CHAPTER 3: Installation
17
WARNING!
Do not use any power supply other
than the one provided with your Multi-
server 500, as illustrated in Figure 3-1.
Any other power supply could damage
the Multiserver 500.
5. Connecting a Terminal to the Command Port
See
Chapter 6
for information on setting up and
using your terminal.
3.3 Setting the Composite Transmit Clock
If your composite interface is connected to a DCE
device as in Figure 3-2, verify that the composite
clock is set to external. You can do that from the
LCD/keypad:
Main Menu
Configure Parameter
Composite Link
External Clock
NOTE: As shown in Figure 3-2, the Multiserver 500
provides transmit and receive clocks to the
synchronous data interface.
CAUTION!
Once a pair of Multiser ver 500s,
configured for external clocking, have
established communications, the
clocking rate provided from the link
DCE device cannot be changed. If the
DCE rate is changed you must either
cycle the power off and on on the
Multiserver 500 or disconnect the link
cable and then reconnect.
You can use two Multiserver 500s as a diagnostics
tool. Simply connect two Multiserver 500s back to
back and bench-test them. To do this, set both
muxes to internal clock and select a composite
clock rate.
Once you’ve selected a composite clock rate, you
must set both the local and remote muxes to the
same rate. The procedure is as follows (see
Figure 3-3 ):
2. Set the clock rate (9600) of the local unit to
external:
>COM C=EX R=9600 <cr>
DATA SOURCE
MULTISERVER 500
DCE DEVICE
RxC
RxD
TxD
TxC
Set for
External
Clock
RxC
RxD
TxD
TxC
Figure 3-2. Clocking with Multiserver 500 Connected to a DCE Device
