Operating instructions

Front Panel
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source is external, a clock signal must be present at the input selected by the Clock knob. Note: After
the Power Switch is turned on, the Clock Status lamp stays off for about 12 seconds while the 2192
power conditioner and analog conversion circuits perform their initial calibrations.
(6) Analog Outputs DAC Source Select- This three-position knob specifies the digital source for the
D/A converters and the analog outputs, as follows:
AES/SPDIF In - When the Analog Outputs knob is set to AES/SPDIF In, either the AES or the
SPDIF digital input signal ( see #2 on page 9 and #6 on page 10) is routed to the D/A converters
and analog outputs, depending on the position of the AES/SPDIF switch. ( see #7 below)
ADAT In - When the Analog Outputs knob is set to ADAT In, the digital signal from the ADAT
optical input ( see #11 on page 10) is routed to the D/A converters and analog outputs. The S-MUX
mode is determined by the Sample Rate Select knob. (see #4 on the previous page)
ADC - When the Analog Outputs knob is set to ADC, the signal appearing at the analog inputs
( see #13 on page 11) is routed to the analog outputs, via both the A/D converters and D/A
converters, for “true confidence” monitoring.
(7) AES/SPDIF switch - This switch specifies whether the AES or SPDIF digital inputs are used when
the Clock knob (see #3 on page 4), Analog Outputs DAC Source Select knob (see #6 above), or
Digital Outputs Source Select knob ( see #9 on page 8) is set to AES/SPDIF. When the button is
pressed in, the SPDIF input signal is used. When the button is out, the AES input signal is used. Both
the AES and SPDIF digital outputs are always active.
 The clock must be locked for proper A/D and D/A conversion and for transcoding.
 The 2192 cannot lock to an external device that is set to slave to the 2192!
 If the clock won’t lock when the Clock knob is set to an external source, verify that the
external device is connected to the proper digital input and that it is transmitting a clock
signal.