
8-5
•
F CFG
(just below CSO)-Spectrum Configuration: this
stores
setting for display purposes. See Section 8-6.
8.4
SWEEP REFERENCES
Sweep References enables you to select, store, or delete sweep
files. There are three categories of sweep files:
•
FWDSWP (Forward Sweep): (3SR/V/T, StealthTrak only.) In
Forward Sweep the instrument communicates with the Headend,
but does NOT Transmit. A Headend transmitter provides the
sweep signal downstream.
•
REVSWP (Reverse Sweep): (3SRV/T, StealthTrak only.) In
Reverse Sweep the StealthTrak
does
transmit a signal upstream
to the Headend, and communicates with the Headend.
•
SWPLS (Sweepless
Sweep). (SAM 4040D, 3SR/V/T,
StealthTrak units.) In Sweepless
Sweep, the instrument is
completely passive, sweeping its receiver across the allotted
spectrum. Only active carriers in the CATV system will register
in the sweep.
The
Sweep References
menu enables you to select, store, or delete
sweep references. After making a sweep measurement, you can
store a sweep reference. The instrument must be in the Sweep
screen for a minimum amount of time before storing a reference.
When the instrument first enters the Sweep screen, a wait-indicator
icon appears above the sweep graph (upper left). A reference
cannot be saved until the wait indicator terminates.
To work with sweep references, press the green Function key, then
the 6 pqr key to go to the
Sweep References
menu, shown in
Figure 8-3.