
Installing the Equipment
2.6.3.2 Analogue/Digital Audio Outputs
The TT1222 Receiver is fitted with two 9-pin D-type connectors
each carrying one analogue audio pair and one digital audio
signal.
Table 2.4: TT1222 Audio Connectors 1 and 2
Item Specification
Connector type 9-way D-type, Male
Connector
designation
AUDIO 1, AUDIO 2
Output format Balanced analogue, Unbalanced digital
Nominal output level
0 dBm in 600 Ω (0 dBu) adjustable from –9 dB to +3 dB in 0.1 dB
steps.
Output impedance
< 50 Ω
Idle channel noise < -74 dB
Pin Function
1 Unbalanced Digital audio
2 Ground
3 Left +
4 Right +
5 Ground
6 Reserved
7 Ground
8 Left -
Pin-outs:
9 Right -
The TT1222 is able to decode and output Dolby AC-3 encoded audio components
on both audio outputs if the Dolby AC-3 license is enabled.
Note: Dolby AC-3 decoding shall be enabled and disabled by license key. For
more information, please contact Ericsson Customer Services.
EN/LZT 790 0002/2 R1A
2-12
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