User manual THE T.AMP E-800

[. . . ] Opening the chassis for any reason will void the manufacturer's warranty. If liquid is spilled on the unit, shut it off immediately and take it to a dealer for service. Disconnect the unit during storms to prevent damage. DO NOT BLOCK ANY OF THE VENTILATION OPENINGS. DO NOT INSTALL NEAR ANY HEAT SOURCES SUCH AS RADIATORS, HEAT REGISTERS, STOVES; OR OTHER APPARATUS (INCLUDING AMPLIFIERS) THAT PRODUCE HEAT. [. . . ] Ambient temperatures should not exceed 1130F (450C) when equipment is in use. Although the unit is shielded against radio frequency and electromagnetic interference, extremely high fields of RF and EMI should be avoided where possible. · Make audio connections via XLR, 1/4" TRS, or 1/4" TS plugs. With the flexibility of the E-800, various connection options are available. For input connection, use the XLR Microphone, 1/4" line or 1/4" instrument (front panel) inputs. For analog output connections, use either XLR or 1/4" Line output. The use of more than one connector at a time for the output section, could unbalance balanced lines, cause phase cancellations, short a conductor to ground, or cause damage to other equipment connected to the E-800. Connect the AC power cord to the AC power receptacle on the back of the unit. Route the AC power cord to a convenient power outlet away from audio lines. The unit may be turned on and off from the rear panel power switch or from a master equipment power switch. 2. 2 Connection to a Mixing Console 1). Connect your mic cable to the Mic input of the E-800 NOTE: If you are using a mic with a separate power supply, such as a tube microphone, make sure that you are not sending two sources of +48V phantom power to the mic. The LED will not be lit for 44. 1 kHz, GREEN for 48 kHz, RED for 88. 2 kHz and YELLOW for 96 kHz. Word Length Switch Selects output wordlength of 16, 20, or 24 bits output resolution. The LED will not be lit for 16 bit, GREEN for 20 bit, and RED for 24 bit. Output Format Selects either the AES/EBU or S/PDIF digital output format. The LED will be green for AES/EBU and red for S/PDIF. 3. 2 Digital Output Rear Panel Connections ® 12 E-800 User Manual E-800 AES/EBU Digital Connector Digital Applications Section 3 Th e 3 7 6 p r o v id e s A E S/E B U d ig ita l o u tp u t fo r m a ttin g th r o u g h th e X L R c o n n e c to r . B e s u r e to u s e s h o r t le n g th s o f 1 1 0 d ig ita l c a b le s r a th e r th a n s ta n d a r d X L R to X L R c a b le s . Us in g th e c o r r e c t c a b le s w ill p r e v e n t d ig ita l d r o p o u ts a n d o th e r in te r c o n n e c tio n p r o b le m s . S/PDIF Digital Connector Th e 3 7 6 p r o v id e s S/P D IF d ig ita l o u tp u t fo r m a ttin g th r o u g h th e R C A c o a x ia l c o n n e c to r . B e s u r e to u s e s h o r t le n g th s o f 7 5 d ig ita l c a b le s o r 7 5 v id e o c a b le s r a th e r th a n s ta n d a r d a u d io R C A to R C A c a b le s . Us in g th e c o r r e c t c a b le s w ill p r e v e n t d ig ita l d r o p o u ts a n d o th e r in te r c o n n e c tio n p r o b le m s . NOTE: Although digital information is coming out of both XLR and RCA jacks simultaneously, the correct format will only appear at the output for the format type selected. For example, if you have AES/EBU format selected, an AES/EBU formatted signal will appear at the output of both the XLR and the RCA connector. Or, if you have S/PDIF format selected, an S/PDIF formatted signal will appear at the output of both the RCA and XLR connectors. Sync In and Out Connectors BNC connectors are provided for both word clock in and out functions. The E-800's clock chips are dbx custom VCXO chips, designed for low-jitter performance. You may use the E-800 as a master clock source, having other equipment slave to the E-800, or you may slave the E-800's clock to any other word clock source. 3. 3 Sync Input Sample Rate Selection When connecting an incoming or master device to the sync input of the E-800, the E-800 will automatically lock to the sample rate of the master device. [. . . ] This seems reasonable until you realize that 1/2 of the full-scale input is only 6 dB below full-scale!So half of the codes are used to represent only the top 6 dB of signal information, while the other half are used to represent the remaining 80 to 110 dB of signal information, depending on the quality of the converter. It seems not only reasonable, but also desirable, to utilize the increased signal resolution afforded by this density of digital codes to represent more input dynamic range in this region. Another advantage of the logarithmic mapping of our dbx Type IVTM Conversion System is that it preserves the highfrequency detail of the signal in the overload region. [. . . ]