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OPERATION
WDEL 615 ELECTROMETER
TABLE 2.
Model 615 Front
Panel Controls
and Terminals
(Figures
1 & 3).
contra1
F""ctio"*l
Description
Par.
SENSITIVITY
Switch
Selects
full-ecsle
voltage
sensitivity;
slso
used to mulriply
2-2,2-3
current,
resietance
and charge
ranges
on the Range Switch.
Automatically
eelecrs
the proper
decimal
point
position.
RANGE Switch
Selects
the mode which
ia to be measured:
voltage,
current,
Z-2,2-3
resistance
or cherge.
FEEDBACK Switch
Selects
either
NORMAL or FAST modes of operation.
2-2,2-4,2-5
POWER Switch
Controls
e-c line
power to instrument
(an/off).
2-2
DISPLAY RATE Control
Determines
number of analog-to-digital
conversions
per second.
2-3
ZERO caner01
Provides
fine
zero control
adJuseme"e.
2-2
ZERO CHECK Switch
Provides
zero offset
check without
disturbing
the source
circuit.
2-2
INPUT Receptacle
Connefts
wurce
to input.
~ecepeacle
is a Teflon
insulneed
2-l
triaxia1
connector.
LO
TERMINAL
*Display
Lights
Numerical
Readout
Provides
connection
to input
low.
Indicates
polarity
of input
signal.
Indicates
magnitude
of input
signal.
2-l
2-3
2-3
TABLE 3.
Control
COARSE ZERO Switch
Model 615 Rear Panel Controls
end Terminals
(Figure
2).
Functional
Description
Provides
extended
adfustment
cepabflity
of the front
panel
ZERO Control.
Psr.
2-2
1 MA OuTPuT Receptacle
PRINTER/CONTROL
CO""eCtOC
Connect[i
analog
output
to monitoring
device.
50 pin connector
for BCII digital
output:
provldea
printer
control
and remote control
when Model 4401 printer
ootput
cards
ere installed.
2-9
2-10
SPARE Receptacle
Blank
hole with
cover
plate
for mounting
edditional
50 pi"
CO""BCtOC.
__-
Xl OUTPm and
G"m.tl Terminals
CASE
GROUND Terminal
Provides
extremely
linear
unity
gsi"
operation.
Also used
for
guerded
reeFstance
a.easureme"te.
Connected
to Model 615 cabinet
and outside
shell
of input
Connector.
2-9
2-6
LO Terminal
1 VOLT OWPIPI
Line Cord
F"M
Pravidea
connection
to input
low end front
panel
LO connection.
Provides
l'volt
output
for calibration
purposes.
connecta
line
power to inatroment.
3
AD
Slow Blov.
117 volt
- 314 A.
234 volt
- 3/g A.
2-6
2-9
2-2
2-2
117-234V Switch
Sets lnatrument
for either
117 or 234 volt
a-c power operation.
2-2
2
0470
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