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SECTION 3
Operation
3.3.5
Default Conditions
3.4
TEST CONNECTIONS
Default conditions
are the setup conditions
that the in-
In general, 4-wire measurements
are made on the device
strument will return to when the instrument
is powered
under test using the front panel BNC type terminals.
A
up (or when a DCL or SDC command
is sent over the
test fixture, such as the Model 3323 which connects di-
GPIB bus). The default conditions for the instrument
are
rectly to the front panel, or test cables can be used to make
summarized
by Table 3-1.
connections
to the DUT.
Table
3-1.
Power-up
Defaults
The UNKNOWN
terminals are described as follows:
Parameter
m
DISPLAY
m
DISPLAY
CKT MODE
FREQ
DELAY
LEVEL
Zero correction
BIAS
Header output
SRQ output
Address
Delimiter
Setting
AUTO
(AUTO)
AUTO
1kHz
Zero
1Vrms
No correction
Off
Inhibit (GPIB "HD 0")
Inhibit (GPIB "RQ 0" )
2
<CR> <LF>
Remark
1
1
1
1
1,2,3
1,2
Remarks:
1. The setting for this parameter cannot be saved in one of the ten
battery back-up memories. The setting for all other parameters
can be returned to the power-down
condition by recalling
Memory 0.
2. The setting for this parameter is stored in battery backed-up
memory and automatically
returns to the last programmed value
on power-up.
3. Address 2 is factory default, but can be changed by the user.
G-Ground
terminal for guard that can be used to shield
the DUT.
L CUR -
Current detection terminal
L POT -
Voltage detection terminal (Low)
H POT -
Voltage detection terminal (High)
H CUR -
Drive signal output terminal. Delivers the DC
bias and the sine wave signal.
When using individual cables, refer to Figure 3-5 and use
the following rules to connect them:
1. Connect the voltage detection terminals (H POT and
L POT) to the inner position on the DUT leads as
shown in the illustration.
2. Keep cables as short as possible.
3. If using long cables, twist the two voltage cables to-
gether, then twist the two current cables together. Fi-
nally, twist the two separate cable pairs together to
form one twisted cable assembly.
4. At the DUT, connect the shields of the BNC cables to-
gether.
+
3-9
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