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DATA entries to shift functions are made only from the number/units keyboard. The ENABLED light remains off
even though data may be entered.
Data is entered (that is, changes the instrument state) only when a units key is pressed. If the entry has no units (an
address, for example), use the
NEGATIVE DATA KEYBOARD ENTRY
Entering negative data from the DATA keyboard requires the use of a negative symbol prefix on the number entry.
Negative entry: [,.,,, (
For example, to enter a negative 100 MHz offset frequency:
Press & [z) to activate frequency offset.
P r e s s (,..I] ( - I 0 m m @ to enter a negative frequency.
Not all values can be entered with a negative prefix. For example, a negative entry to a voltage reference level will
result in entering the positive value.
Negative entries in dB can be made with the - dBm units key or the negative prefix with the + dBm units key. If
both negative prefix and -7;:
FREQUENCY AND AMPLITUDE OFFSET
The CRT display amplitude and frequency readout can be offset. Entering an offset does not affect the trace.
Frequency offset: (,,,,I [=I
Amplitude offset:
Offset entries are added to all the frequency or amplitude readouts on the CRT display, including marker, display
line, threshold, start frequency, and stop frequency.
FUNCTION
To eliminate an offset, activate the offset and enter zero. A FULL SPAN key also sets the offsets to zero.
Offsets are stored with the [,,, functions for recall with @ .
are used, the value will be entered as positive.
V
(DATA keyboard entry)
(DATA keyboard entry
Manual Operation 91
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