ282/8s in the system will react to that button code. The following table summarizes the ASCII characters to use for selecting various devices. This information is also summarized in the ASCII code chart provided at the end of this manual. Device Select Prefix Codes select device 1 select device 2 select devices 1 & 2 select device 3 select devices 1 & 3 select devices 2 & 3 select devices 1 & 2 & 3 select device 4 select devices 1 & 4 select devices 2 & 4 select devices 1 & 2 & 4 select devices 3 & 4 select devices 1 & 3 & 4 select devices 2 & 3 & 4 select devices 1 & 2 & 3 & 4 'l' 'm' 'n' 'o' 'p' 'q' 'r' 's' 't' 'u' 'v' 'w' 'x' 'y' 'z' (0x6C) (0x6D) (0x6E) (0x6F) (0x70) (0X71) (0x72) (0x73) (0x74) (0x75) (0x76) (0x77) (0x78) (0x79) (0x7A) page 4 Computer Control of the Advantage EQ282/8, EQ281/8, SMS200 21-Jul-97 Advanced Computer Control The Advanced Computer Control command set includes commands which allow the Advantage EQ282/8 to return information about the system to the computer, unlike Control Button Emulation which is basically a one-way control mechanism. The following list summarizes the commands available using Advanced Computer Control, including the ASCII command character associated with each command: ) * / recall-preset get-status get-version recall a preset equalization curve retrieve the status indicating which presets are currently selected retrieve the model information and firmware version date Each Advanced Computer Control command requires at least two parameter bytes (four pseudo-hex characters) to be sent prior to the command character. Each command will be explained in detail on the following pages. Some of the commands cause the Advantage EQ282/8 to return information to the computer. For each string of information returned to the computer, the EQ282/8 terminates the string by transmitting the ASCII carriage return character (0x0D represented in this document as ). As mentioned earlier, the Advantage EQ282/8 will echo all characters it receives, regardless of whether or not the characters are valid commands or parameters. Characters greater than 0x7F are reserved and should not be transmitted by the computer. The EQ282/8 utilizes a subset of the standard ASCII character set. The following characters have meaning to the Advantage EQ282/8: character ASCII control characters ASCII SPACE character !@ A B thru ` a b thru j k thru z { thru DEL 0x80 thru 0xFF hexadecimal (0x00 - 0x1F) (0x20) (0x21 - 0x2F) (0x30 - 0x3F) (0x40) (0x41) (0x42 - 0x60) (0x61) (0x62 - 0x6A) (0x6B - 0x7A) (0x7B - 0x7F) (0x80 - 0xFF) operation no operation no operation Advanced Computer Control commands pseudo-hex parameters for Advanced Computer Control commands Control Button Emulation Repeat Code no operation Control Button Emulation commands (buttons 01 - 31) no operation Control Button Emulation commands (buttons 32 - 40) Control Button Emulation Device Select Prefix commands no operation RESERVED An ASCII code chart showing all Advantage EQ282/8 commands and codes is provided at the end of this document for your convenience. Each Advantage EQ282/8's device number is assigned using rear-panel dip-switches. Except for broadcast commands, any particular EQ282/8 will respond to an Advanced Computer Control command only if bit 7 of the Device Type Bitmask is a `1' and the Device Number parameter matches its dip-switch settings. page 6 Computer Control of the Advantage EQ282/8, EQ281/8, SMS200 21-Jul-97 ) recall-preset Description: The recall-preset command causes the Advantage EQ282/8 to recall a preset equalization curve for one or both channels. Each preset eq curve includes the high-pass filter corner frequency setting, the gain settings for all 28 1/3-octave filter bands, the low-pass filter corner frequency setting, and the signal level control setting. For the SMS200, each preset eq curve also includes the pink-noise level control setting. Syntax of Command: ab80dd) where: a = b = 80 dd ) Syntax of Response: = = = Preset for channel 2: 0 = NOP (no operation), 1 - 8 = recall preset 1 - 8, > = recall prior channel 2 preset Preset for channel 1: 0 = NOP (no operation), 1 - 8 = recall preset 1 - 8, > = recall prior channel 1 preset Device Type Bitmask (pseudo-hex) Device Number (pseudo-hex) recall-preset command character (0x29) (no response) Example: 578001) This example causes Advantage EQ282/8 number 1 to recall preset eq curve 5 for channel 2 and recall preset eq curve 7 for channel 1. Comments: For the Avantage EQ281/8 and SMS200 (which are both single-channel devices) always specify `0' (no operation) for channel 2. [. . . ] hex pseudo 0x80 80 0x81 81 0x82 82 0x83 83 0x84 84 0x85 85 0x86 86 0x87 87 0x88 88 0x89 89 0x8a 8: 0x8b 8; 0x8c 8< 0x8d 8= 0x8e 8> 0x8f 8?0x90 90 0x91 91 0x92 92 0x93 93 0x94 94 0x95 95 0x96 96 0x97 97 0x98 98 0x99 99 0x9a 9: 0x9b 9; 0x9c 9< 0x9d 9= 0x9e 9> 0x9f 9?0xa0 :0 0xa1 :1 0xa2 :2 0xa3 :3 0xa4 :4 0xa5 :5 0xa6 :6 0xa7 :7 0xa8 :8 0xa9 :9 0xaa :: 0xab :; 0xac :< 0xad := 0xae :> 0xaf :?0xb0 ;0 0xb1 ;1 0xb2 ;2 0xb3 ;3 0xb4 ;4 0xb5 ;5 0xb6 ;6 0xb7 ;7 0xb8 ;8 0xb9 ;9 0xba ;: 0xbb ;; 0xbc ;< 0xbd ;= 0xbe ;> 0xbf ;? [. . . ]