Slithers: 16 Channel mic/line

16 Channel mic/line modular I/O expansion card
This slither card can be used as an input device in both the PCM-H64 expansion rack and the LRX2 location recorder. In microphone mode, each channel can provide up to 65dB of mic gain individually adjustable in 1dB steps to allow for careful trimming of mic signals. Phantom power is available on each input and can be switched individually. Alternatively, any input can be switch to line mode. Each input is then fed to high quality 192k 24bit analogue to digital converters.¹

The card plugs directly into the PCM-H64 or LRX2 system and the interconnections are made available on a 25way female D-type. The card can optionally be supplied with two short adapter looms made from high quality microphone cable which convert the D-types to female XLR connectors.

¹ Please note that 192kHz operation is not currently fully supported in the LRX2.

SPECIFICATIONS
16 channels of electronically balanced analogue input on D-type 25 way connector. Break-out cables used to break signals out to XLR.
Sample Rates	32kHz to 96kHz
Conversion	24-bit 64x over-sampling ΔΣ
Connector	25 way D-type
Input impedance	>5kΩ differential
Frequency Response (44.1kHz sample rate)	12Hz - 21kHz, ±0.1dB
Frequency Response (96kHz sample rate)	12Hz - 42kHz, ±0.1dB
Signal to Noise	-107dB

Specifications refer to V1.1 and are subject to amendment.

SPECIFICATIONS
Microphone Mode
Max level for 0dBFS	+18dBu
EIN	-128dBu (22Hz-22kHz, 65dB Gain, 150Ω source, no weighting)
THD+N Relative	< -91dB (0.0028%) 1kHz, max input, 22Hz - 22kHz bandwidth, unweighted, 30dB Gain
Phantom Power	+48V ±2V, switchable per input
Cross-talk (worst case)	-56dB (1kHz, +8dBu in one channel, other channel measured with 65dB gain)
Line Mode
THD+N Relative	< -82dB (0.008%) 1kHz, max input, 22Hz - 22kHz bandwidth, unweighted, 30dB Gain
CMRR	64dB (1kHz, worst case)
Cross-talk	-105dB (1kHz, channel 1 to 2)