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Technical Specification
Instruction Manual: TT1260 Standard Definition Professional Receiver/Decoder Page B-7
ST.TM.E10100.1
B.3.2 Analogue Audio
The TT1260 supports level control of the audio outputs. Independent
control of each output of each stereo pair is provided via the User
Interface and remote interfaces.
Audio output connector type: 2 X 9 way female D-type
Output level: +18 dBm nominal clipping level. Selectable in range 12 to
+24 dBm.
Output impedance: 50 W (nominal).
Table B.5: Analogue Audio Performance Requirement
Parameter Conditions Limit
Gain 0 dBm input level ±1 dB
Frequency response 100 Hz - 15 kHz, 0 dBm input level ±0.2 dB
20 Hz - 20 kHz, 0 dBm input level +0.5 dB, -1 dB
Cross talk 0 dB input level, 100 Hz -80 dB
0 dB input level, 1 kHz -70 dB
0 dB input level, 10 kHz -60 dB
Distortion +8 dBm input level, 100 Hz -70 dB
+8 dBm input level, 6.3 kHz -70 dB
Noise RMS -65 dB
Phase 40 Hz to 15 kHz ±2°
Lip sync delay Depends on synchroniser configuration ±2ms
B.3.3 Digital Audio
Maximum data rate: 3.072 Mbit/s.
· EBU Tech. 3250 Specification of the digital audio interface (the
AES/EBU interface), 2nd Edition 1992
· AES Recommended Practice for Digital Audio Engineering – Serial
transmission format for two-channel linearly represented digital audio
data (Revision of AES3-1985, ANSI S4.40-1985)[1999-02-10 printing]
· ANSI S4.40 – 1992 Recommended Practice for Digital Audio
Engineering – Serial Transmission Format for Two-Channel Linearly
Represented Digital Audio Data (AES 3)
B.3.4 Embedded Audio
Either or both of the stereo pairs selected for decoding by the Receiver can
be routed out via the SDI video output, as AES/EBU digital audio
embedded in the Ancillary Data Space, as defined in SMPTE 272M-1994.
The operational level of this standard supported is SMPTE 272M –A
(20-bit synchronous audio at sampling rates of 48kHz).
B.3.5 Audio Routing
The IRD supports the following routing of the stereo audio signal under
control of the User Interface and remote interfaces:
· Normal stereo (left signal to left output, right signal to right output)
· Left to both (left signal to left and right outputs)