Digital A And B Terminals And Reception Of Word Clocks; Word Clock Connector; Checking The Overall System - Roland VM-C7100 Owner's Manual

Chapter 1 Introduction
DIGITAL A and B terminals and reception of
word clocks
DIGITAL Ins—the DIGITAL A connector on the rear of the processor and DIGITAL
B jack on its front—can receive digital audio signals from digital equipment to which
they are connected, even when some other device is the source of the system's word
clocks. When the system's timing is based on word clocks received, for example,
from a multi-track recorder to which the R-BUS jack is connected, additional digital
audio can still be received at the DIGITAL IN terminal. In such a case—when the IN
terminal of DIGITAL A or B is used for digital audio only—"DIGITAL IN" need not
be selected as the word clock source.

Word clock connector

When a word clock output connector is available, it is recommended that the word
clock connector on the rear of the processor be used. Although word clocks can be
supplied from R-BUS or DIGITAL IN A or B via a digital audio cable, audio signals
are more stable when word clocks are supplied directly from the source.

Checking the overall system

Apart from the aforementioned word clock, there are some important settings
related to digital input/output. When handling audio signals via digital connection
with other devices, make the necessary changes.
Settings on the digital I/O screen
1. While holding down [SHIFT], press [PROJECT].
2. Press cursor [DOWN], then [F1] (DIGITAL I/O).
This calls up the digital I/O setting screen.
fig.01-101
1 ... Digital input connector selection
Select either DIGITAL A IN (coaxial) on the rear of the processor, or DIGITAL B IN
(XLR connector) on the front. Place the cursor, select with the V1 knob and enter with
[F1] (SET).
32
For this reason, sample rate
converters are built into the
DIGITAL A and B
terminals. If the digital
audio at these inputs is a
different sample rate than
the system word clocks, the
difference will be
accommodated for by these
converters, leaving the
digital audio signals free
from noise or dropouts.