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INITIAL
PREPARATION
SECTION
2.
INITIAL
PREPARATION
2-l.
GENERAL.
This section
provides
information
needed for
incoming
inspecrian
and preparation
for
use.
2-2.
INSPECTION.
The Model 1603 was carefully
in-
spected
both mechanically
and electrically
before
shipment.
"pm
receiving
the instrument,
check for
any obvious
damage which
may have occurred
during
f*El"Sit.
Report
any damages to tne shipping
agent.
TO verify
the electrical
specifications,
follow
the
procedures
given
in Section
6.
2-3.
PREPAR**ION FOR "SE.
The Model 160~ is shipped
ready-to-use.
The instrument
can be powered
from
line
voltage
or from rechargeable
nickel-cadmium
bat-
teries
(when the oprional
Model 1688A Rechargeable
Battery
Pack is installed).
a.
How to operate
From IdlIe Power.
The Model 16OB
provides
a three-wire
cord which
mates with
third-wire
;rounded
receptacles
(see Figure
4 for
~1% configura--
tion,.
the permanently
installed
line
cord is stored
by wrapping
the card around
the base of the i"str"-
ment as shown in Figure
4.
1.
wow to Set Line
Switches.
The Made1 1608 has
two rear
panel
Line
Switches
which
enable
selection
of line
voltages
over
ranges
from x0-llO",
105125v,
195-235",
or 210-250".
TO operate
from line
power.
determine
the appropriate
line
voltage
range
to be
used and set
the Line
Swirches
as fallows:
TABLE 2-1.
Summary of Line
Switch
Settings.
I
I
I
'Jo-110"
I
1
LOW. 117
105-125" NORM,
117
I
195-235"
LO", 234
210-250"
NORM. 234
For example,
if
the line
voltage
ea be used is
approximately
115 volts,
select
NORM and 117 which
permits
B range of operarion
from 105 to 125v.
hfter
line
Switches
are set,
connect
the line
cord
and set
the Power Switch
to LINE.
2.
,.ine Fuse Requirements.
The Model 1608 uses
~VO line
fuses
to protect
the line-operated
power
SWPlY.
ne
fuse
types
are l/8
ampere,
MB,
slow-
blow.
Replace
with
Keithley
Part
No. F"-20.
3.
How to Replace
Fuses in Model 1688A.
The
!Jodel, 1688H uses 1 ampere fuses
to protect
the
power supply
regulators
in case of malfunction.
Fuses F203 and F204 are plug-in
types
and are lo-
cated
on pc board
PC-349 as shown in Figure
8.
Keplace
with
1 ampere,
3AB, slo-blo,
Keithley
Part
NO. FU-28.
MODEL 160B
b.
Row to operate
From Battery
Power.
TO operate
the Model 16OB from batteries,
the Model 1688A Re-
chargeable
battery
Pack must be installed.
The Model
1688A can be either
field
or factory
installed.
(The
batteries
in the Model 1688A may need recharging
be-
fare
their
first
usage to power the Model 1600.)
NOTE
The Model 1688A Rechargeable
Battery
Pack can
be insralled
within
the Model 1608 chassis
at
any time.
However,
if
the Model 16028 Digital
Output
is already
installed,
the Model 1688A
cannot
be used simultaneously.
1.
HOW to Install
Model 168% Rechargeable
Bat-
tery
Pack.
The batteries
furnished
with
the Model
1688A come already
installed
in the battery
pack.
the battery
pack includes
7 rechargeable
"C" cells
(1.2",
3 AMP HR) and 1 rechargeable
pack (16.8V).
If baeeeries
need to be replaced
or re-installed,
be certain
to observe
the proper
polarity
of indi-
vidual
cells
as shown in Figure
6.
To install
the
Model 1688A Battery
Pack,
turn
the instrument
over
so that
the bottom
cover
faces
up.
Loosen four
slotted
screws
on the batrom
cover
as shown in
Figure
4.
(A chisel-blade
screwdriver
is requires'
to loosen
the slotted
screws.)
Turn over
the in-
strument
with
tap cover
facing
up, taking
care
to
hold
the top and bottom
covers
together.
Carefully
remove the top cover
to gain
access
fo the printed
circuit
board.
(Two "ires
that
connect
to the
Analog
Oufput
must be disconnected
at the PC board
before
the top cover
can be set aside.)
Check to
see that
the four
insulating
spacers
are in yasi-
tion
on the printed
circuit
board.
Place
the Model
1688A Battery
Pack in position
an the spacers
with
the cable
oriented
as sham
in Figure
8.
Plug the
4-wire
Conneceor
(5205)
into
the mating
receptacle
(P205)
taking
care
to orient
the connector
as
shown in Figure
8.
After
the Battery
Pack is in-
stalled.
replace
the top cover.
Turn over
the in-
strumen;
wiih
bottom
co&r
facing
up and tighten
down the four
slotted-head
screws.
TABLE 2-2.
Sumnary of nateerie
Used in Model 1688A
Rechargeable
"C" cell,
1.2".
2 AMP-FIR
Rechargeable
battery
pack,
16.8V,
.225
Am-m
1
TM-32
0976
6
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