User manual B&K DT-1

[. . . ] AC-3 RF LED Indicates that a RF Dolby Digital signal is present at the DT-1's AC3 RF input and the DT-1 is working. Indicates that a digital PCM signal is present at the DT-1's COAX input and the DT-1 is working. 2. TOSLINK LED - Indicates that a digital optical signal is present at the DT-1's TOSLINK input and the DT-1 is working. This LED will also stay lit when no signal is present at any input. Page 3 Rear panel view The DT-1's back panel is pictured here. [. . . ] When a signal is present at the TOSLINK INPUT, the DT-1 will covert the digital optical to digital coax. Page 5 The TOSLINK INPUT is also the default input. The DT-1 will always switch back to this input when the system is idle and power is still available to the DT-1. AC-3 demodulator only mode The DT-1 may also be put in AC-3 RF demodulator only mode. Use the AC-3 demodulator only mode if you will not be using the COAX or TOSLINK inputs. To configure this mode simply remove the top cover of the DT-1 and change the jumper position to disable the auto select operation of the DT-1. See figure below. FIGURE 1 Place jumper here for AC-3 Demodulator operation only. DEFAULT POSITION FROM FACTORY Place jumper here for auto selector operation. Mode change To change the DT-1's mode of operation, perform the following instructions. d REMOVE THE POWER CORD BEFORE OPENING UNIT! Remove the 4 screws holding the top cover on. Orient the DT-1 so the front is facing you. It will be near the back of the DT-1 and to the left of the power transformer. Use a pair of pliers or tweezers to lift straight up on the jumper, removing it from the pins. To put the DT-1 in AC-3 demodulator only mode, place the jumper on the two pins marked "JUMP FOR AC-3". These are the two pins farthest from the transformer. Page 6 To put the DT-1 in auto select mode (factory default mode), move the jumper out of the location marked "JUMP FOR AC-3" and onto the two pins closest to the transformer. Reinstall the top cover with the four screws you removed earlier. DT-1 Connections The DT-1 is designed to operate with two inputs connected to it (unless it is in AC-3 demodulator only mode). These inputs should both come from the same laserdisc player. When a laserdisc player has both TOSLINK and COAX PCM outputs, connect only one to the DT-1. The PCM digital outputs will carry the same information. Connecting both will be redundant. Dolby Digital RF connection Connect a cable from the laserdisc players Dolby Digital RF output to the DT-1's AC-3 RF INPUT. Coax digital connection Connect a cable from the laserdisc players digital PCM output to the DT-1's COAX INPUT. Toslink digital connection Connect a TOSLINK cable from the laserdisc players TOSLINK digital output to the DT-1's TOSLINK INPUT. Main output connection Connect a cable from the DT-1's MAIN OUTPUT to any one of the AVP's digital inputs (DVD/VLD, CD, TUNER, V1, V2, TV-V3). The empty input may be used for another digital source. Remember the priority for the switching associated with the DT-1. [. . . ] No agent, representative, dealer or employee of B&K has the authority to increase or alter the obligations or terms of this warranty. B&K Components Ltd. RETURNING EQUIPMENT No equipment may be returned to B&K Components Ltd. Should you find it necessary to return equipment to B&K, for any reason, a RETURN AUTHORIZATION (RA) number must be issued by B&K in respect of the equipment being returned. You may request an RA number by calling B&K at the numbers below. [. . . ]