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13
Panel Descriptions
fig.rear.eps
14. Master output jacks (TRS balanced type, RCA phono type)
These are output jacks for analog audio signals. The phone jacks and RCA phono jacks output the
same signal. You may use whichever type of jack is appropriate for the connected device or the
type of cable.
* The TRS balanced master output jacks are wired as
shown on the right. Before you make connections, check
the wiring of the equipment you’re connecting.
15. Ground lift switch
Normally, you can leave this in the NORMAL (NOR) position. If you
experience noise due to a ground loop, you may be able to
eliminate the noise by setting this to the LIFT position, so that the
sleeve (SLEEVE) pin of the master output TRS balanced jacks is
disconnected from ground.
16. Digital output connector (optical)
This is an output connector for digital audio signals. Use this to digitally output audio signals to a
digital audio device such as an MD or DAT. Use an optical cable to make connections.
17. Digital input connector (optical)
This is a input connector for digital audio signals. Use this to digitally input audio signals from a
digital audio device such as a CD, MD, or DAT. Use an optical cable to make connections.
18. MIDI IN/OUT connectors
These are MIDI connectors which transmit and receive MIDI messages between computer.
* The MIDI IN/OUT connectors are not available, if you’re using the UA-25EX in Standard driver
mode (p. 45).
19. Sample rate select switch
This specifies the sample rate at which audio is recorded or played back. If you change the setting
of the sample rate select switch, you must close all software, disconnect the USB cable that
connects the UA-25EX to your computer, and then reconnect the USB cable.
* If you are using Standard driver mode (the Advanced Driver switch turned off), the sample rate
is fixed at 44.1 kHz regardless of the sample rate select switch setting.
* If you want to use 96 kHz, set the switch to “96R” while recording and to “96P” while playing
back.
Rear panel
21 23
16
14
17
18
19
15
22
20
GND (SLEEVE)
HOT (TIP)
COLD (RING)
Mater output jack
(TRS balanced type)
NOR
LIFT
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