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LOCKING
TABS
MODEL706
/
REAR PANEL
2.3 POWER UP
NDLES
SCANNER
CARD
INSTALLATION
Figure 2-l. Scanner Card Installation
When the Model 706 is turned on the instrument
goes
through a power up sequence that is outlined as follows:
Immediately after turing on the Model 706 via the power
switch, the display indicates the following
for a number of
seconds:
1
1
1. This is a display test. The operator can note inoperative
display segments by comparing the Model 706's display
with the figure above.
2. In addition, the pushbutton
and the TALK, LISTEN and
REMOTE indicators
turn
on. All indicators
turn
on
simultaneously if operating correctly.
After the display test is complete, the Model 706 displays the
software revision level for approximately
0.5 seconds. The
following is an example of software revision level Al.
RI
I
After the software revision level is displayed, the Model 706
displays the primary address of the instrument for approx-
imately 0.5 seconds. The primary address of the Model 706 is
factory set at 18.
r---r-q
During the display test the Model 706 performs a digital self
test of the RAM circuitry and a cyclic redundancy check
(CRC) of the ROM circuitry. If a problem is found by these
tests the Model 706 displays a diagnostic
number. This
number and its meaning is described in detail in Section 5.
After all the displays and test of the power up sequence, the
Model 706 comes to the default conditions that are listed in
Table 2-3.
NOTE
If upon power up the Model 706 displays the
slave or no loop message (refer to paragraphs
2.9.11 and 2.9.12) activate Program 90 to return
the Model 706 to normal operating conditions.
To activate Program 90, press PRGM, 9, 0.
'2-2
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