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Table 2-1. Factory Default Conditions
Control/kahw
Zero value (rrogram ZERO)
dB
dB Reference Value
(program dB)
Filter
Filter Value (Program FILTER)
MX+B Status (Program 4)
MX+B Parameters (Program 34)
Multi
HI/ LB
lexer (Program 6) '-'
/l'ASS~~(l'rogrsm 5)
HI/Lo Limits (Program 35)
Ohms Compensation (Program R
1)
kfault Condition
DCV
3cQV
6% Di 'ts
Diiabgd
000.0000
Disabled
1.000000
Disabled
lo
Disabled
M=1.0OWOO~ ;~~
3=000.0000
Enabled
Disabled
+3.030000,
-3.o3clooo
Disabled
2.3 FRONT PANEL FAMILIARIZATION
The front panel layout of the Model 196 is shown in Fiie
Z-l. The following paragraphs describe the various com-
ponents of the front panel in detail.
2.3.1 Display and Indicators
Display-The 10 character, alphanumeric, LED display is
used to display numeric conversion data, range and func-
tion mnemonics (i.e. mv) and messages.
Function Indicators-The
indicator that is on identifies
which of the five operating functions is currently selected.
Rsnge Jndicator-When the instrument is in autorange the
AUTO indicator light will be on.
Modifier Indicators-When the zero feature is enabled, the
ZERO indicator will torn on. When filter is enabled, the
FKTER indicator will turn on.
NOTE: The Model 196 is initially set for an IEEE address
IEEE Status Indicators-These three indicators apply to in-
of 7. The line frequency is set to 50 nor 6OHz.
strument operation over the IEEE-488 bus. The RMT in-
dicator shows when the instrument is in the IEEE-488
remote state. The TLK and LSN indicators show when the
User Saved Default Conditions
Each function oft the Model 196 "remembers"~ the last
measurement configuration that it was set up for (such as
range, zero value, filter value, et+ Switching back and forth
between functions will not affect the unique tonfiguratioq
of each function. However, the instrument will "forget" the
configurations on power-down unless they are saved.
Unique setup conditions can be saved by running front
panel Program 30 (Save) or by sending device-dependent
command Ll aver the IEBE-488 bus. These~tiser saved
default conditions will prevsjl over the factory default con-
ditions on power-up, or when a DCL or SDC is asserted
over the bus.
IEEE Address and Lie Frequency
Any IEEE address and line frequency setting can be saved
as default conditions by running Program 30 (Save) or by
sending Ll over the bus. See paragraph 2.7 for complete
information on Programs 31 (IEEE Address) and 32 (Line
Frequency).
NOTE
An 'TJNCAI!' error will set the IEEE address to 7
and the line frequency to 6OHz.
instrument is in the talk and listen states respectively. See
Section 3 for detailed information on oueration over the
bus.
2.3.2 Controls
.&lI front panel co&ols,
except the POWER and C%L
ENABLE switches, are momentary contact switches. In-
dicaton are located above certain buttons to show that they
are enabled. Some buttons have secondary functions that
are associated with front panel program operation. See
paragraph 2-7 for detailed information on front panel
prOg.3lllS.
El
POWER-The POWER switch controls AC power to
the insbxment . Depressing and releasing the switch once
tams the power on. Depressing and releasing the switch
a second time turns the power off. The correct positions
footi\and off are marked on the front panel by the POWER
El
FUNCTION GROUP
DCV-The DCV button places the instrument in the DC
volts measurement mode. The secondary function of this
button is to enter the i sign. See paragraph 2.6.4 for DCV
measurements.
2-2
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