DIGIBOXES USER GUIDE December 2003 Rev 1
Digibox Range Model Page AES-S3 3 way AES splitter……………………….. 1 AES-D2 2 way AES channel divider……………... 3 AES-SPD AES - S/PDIF converter………………… 5 SPD-S4 4 way S/PDIF splitter …………………… 7 CLK-D4 4 way Word / Super Clock distributor.… 9 CLK-C4 4 way Word / Super Clock converter….. 11 CLK-G4 Word / Super Clock generator ………....
AES-S3 (AES splitter): Why use an AES/EBU splitter: Because of the high frequency content of an AES/EBU digital signal, the connection between a transmitter and receiver needs to be that of a transmission line. This means the cable must have a characteristic impedance equal to the output impedance of the transmitter and the input impedance of the receiver to avoid reflections on the line.
AES-S3 Connections Input One AES/EBU Outputs Three AES/EBU XLR Female XLR Male Specifications One Transformer balanced input on XLR Female Input Impedance = 110 Ohms Three Transformer balanced outputs on XLR Male Output impedance = 110 Ohms Sample rate : Up to 96KHz Jitter : < 1ns 2
AES-D2 (AES/EBU channel divider): Why use an AES/EBU channel divider: The AES/EBU digital signal contains two audio channels (left & right, also called A & B or 1 & 2) on the same transmission line. In some applications you may need a mono signal. The AES-D2 enables you to extract a mono signal from an AES/EBU stereo signal (A or B) and send it to two XLR outputs. The AES-D2 also allows you to select each output to have any combination of input signal.
AES-D2 Connections Input One AES/EBU Outputs Two AES/EBU XLR Female XLR Male Specifications One Transformer balanced AES/EBU input on XLR-F. Input impedance: 110 Ohms Two buffered transformer balanced AES/EBU outputs on XLR-M. Output impedance: 110 Ohms Channel Selection on each output: AA, AB, BB, BA Sample Rate: up to 96 kHz. Jitter: < 8.
AES-SPD (AES/EBU S/PDIF converter): Why use an AES/EBU S/PDIF converter: Often, it is necessary to connect a professional device (AES/EBU) with some semi-pro or home studio equipment (S/PDIF) or vice versa. The AES-SPD solves this problem. Also all outputs are available simultaneously. Using the AES-SPD: One switch on the front panel selects between AES/EBU and S/PDIF. When in S/PDIF mode another switch selects between coax and optical.
AES-SPD Connections Inputs One AES/EBU XLR Female One Coax S/PDIF Phono (RCA) One Optical S/PDIF TOS-Link Outputs One AES/EBU XLR Male Two Coax S/PDIF Phono (RCA) Two Optical S/PDIF TOS-Link Specifications: AES transformer balanced input on XLR-F AES Input impedance: 110 Ohms One buffered transformer balanced AES/EBU output on XLR-M AES Output impedance: 110 Ohms S/PDIF input on Phono (coax) and TOS-Link (optical) connectors S/PDIF input impedance (coax): 75 Ohms.
SPD-S4 (S/PDIF splitter): Why use an S/PDIF splitter: Because of the high frequency content of an S/PDIF digital signal, the connection between a transmitter and receiver needs to be that of a transmission line. This means the cable must have a characteristic impedance equal to the output impedance of the transmitter and the input impedance of the receiver to avoid reflections in the line.
Connections Inputs One Coax S/PDIF Phono (RCA) One Optical S/PDIF TOS-Link Outputs Four Coax S/PDIF Phono (RCA) Three Optical S/PDIF TOS-Link Specifications One S/PDIF input on Phono (coaxial) Input impedance: 75 ohms One TOS-Link input (optical) connector Four buffered coaxial outputs on phono Output impedance: 75 ohms Three TOS-Link outputs Sample Rate: up to 96 kHz Jitter: < 3.0 ns.
CLK-D4 (clock distributor): Why use a clock distributor: Because of the high frequency content of a Word Clock signal (even higher with Super Clock), the connection between a transmitter and receiver needs to be that of a transmission line. This means the cable must have a characteristic impedance equal to the output impedance of the transmitter and the input impedance of the receiver to avoid reflections in the line.
Connections Inputs One Clock input BNC Four Clock outputs BNC Specifications: Input on BNC. Input impedance : 75 ohms or open Buffered output on BNC. Output impedance : 75 ohms Jitter: < 0.
CLK-C4 (clock converter): Why use a clock converter: When working in a studio or on a project where both Word-Clock and Super-Clock equipment is being used it will be necessary to synchronise the two standards. The CLK-C4 solves this problem by its ability to automatically detect and lock onto whichever standard clock is connected to its input and by having two 'pairs' of outputs which can be selected to be either Word-Clock or Super-Clock.
Connections Inputs One Clock input BNC Four Clock outputs BNC Specifications: Input impedance : 75 ohms or un-terminated Output impedance : 75 ohms LED indication of Word-Clock or Super-Clock input LED indication of Word-Clock to Super-Clock lock Jitter: < 0.
CLK-G4 (clock generator) : Why use a clock generator: A clock generator is used to synchronise equipment in a digital audio environment. Most master clock generators on the market also synchronise with video for post production, this can make a master clock very expensive. For applications which do not need a video lock, the CLK-G4 offers a very stable and precise master clock at an affordable price. Also, each pair of outputs can independently deliver WordClock or Super-Clock.
Connections Output A Two Clock outputs BNC Output B Two Clock outputs BNC Specifications: Four buffered outputs on BNC Output impedance : 75 ohms Sample Rate : 44.1 / 48 / 88.2 / 96 kHz Precision & stability : +/- 3.5 ppm Jitter : < 0.
