Keithley 705 Instruction Manual page 26

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NOTE
If other instrumentation
is connected
to the bus,
be sure that each device
has a different
primary
address,
If this precaution
is not observed,
erratic
operation
may result.
To initiate
Program
3, and change
the primary
address to 22
use the following
procedure:
1. Press PRGM.
(Selects the program
mode and displays.)
P
I
/-a ?
2. Press 3. (Selects
Program
3 and displays the following:)
(1
IE = IEEE Indicator
17 = Primary
Address
3. Press 2, 2, ENTER. (Loads 22 onto
the display.
Pressing
ENTER programs
the primary
address to 22 and reverts the
Model 705 to the channel
mode at the previously
displayed
channel).
4. Press PRGM, 3. (Shows
the user that the primary
address
has indeed changed
to 22.)
2.6.5 Program
4 Save Present
Relay Set Up
Program
4 is used to save (store) the present
relay set up for
future
use. This program
is capable
of storing
five separate
relay set ups, This means, the user can program
five different
relay set ups, save the set ups, then use the stored set ups
when
the need arises without
reprogramming,
Program
4 is
very helpful in a situation
where the instrument
is going to be
shut down for a period of time and the user does not want to
reprogram
the relay set up the power
is returned
to the unit.
The program
is also helpful
when
the user has programmed
one relay set up and needs to go to another
completely
dif-
ferent set up without
clearing the existing one. In this case, it's
possible to program
one relay set up and store it with Program
4, then program a different
set up, store it with program 4. This
way has both relay set ups are stored for future
use.
NOTE
The Model 705 can only use one relay set up at a
time, they cannot
be used simultaneously.
An example
of using Program
4, program
the Model 705 for
five channels with the odd numbered
channels
closed and the
even numbered
channels
open. When the set up is complete,
save the set up by using Program
4. Use the following
pro-
cedure to implement
this example:
1. Press RESET. (Selects channel
mode and resets to the pro-
grammed
first channel.)
2. Press
0,
1, FIRST.
(Selects
channel
one
as the
first
7. Press
CHANNEL,
CHANNEL,
CLOSE.
(Advances
the
Model 705 to channel
5 and closes it.)
8. Press PRGM, 4. (Selects program
mode, selects Program 4
and displays the following.
SHUE II
I
9. Press 1, ENTER. (Selects
relay set up 1 to be stored and
when
ENTER is pressed the set up is stored.)
Upon the actuation
of step 9, the relay set up that was pro-
grammed
in steps
1 through
8 is now stored
in nonvolatile
RAM (NVRAM).
The Model 705 then reverts to the previously
displayed
channel which is in this case channel 5. To verify that
the relay set up has been stored use the following
procedure,
I. Press RESET. (Resets to the programmed
first channel and
opens all relays.)
2. Press PRGM,
5, 1. (Selects
Program
5, which
recalls the
stored relay set up. Refer to paragraph
2.6.6.)
3. Press
CHANNEL
four
times
and
notice
that
the
odd
numbered
channel
are all closed and the even numbered
channels are all open. This shows that the relay set up was
indeed stored using program
4.
For another
test of the relay set up, shut off power
to the
Model 705 for a few minutes.
Turn the Model 705 back on and
press PRGM, 5. Notice the programmed
first channel is closed
and all the odd channels
are closed.
All the even channels
should be open. Thus, power to the instrument
was shut off,
and the relay set up remained
stored.
To store an additional
relay set up, program
the set up and
press PRGM, 4, 2. This action saves the relay set up without
disturbing
the previously
stored set up. This can be done with
up to five separate set ups. To clear a stored relay set up press
RESET, PRGM, 4. This stores the reset condition
for the relay
set up.
NOTE
Program 4 does not save just the relay set up bet-
ween
the programmed
first and last channels.
The program
saves the entire relay set up of the
Model 705.
2.6.6 Program
5 Recall Stored
Relay Set Up
Program
5 is used to recall a previously
stored
relay set up.
Program 4 and 5 work in conjunction
with each other. Program
4 is used to store a relay set up, while
Program
5 is used to
recall the relay set up that was stored
using Program
4. Pro-
gram 5 also recalls the programmed
first and last channels
along with the relay set up that was stored in the example
of
Program
4.
channel..)
3. Press 0, 5, LAST.
(Selects channel five as the last channel.)
In the example
of Program 4, five channels were selected with
4. Press RESET. (Resets to the programmed
first channel.)
the odd channels
closed
and the even channels
open.
The
5. Press CLOSE. (Closes presently
displayed
channel.)
channels were stored and then the Model 705 was reverted to
6. Press
CHANNEL,
CHANNEL,
CLOSE.
(Advances
the
the reset condition.
This is where we will start the example
of
Model 705 to channel 3 and closes it.)
Program
5. To recall the stored relay set up, use the following
procecfure:,
2-15

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