3-6.3 DTMF
Provides a means for encoding DTMF
(Dual-Tone Multi-Frequency) signaling for
testing telephone interface systems. Enter level
as previously described and enter "Code:" in the
field immediately below the "DTMF:" field.
3-6.4 External
Used to set th
e level and enable externally
applied signals from both the MIC and the EXT
MOD IN front panel connectors.
NOTE
In the case of external signals applied to the
EXT MOD connector, the accuracy of this
level displayed is dependent on applying a
fixed signal level of 1 Vpk (2 Vpkpk) to the
EXT MOD IN connector.
3-7 METER AND DISPLAY
The display of m
etered data is presented both
digitally and graphically within the Display zone
in the left portion of the screen (figure 3-12).
This zone is divided into two separate display
areas: Meter area and Display area.
3-7.1 Meter
Select a m
easurement display from the following,
using softkeys from the "Meter:" cursor field.
3-7.1.1 RF Display
This area displays the RF test data
for the radio
under test, subject to the mode selected
(MONITOR, GENERATE, DUPLEX, TRACK
GENERATE, or SWEEP GENERATE).
When the GENERATE mode is selected, the RF
Display area shows generator center frequency as
well as generate level per the RF Control zone
entry. A single cursor field at this location allows
selection by softkey of either millivolts/
microvolts (mV/uV), dBu, or dBm units of
display.
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