Agilent Technologies 78581B, Installation And Service Manual

Page: 39 / 100

SDN and ACC System Level Troubleshooting
3-11
Warning Warning — Reconnection Warning — Disconnect SDN patient before
swapping:
Disconnect the patient from the monitor/terminal before swapping
branches in the ACC.
EXTEND TEST mode can be used to generate waveforms for
verification.
Caution CAUTION — Disconnection Caution — Data will be missed:
• While a monitor/terminal is disconnected, no alarms are available
from that monitor/terminal at the IC or at any other monitor/
terminal in the OVERVIEW mode.
• While an IC is disconnected, it generates no alarms or alarm
recordings.
Caution CAUTION — Use Appropriate Unused Branch Number:
• For a monitor/terminal, the “unused branch” must be branch #1
through #24. Make sure that the “unused branch” does not have a
telemetry bedside assigned to it.
If a monitor/terminal is placed on branches #0 or #25 through #31,
the message “SDN COMMUNICATION ERROR — ILLEGAL BED
NUMBER” will be displayed. The bedside will be able to receive data,
but will not be able to transmit data.
• For an IC, the “unused branch” must be branch #0 or #25 through
#31.
Make sure that the “unused branch” does not have a telemetry
bedside assigned to it.
STEP #5: Isolating a Problem on A Local Distribution Network (LDN) With Two or
More Instruments
The problem has been isolated to one of the SDN interface boards, or to
one of the LDC or system distribution cables (SDC or XSDC).
A problem on the LDN might affect any number of instruments on the
branch.
A problem in one SDN interface might affect other instruments on that
branch without impairing its own function on the SDN.