HP 70000 series - Error Reporting and Indicators

The display letter E (error) indicates an error condition either in the display or in an element
on the HP-MSIB that has reported errors to the display. An element can report errors to the
display only if its HP-MSIB address is set to row 0. All elements in row 0 report their error
status to the display. Masters in row 0 also report their slave error status to the display screen.
An error indicator ashing at a 1 Hz rate indicates that the element could not communicate on
the HP-MSIB at power-up. A ashing error indicator also occurs with other errors that are only
present under certain measurement conditions (for example, locking errors when the analyzer
sweeps). In this case, the error indicator ashes at the sweep rate.
Active Indicators. The ACT (active) light of an element turns on when the element is being
accessed through the display keyboard. If the element is in self-test mode, the ACT light
remains
on
until
the
test
is
completed.
The display letter A (active) turns on when the display menus are accessed with the display key
(for example, 4
DISPLAY
5 for the HP 70206A system graphics display or HP 70004A color display
and 4
DSP
5 for the HP 70205A graphics display). When the assign-window, address-map,and
next-instrument softkey functions for the display are operating, the active indicator turns on
for
the
element
that
is
selected. In all other display functions, the letter A is displayed.
Each element turns its active indicator on when the cursor of the display screen address map
is at the HP-MSIB address of that element. The HP-MSIB address of each element may be
identied by scrolling the cursor through the address map and observing the active indicators.
HP
70001A
Mainframe
Status
Indicators
The
HP
70001A
mainframe
has
V
OL
T/TEMP
,
CURRENT
,
and
I/O
CHECK status indicators.
The
V
OL
T/TEMP
light
indicates
that
the
line
voltage
or
power
supply
temperature needs to
be
checked.
The
CURRENT
light
indicates
that the loading conditions on the mainframe power supply
may
be
incorrect.
The
I/O
CHECK
light
indicates either problems with the HP-MSIB cables or that a mainframe
(in
a
system
with more than one mainframe or display instrument) is not turned on.
Additional information on these status indicators is given in \Catastrophic Failures" in this
chapter.
Error Message Reporting
Error Message Block
The local oscillator (LO) displays error messages for the modular analyzer in the error message
block of the LO display window
. See Figure 5-1.
Each error message provides the error number and a description of the error as well as the
model number and address of the element with the error condition. Up to ve error code
messages may be displayed simultaneously.
Error Report Screen
The display screen displays the errors being reported by any element at row address 0.
See Figure 5-1. The error messages may be viewed by pressing the display key, then
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
REPORT ERRORS . See Figure 5-2. The error report screen provides the error messages of
elements on the HP-MSIB, and the
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
MORE ERRORS softkey is displayed if there are additional
error code messages on the succeeding page. See Figure 5-2 and Figure 5-3.
Troubleshooting 5-3