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1256E User Manual
Racal Instruments
©
2002
Getting Started 2-5
Self-Test
The 1256 automatically performs a self-test immediately after
power is applied. The self-test completes within ten seconds after
power application. If a failure is detected, a message appears on
the front-panel display. If this occurs, refer to
Appendix C,
TROUBLESHOOTING
to solve the problem.
If the self-test does not detect a problem, the front-panel display
will show the main menu. The top line (line 1) of the display
appears as follows:
----OPERATIONS----
The contents of lines 2 through 4 depend upon which plug-ins are
installed.
Verifying the
Installed Plug-Ins
The front-panel controls provide a way to verify which plug-ins are
installed in the 1256. For example, suppose the following plug-ins
are installed:
Slot 1:
Model 1260-121A
Slot 2:
Model 1260-138A
Slot 3:
Model 1260-118
Slot 4:
Empty: no module
Slot 5:
Empty: no module
Slot 6:
Empty: no module
Slot 7:
Empty: no module
Slot 8:
Empty: no module
You may verify the installation of these plug-ins as follows:
1. Press the top key on the keypad next to the display (see
Figure 1-2). Rotate the knob until the top line reads:
>----OPERATIONS----<
The markers “>” and “<” indicate that this line has been
selected by pressing the corresponding button. When a line
is selected, rotating the knob changes the contents of that
line.
2.
Select line 2 (next to top line) by pressing the key just below
top key. The display describes the plug-in that is in slot 1:
----OPERATIONS----
>Slot 01: 1260-121A<
Channel: 0
Status: Open