User Manual
User's Guide Fireface UCX © RME
83
DA, Line Out 1-6, rear 
•  Resolution: 24 bit 
•  Dynamic range (DR): 111 dB, 113 dBA @ 44.1 kHz (unmuted) 
•  Frequency response @ 44.1 kHz, -0.1 dB: 8 Hz – 20.4 kHz 
•  Frequency response @ 96 kHz, -0.5 dB: 6 Hz – 45 kHz 
•  Frequency response @ 192 kHz, -1 dB: 5 Hz - 90 kHz 
•  THD: -100 dB, < 0.001 % 
•  THD+N: -96 dB, < 0.0015 % 
•  Channel separation: > 110 dB 
•  Maximum output level: +19 dBu 
•  Output: 6.3 mm TRS jack, servo-balanced 
•  Output impedance: 75 Ohm 
•  Output level switchable Hi Gain, +4 dBu, -10 dBV 
•  Output level at 0 dBFS @ Hi Gain: +19 dBu 
•  Output level at 0 dBFS @ +4 dBu: +13 dBu 
•  Output level at 0 dBFS @ -10 dBV: +2 dBV 
DA – Phones, 7/8, front 
•  as DA, but: 
•  Output: 6.3 mm TRS jack, unbalanced 
•  Output impedance: 30 Ohm 
31.2 MIDI 
•  2 x MIDI I/O via 5-pin DIN jacks 
•  Galvanically isolated by optocoupled input 
•  Hi-speed mode: Jitter and response time typically below 1 ms 
•  Separate 128 byte FIFOs for input and output 
31.3 Digital 
•  Clocks: Internal, SPDIF In, ADAT In, word clock in 
•  Low Jitter Design: < 1 ns in PLL mode, all inputs 
•  Internal clock: 800 ps Jitter, Random Spread Spectrum 
•  Jitter suppression of external clocks: > 30 dB (2.4 kHz) 
•  Effective clock jitter influence on AD and DA conversion: near zero 
•  PLL ensures zero dropout, even at more than 100 ns jitter 
•  Digital Bitclock PLL for trouble-free varispeed ADAT operation 
•  Supported sample rates: 28 kHz up to 200 kHz 
31.4 Digital Inputs 
Word Clock 
•  BNC, not terminated (10 kOhm) or internally terminated (75 Ohms) 
•  Automatic Double/Quad Speed detection and internal conversion to Single Speed 
•  SteadyClock guarantees super low jitter synchronization even in varispeed operation 
•  Not affected by DC-offsets within the network 
•  Signal Adaptation Circuit: signal refresh through auto-center and hysteresis 
• Overvoltage protection 
•  Level range: 1.0 Vpp – 5.6 Vpp 
•  Lock Range: 27 kHz – 200 kHz 
•  Jitter when synced to input signal: < 1 ns 
•  Jitter suppression: > 30 dB (2.4 kHz) 










