Safety; Optional Facilities; Accessories; Additional Documentation - Datron 4708 User Handbook Manual

Self-test
On
power-up,
the
internal calibration
memory
is
automatically
checked.
At any
time
when
the output
is
off
and
not under
remote
control,
a user
may
conduct
a sequenced
test
of the
displays,
keyboard,
safety
circuitry
and Reset
function.
Message
Readout
Messages
to
the user are presented
on
the
MODE
display:
The two main
groups
are:
Fail
An
internal fault condition has been
detected.
Error
A
user has selected a task
which
is
outside
the instrument's
capability.
Systems Use
The
instrument can
form
part
of a system by means
of
the
IEEE
488
standard
digital interface.
The method
of connecting
to
the
system
controller
and
the
command
codes
are described
in
Section
5.
Safety
For
protection of the
user, safety trip circuits are incorporated
to
switch
the
OUTPUT
OFF,
in the
event of instrument
failures
which might
generate dangerous
output voltages.
UNDER NO
CIRCUMSTANCES SHOULD
USERS
TOUCH ANY
OF THE
OUTPUT, SENSE OR
GUARD
TERMINALS UNLESS THEY ARE
FIRST
SATIS-
HED
THAT
NO
DANGEROUS VOLTAGE
IS
PRESENT.
Optional
Facilities
The
available options for the
4708
are as follows:
Option
10:
DCV
function
Option
20:
ACV
function
Option
30:
DC
Current,
AC
Current and
Resistance
functions
Option
42:
Rear
output terminals
(as
a
factory-fitted alternative to front
panel
terminals).
NB:
The
rear
output option
is
not
recommended
for best
performance
in
calibrating
high bandwidth, low
level
instruments.
Option
90:
Rack mounting
kit.
Accessories:
The
instrument
is
supplied with the following
accessories:
Description Part
Number
Power
Cable 920012
Set of
Calibration
keys 700068
User's
Handbook
850245
Calibration
and
Servicing
Handbook
(2
volumes) (Volume
1)
850246
(Volume
2)
850247
In addition the following accessories are available for
use with
the
4708
instrument:
Description
Part
Number
RMK
Rack Mounting
kit
(Option 90)
440094
Special
Lead
Kit 440070
Model 4600
Transconductance Amplifier
Slave
Mode
Lead
Kit (4600)
440151
Analog Lead
Kit (4600)
440154
Additional
Documentation
The
Calibration
and
Servicing
Handbook
contains information
required
to
adjust
and
service the
4708
instrument.
It
contains
detailed descriptions of the
circuits,
trouble shooting and
cali-
bration procedures, parts
lists,
layout
drawings and
circuit dia-
grams.
1-3