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Connecting the
instruments
Figure 3-40, Connecting the 2074 Synchronization Cables
Selecting a Master
There is a difference if you wish to synchronize two or more
instruments because, for two instruments you do not need to have a
LAN network however, if you need more than 4 channels, the only
way to do it is by connecting each instrument, separately, to the
LAN network. For two instruments only, you can either connect to
the LAN network or connect between the two instrument using a
cross-wired LAN cable. In addition to the LAN cable(s) you need to
connect the sample clock and the trigger signals between
instruments. If you look at figure 3-40 below, you'll notice the X-
INST SYNC group of connectors. These are SMB type connectors.
They are connected as follows: The SCLK OUT and the COUPLE
OUT connectors on the master module are connected to the SCLK
IN and the COUPLE IN on adjacent slave unit. Additional units are
connected in a daisy chain manner.
As a general note, if you do not intend to use the 1281A's in
Master/Slave mode, it is highly recommended to remove the cable
from one of the instrument because signals that are routed from
one instrument to the other may interfere during normal operation.
Synchronization Connectors
Connecting the cables between the instruments is just the first step.
The next is to select one instrument as master and the others as
slave. Use the following procedure:
1. On the master unit, press the TOP Menu button to select the
root menus
2. Press the down key button
Using the Instrument
Using the Half Cycle Waveforms
3
3-65
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