INSTALLATION
AND OPERATION
i
l
Table
2-1.
Front Panel Controls, Indicators, and Connectors (cont)
STATUS
A push-and-hoLd key that displays the Uncal and Reject
Entry status codes in the
MODULATION,
FREQUENCY, and
AMPLITUDE display fields.
ON/OFF A push-on/push-of f key (with a corresponding 'RF OFF*
indicator
in
the
STATUS display filed) that
enables
or
disables
the
output of
the Generator.
Connector A BNC connector for input of a 1V peak, external
modulation signal.
Connector A standard RF connector at the output of the Generator.
©
POWER A push-on/push-off detent switch that applies line power
to the Generator.
2-13. Function Entry
Changing an
instrument parameter
with
the
FUNCTION-DATA-UNIT entry
method of
consists
of:
Selecting the Function to be changed
Entering the new numerical value of the parameter
Selecting the Units of the numerical value (megahertz, millivolts, etc).
The command syntax for function entries is:
Select
Function
-
Enter Data
^
Select
Unit
1 . Select one of the four parameters using the FUNCTION keys. The bright
digit
appears in the corresponding display field. The presence of the bright digit
in
the
display
field
indicates that the value of the selected parameter is ready to be
programmed
or changed.
2.
Enter the data with the DATA keys. The numerics appear in the appropriate
display
field.
3. Select a UNIT key. This gives the data its absolute value, and causes the
microprocessor to internally program the Generator to the new state.
For the amplitude and frequency functions, the entered data programs the displayed
value.
If the relative mode is enabled, the displayed value may be different from the actual
output value.
Once a function is selected, that parameter or feature remains in the active programming
mode
until
a
new
function
is
selected. Data for a selected parameter must be followed by a
unit value and must be
within
the range specified for the function. The
display
field
flashes and, the ‘REJ ENTRY’ status indicator flashes if the entered data is not within the
specified range. A rejected entry does not affect the output of the Signal Generator. The
output of the Generator remains at its previous values until a new value is accepted.
A
function
entry may
be
terminated at any time by the [CLRILCL] key or by selecting
another
function.
2-9