Model 6487 Reference Manual
Measurements and Sourcing Voltage
3-13
Step 7. Disable zero check and take a reading from the display
Press ZCHK to disable zero check and display readings. If the readings are noisy, use fil-
tering to reduce noise.
klqb
For any ohms measurements, the ohms reading is invalid and unknown if the
voltage source is in compliance. Therefore, a value of -9.9e+36 will be returned
over the GPIB and the message I-LIMIT will be displayed on the front panel for
both normal readings and buffer recall readings for any ohms readings where
the voltage source went into compliance.
Figure 3-3
Connections for ohms measurements
Black (LO)
Re
d
(HI)
237-AL
G
-2
Cable
Me
t
al
N
oi
s
e
S
hiel
d
Me
t
al
S
a
f
e
t
y
S
hiel
d
S
a
f
e
t
y
Ea
rt
h
Gr
oun
d
Gr
een
(Cha
ss
i
s
)
DUT
DUT = Device Un
d
e
r
Te
st
.
Model 64
8
7
V-
S
OURCE
OUTPUT
120
LINE RATING
50, 60Hz
50 VA MAX
INPUT
(CHANGE IEEE ADDRESS
WITH FRONT PANEL MENU)
IEEE-488
CAT
I
TRIGGER LINK
RS-232
MADE IN
U.S.A.
ANALOG OUT
DIGITAL I/O
INTERLOCK
505V
MAX
V-SOURCE OUTPUT
505V PK TO CHASSIS
LO
HI
!
!
FUSE
LINE
400mAT
(SB)
100 VAC
120 VAC
200mAT
(SB)
220 VAC
240 VAC
505V PK
505V PK
505V PK
