In this program, you will be trouble shooting various faults in a
CASCADED R-C Coupled Amplifier with degenerative feedback.

You will be given the opportunity to copy the Schematic from the
screen or print it out during the running of the program.

The program simulates trouble shooting using an O-SCOPE with a
SIGNAL Generator connected to the circuit INPUT. The O-SCOPE is
a dual-trace with channel one display moved off the screen with
the vertical position control. This will enable full screen use
for amplitude measurement and show correct phase inversion.

The status of the Signal generator and O-SCOPE setting are
displayed at the bottom of the screen.

Provisions have been made for your instructor to select if he
desires you to have access to some HELPFUL hints or want's you
to stop after fifteen faults, for his evaluation.

Every effort has been made by me to make this program as near as
possible to the real thing.  Listed below is a recommended
sequence to follow.

1. Check for correct input from the Signal Generator.

   A bad input guarantees a bad output.

2. Check the last output of the circuit.

   In the real world, the output device, such as a speaker
   or other electro-mechanical device, is the problem and
   you can spend hours trouble shooting something that is not
   broke.
 
3. Half-Split

   Select a test point approximately half way between the input
   and the final output. Continue Half-Splitting until the AC
   readings isolate the faulty circuit.

4. Turn off the Signal generator.

   This allows you to make the DC readings, if required, without
   the AC signal to distract you. Remember it is possible to
   make DC readings with the AC present. 

The following instructions are for the display below the
O-SCOPE screen.

V/DIV reads the same as an O-SCOPE measure the amplitude,
vertical height, and multiply times V/DIV number for amplitude.

T/DIV also reads the same as an O-SCOPE, horizontal width of one
sign wave times the T/DIV setting divided into one (1) for
frequency.


<Q> Depress the Q key to list the faults that you can select.

<R> Depress the R key to read these instructions again.

<S> Depress the S key to toggle the Signal Generator on and off.

<T> Depress the T key to terminate the program.

You can enter an Q,R,S, or T, upper or lower case.

The keyboard is locked out, so please wait until SELECT is
displayed accompanied by a beep tone when it is OK to make an
entry.

The program is designed so a lower case letter designates the
test point with a fault installed and a upper case letter
requests a reference voltage for that test point. If you need the
reference voltages, depressing the SHIFT KEY at the same time as
the TEST POINT KEY, will display the reference voltage.
In either case the last test point that you selected will be
displayed under the O-SCOPE screen.

The program will terminate after fifteen (15) faults and your
progress will be displayed on the screen or after your instructor
has entered his PASSWORD, if he elected to do so.

                          GOOD LUCK
