ADC16 Instruction Manual
– Rev A
Page 19
Clock Reference Input
The Clock Reference Input uses a BNC
connector and is terminated with 75 Ohms.
This input is DC isolated and includes
overvoltage protection. This input auto-
detects AES/EBU, SPDIF, Word Clock, or 256X
Super Clock signals. When 'WC' mode is
active the ADC16 will lock to this external
clock input, and automatically follow changes
in sample-rate.
Benchmark's UltraLockDDS™ circuitry isolates
the conversion clock from any jitter present
on the clock reference. 'WC' mode will not
degrade the conversion quality of the ADC16,
even when very high levels of jitter are
present on the clock reference.
Word Clock Reference Output
The Word Clock output provides a clock signal
which can be used to synchronize
downstream components.
When the ADC16 is running in 'INT' mode
(internal clock mode), the clock frequency at
this output has an initial accuracy of +/- 5
PPM with a +/- 1PPM/yr aging characteristic.
The INT mode is suitable as a studio master
clock.
Slot for Optional Interface Cards
An interface card can be installed in the
ADC16. The card is installed in the slot to the
left of the AC power input. This slot provides
a bi-directional 16-channel interface to
external devices such as a digital audio
workstation (DAW).
For more information, go to
http://www.BenchmarkMedia.com/ADC16/opt
ional-interface-card
AC Power Entry Connector
The AC power input uses a standard IEC type
connector. Within the USA and Canada, the
ADC16 ships with a power cord. In other
locations, a location-specific IEC style power
cord may be purchased from a local source
(including a local Benchmark dealer).
Fuse Holder
The fuse holder is built into a drawer next to
the IEC power connector. The drawer
requires (two 5 x 20 mm 250 V Slo-Blo
®
Type) fuses. The fuse rating (for all voltage
settings is 0.50 Amps).
Caution:
Always install the correct fuses.
The mains power input has a very wide
operating range. The ADC16 power supply
can operate over an AC frequency range of 47
to 440 Hz, within a voltage range of 90 to 264
VAC. It can also operate from DC voltages
between 127 and 300 VDC. There are no
settings to change.
