RJ?
Output
RF
OUTPUT
2’
3’
1.
RF
ON/OFF
Press
I-)
to
turn the RF output signal on or
off.
RF
OFF
appears in the second line of the AMPLITUDE display when the
output signal is
off.
The instrument turns
off
the output signal by switching in the
maximum output attenuation
(130
dB) and setting the vernier to
its lowest setting. This results in approximately
170
dB of carrier
isolation.
2.
ATTN
HOLD
Press
(-1
to
hold the electronic step attenuator at its current
setting.
HOLD
appears in the second line
of
the AMPLITUDE display
when the attenuator hold function
is
on.
When the attenuator hold function is on, amplitude adjustments are
limited to the range
of
the instrument’s vernier. The vernier provides
0.1 dB per step adjustment resolution across its specified
10
dB range.
Vernier
Ranges
The following table
(10
dB Specified Vernier Ranges) provides the
upper and lower limits of each vernier range. The instrument’s
amplitude setting when you press the
c-)
key determines
which vernier range is used.
The vernier
is
allowed
to
over-range and under-range beyond the
limits shown in the table when
(ATTN]
is selected. However,
amplitude settings that exceed the limits may not provide output
levels that are within the accuracy specifications
of
the instrument.
1
b.18
Operation
Reference
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