RME Audio M-16 AD, User Manual

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User’s Guide M-32 AD
© RME
10. Analog Inputs
The M-32 AD’s rear has 32 balanced Line inputs, provided by 1/4"
TRS and four 25-pin D-sub connectors. Both are internally con-
nected, so can not be used at the same time. The electronic input
stage is built in a servo balanced design which handles unbalanced
(mono jacks) and balanced (XLR, stereo jacks) signals correctly,
automatically adjusting the level reference.
When using unbalanced cables with XLR or TRS connectors be sure
to connect pin 3 (- or ring) to 1 (ground). Otherwise noise may occur,
caused by the unconnected negative input of the balanced input.
The 25-pin D-sub connector follows the pinout known from devices
manufactured by Tascam (pinout see chapter 15.9). Your local
dealer will supply analog breakout multicores D-sub to XLR in Tas-
cam pinout in different lengths.
The M-32 AD uses a completely symmetrical signal path (including
limiter) that guarantees an exceptional sound quality, outstanding
low distortion and highest Signal to Noise ratio in all level settings.
One of the main issues when working with an AD-converter is to maintain the full dynamic
range within the best operating level. Therefore the M-32 AD internally uses hi-quality electronic
switches, which introduce no additional noise or distortion to the audio path. The key ANALOG
INPUT allows for a perfect adaptation of all 32 channels to the most often used studio levels.
Each analog input has its own 5-segment level meter, so every channel can be checked for
input signal and overloads easily. The red LED OVR lights up 0.2 dB before full scale level (-0.2
dBFS).
The M-32 AD uses the following level references:
Reference 0 dBFS @ Headroom @ +4 dBu Other RME devices
+24 +24 dBu 20 dB -
+19 +19 dBu 15 dB LoGain
+13 +13 dBu 9 dB +4 dBu
Set to +24 dBu the M-32 AD is compatible to SMPTE (+24 dBu @ 0 dBFS, +4 dBu with 20 dB
of headroom).