PCM4 Technical Specifications
| DIGITAL I/O | |
| Each PCM4 has 2 x stereo digital inputs and 2 x stereo digital outputs on 15 pin D-sub connector with supplied XLR break-out leads. | |
| DIGITAL INPUT | |
| Protocols | S/PDIF (consumer, IEC958) or AES3 (professional AES3-1992, AES/EBU) |
| Connector | 15 pin D-sub, with supplied 2 x XLR-F break-out lead. |
| Connector pin-out | XLR-F wired pin 1: Ground Pin 2: positive, non-inverting, "hot" Pin 3: negative, inverting, "cold" |
| Input levels | 500mV to 10Vp-p at all sample rates |
| Input impedance | 110Ω balanced |
| Sample Rates | 32kHz to 96kHz ±10% |
| DIGITAL OUTPUT | |
| Protocols | S/PDIF (consumer, IEC958) or AES3 (professional AES3-1992, AES/EBU) (software selectable) |
| Connector | 15 pin D-sub, with supplied 2 x XLR-M break-out lead. |
| Connector pin-out | XLR-M wired pin 1: Ground Pin 2: positive, non-inverting, "hot" Pin 3: negative, inverting, "cold" |
| Output levels | 10V p-p (5V p-p when terminated in 110Ω |
| Input impedance | 110Ω ±10% |
| Sample Rates | 32kHz to 96kHz ±10% |
| Data Jitter | <20ns p-p |
| ANALOGUE INPUTS | |
| 4 channels of balanced analogue input are provided on D-sub 15 way connector with XLR-F break-out lead supplied. | |
| Sample Rates | 32kHz to 96kHz |
| Conversion | 24-bit 64x over-sampling ΔΣ |
| ANALOGUE LINE INPUTS | |
| Connector | D-sub 15 way connector with XLR-F break-out lead supplied. |
| Nominal level for peak digital audio (sine) | +18dBu (+12dBu via BoB800 or BoB800b break-out boxes) |
| Input impedance | >10kΩ |
| Frequency Response | 20Hz - 20kHz, ±0.5dB, AC coupled |
| Total Distortion + Noise (THD+N) | < -90dB (0.0032%) at 1kHz, peak level, 20Hz-20kHz unweighted |
| CMRR | > 50dB at 50Hz |
| ANALOGUE OUTPUTS | |
| 4 channels of balanced audio are provided on 15 pin D-sub connectors with XLR-M break-out leads supplied. | |
| ANALOGUE LINE OUTPUTS | |
| Connector | D-sub 15 way connector with XLR-M break-out lead supplied. |
| Nominal level from peak digital audio (sine) | +18dBu (+12dBu via BoB800 or BoB800b break-out boxes) |
| Output impedance | <25Ω |
| Frequency Response | 20Hz - 20kHz, ±0.5dB, DC coupled |
| Total Distortion + Noise (THD+N) | < -90dB (0.0032%) at 1kHz, peak level, 20Hz-20kHz unweighted |
| PHYSICAL | |
| Turnkey system supplied in 4u 19" rack-mounting chassis. | |
| Dimensions | |
| Height | 4u 180mm |
| Width | 485mm |
| Depth | 550mm |
| Weight | <20kg |
| POWER REQUIREMENTS | |
| Voltage | 100 - 240V AC 50-60Hz |
| Power Consumption | <300W steady state |
| Fuse | 5A (T) |
| Compliance | |
| CE marked | Yes |
| Conforms to the following standards: | EN50081-1 (EN55022);1995 EN50082-1 (EC 801-2,3,4); 1992 |
| LV and EMC Directives: | 73/23/EEC 89/336/EEC |
Specifications subject to amendment. Figures do not necessarily apply for minus 0.1%, chase lock or varispeed rates.
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