Pacific Digital AD8HR - Manual (Page 11)

Wordclocks
11
For proper AD conversion and digital audio data transmission and reception, the D8HRs and external
digital audio devices must lock to an identical wordclock. The AD8HR is capable of transmitting a
wordclock signal of 44.1kHz, 48kHz, 88.2kHz, and 96kHz, you can use the AD8HR as the wordclock
master and the external devices as wordclock slaves. The AD8HR can also lock to the wordclock signal
received at the [DIGITAL OUT A] connector or [WORD CLOCK IN] connector.
AES/EBU Connections
Use an AES/EBU cable to transmit digital audio data
and receive a wordclock signal on the AD8HR.
NOTE:
In Double Channel mode, the AD8HR will run at a clock
rate that is twice (88.2/96kHz) the clock (44.1/48kHz)
received at the [DIGITAL OUT A] connector. In Double
Speed mode, the AD8HR will run at a clock rate that is the
same as the wordclock (88.2/96kHz) received at the
[DIGITAL OUT A] connector.
WORD CLOCK jack connection
The AD8HR can receive wordclock signals at the
[WORD CLOCK IN] connector. The [WORD CLOCK
IN] connector and [WORD CLOCK OUT] connector
can also be connected in series to allow multiple
AD8HR units to receive a wordclock signal.
The AD8HR’s [WORD CLOCK IN] connector is
terminated at 75 ohms. Do not use a “T” connector to
make connections.
Wordclocks
DIGITAL OUT A AD8HR
+48V
HPF
dB
96kHz 88.2kHz 48kHz 44.1kHz
+48V
OFF ON MASTER WORD CLOCK
Digital audio devices
(PM5D, DM2000, etc.)
Wordclock Audio data
Wordclock source = DIGITAL OUT A
AD8HR AD8HR AD8HR AD8HR
WORD CLOCK
IN OUT
WORD CLOCK
IN OUT
WORD CLOCK
IN OUT
WORD CLOCK
IN
Wordclock
master