4.9 SELECTION OF THE DIAGNOSTIC MODE
CAL/NORMAL SWITCH
This
switch is used to
select
the operating
mode of
the
instrument.
The Diagnostic
Mode is entered by setting this
switch
to the Cal position while Cal Option Dip Switch
#1
is in
the
on position.
When Dip Switch
#1
is on,
Dip Switches
#2
through
#4
select the diagnostic test to be performed.
The
Diagnostic Mode is exited by setting the Cal/Normal switch back
to the Normal position.
SWITCHES
When the Diagnostic Mode is entered the functions assigned to the
CAL Option Dip Switches, (except Switch
#1),
are redefined to
allow the selection of the desired diagnostic test.
+
The Dip Switches will be read only when the Calibration Mode is
entered.
To switch between diagnostic tests it is necessary to
exit
the Calibration Mode,
reset the Dip Switches to select
the
new test and then re-enter the Calibration Mode.
Switch
#
Function
OFF (down)
ON
(up)
S1
Diagnostic Mode
OFF
Selected
Enters the Diagnostic Mode when
the Cal/Normal Switch is set to
Cal.
s2, S3,
These switches are used to
&
s4
select the diagnostic test to
be performed when the Diagnostic
Mode is entered as follows:
Switch Setting Diagnostic Test
S1
s2 s3
s4
Selected
DO ON
OFF OFF
OFF
D1
ON
OFF
OFF ON
D2 ON OFF ON
OFF
\._*--D-
ON
OFF ON ON
(-a
ON ON
OFF
OFF
DO ON ON
OFF ON
DO ON ON ON
OFF
DO ON ON ON ON
Hardware Diagnostic
Pushbutton Diagnostic
Display Diagnostic
A/D Diagnostic
Attenuator Maximum Output Level Cal
Hardware Diagnostic
Hardware Diagnostic
Hardware Diagnostic
-
xi?+
Diagnostic Mode is entered via the Cal/Normal Switch at
any
time except
during the power up initialization phase. If
selected via the switch,
the Diagnostic Mode will be entered when
the initialization is complete or the stimulus turned off.
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