Keithley 706 Instruction Manual page 40

5.
6.
7.
a.
9.
10.
11.
Press PRGM, 4, 0, 5, ENTER. Selects Program 4 and
stores the present relay set up in location 05. For simplici-
ty in this procedure the relay set up is all relays open.
Press PRGM, 9, 4. Selects Program 94 and displays the
following message.
This display informs the user that the clear program is ac-
tivated and is presently at memory location 05.
Press ENTER. Clears memory location 05 and returns to
the previously shown channel display.
Press PRGM, 9, 4. Selects Program 94.
Press 0, 4, ENTER. Clears memory location 04 and
returns to the previously shown channel display.
Press PRGM, 9, 4. Selects Program 94.
Press 0, 3, ENTER. Clears memory location 03 and
returns to the previously shown channel display.
After completing step 11 memory locations 3, 4 and 5 are
cleared. To verify that the locations have been cleared, ac-
tivate Program 5 for locations 3, 4 and 5. Use the following
procedure to illustrate this.
I. Press PRGM, 5. Selects Program 5 recall.
2. Press 0, 5. Sets the instrument to recall memory location
05 and displays the following:
3. Press ENTER. This step attempts to recall memory location
05. But when ENTER is pressed the instrument reverts to
the following display because memory location 5 has been
cleared.
4. Repeat steps I,2 and 3 for memory locations 3 and 4. This
will verify that the location have indeed been cleared.
NOTE
Program 94 is different from storing all relays
open in a memory location. Using Program 94 to
clear a memory location wipes out the location
altogether. Attempting to recall a cleared
memory location is not valid. The memory loca-
tion (if it is needed) will have to be programmed
using Program 4.
In the matrix mode, steps 1 thru 4 could be used differently.
After step 4 the user would press ENTER. This will display the
recall message. Now press START/STOP to advance
through the stored memory locations. In this example set ups
03, 04 and 05 are cleared. Therefore, pressing the START/
STOP button a few times shows that only set ups 01 and 02
exist. There could be more locations beyond location 05, but
using this method of the START/STOP button while in the
matrix mode, stops at the location where there is no location
and loops back to location 01.
To clear all the buffer locations press PRGM, 4, 0, 0.
2.9.15 Program 99 Reset
Program 99 is used to reset the Model 706 to the conditions
listed in Table 2-21. To activate Program 99 use the following
procedure:
1. Press PRGM. Selects program mode.
2. Press 9, 9. Initiates front panel Program 99.
Upon completion of step 2 the Model 706 goes through a
reset sequence that is described as follows:
1.
2.
3.
4.
Upon completion of step 2 the Model 706 responds by
displaying the following message:
/
After the reset message, all front panel LEDs turn on for a
period of time as shown in the following display.
The push button and TALK, LISTEN and REMOTE LEDs
also turn on at this time. During this time the Model 706
performs a cyclic redundancy check (CRC) of the ROM cir-
cuitry and a digital self test of the RAM circuitry. Refer to
Program 8 for details on the ROM and RAM checks.
After all the front panels are turned on and then off, the
Model 706 displays the current software revision level for
approximately 0.5 seconds. The following display is an ex-
ample of software revision level Al.
I
A
After the software revision level is displayed the Model 706
displays the primary address for approximately 0.5
seconds. The following display is an example of primary
address 18.
I IE I81
c
1
Once the primary address display is shown the Model 706
is in the Program 99 reset condition as defined by Table
2-21.
2-28