28 TASCAM HD-R17–Parallel InterfaceThe parallel port (25-pin D-sub connector on the rearpanel) can be used to remotely control the HD-R1’splayback using logic signals. By default, the inputsignals are active low (normally high). Each input pinhas a built-in 10 kΩ pull-up resistor to 3.3V. Closinga switch between an input pin and ground (pins 23and 24) normally activates that input by pullingit low. If needed, the polarity of the input signalscan be changed using Main Menu ˘ SystemSettings ˘ Parallel Port ˘ InputPolarity.The HD-R1’s busy status is communicated usinginternal, solid-state relays to make or break aconnection between two pins on the parallel port.There are two busy relays. They can be configured asnormally-open or normally-closed, and may indicatea variety of conditions depending on the settingsfound at Main Menu ˘ System Settings ˘Parallel Port. These include indicating whenthe HD-R1 status is Playback, Recording,Finished, Ducking, CF Door or MediaFull.A switch connection applied between pin 17 andground (pins 23 and 24) is equivalent to pressing theSTOP key with the default “Active Low” parallel portpolarity.External play has three modes: Direct Play,Binary Play, and Program Play. Thismode is set using Main Menu ˘ SystemSettings ˘ Parallel Port ˘Parallel Mode. Each mode interprets the inputsignals differently.Pin Direct Play Binary Play Program Play1 Controls track 1 Bit 0 Unused input2 Controls track 2 Bit 1 Unused input3 Controls track 3 Bit 2 Unused input4 Controls track 4 Bit 3 Unused input5 Controls track 5 Bit 4 Unused input6 Controls track 6 Bit 5 Unused input7 Controls track 7 Bit 6 Unused input8 Controls track 8 Bit 7 Unused input9 Controls track 9 Bit 8 Unused input10 Controls track 10 Bit 9 Unused input11 Controls track 11 Unused input Unused input12 Controls track 12 Unused input Change to previous folder/playlist13 Controls track 13 Unused input PLAY14 Controls track 14 Unused input SKIP ≤15 Controls track 15 Unused input SKIP μ16 Controls track 16 Unused input Change to next folder/playlist17 STOP STOP STOP18 RECORD RECORD RECORD19 BUSY1a BUSY1a BUSY1a20 BUSY1b BUSY1b BUSY1b21 BUSY2a BUSY2a BUSY2a22 BUSY2b BUSY2b BUSY2b23 GROUND GROUND GROUND24 GROUND GROUND GROUND25 DC5V DC5V DC5VParallel Port Pinout