CATV Measurements
2715 User Manual
5–55
2. Press [6] [1] to select Automatic mode.
SET UP TEST FREQUENCIES menu (item 5) is added to the menu. These
frequencies represent points where beats are expected to occur relative to the
visual carrier.
3. Press [0] and enter the first beat frequency either as an offset from the visual
carrier or as an absolute frequency.
4. Press [1] and enter the second beat frequency.
5. Press [2] and enter the third beat frequency.
6. Press [3] and enter the fourth beat frequency.
7. Press [4] and enter the fifth beat frequency.
8. Press [5] to use the default frequencies.
9. Press [BKSP] [BKSP] [0] to run the measurement.
The instrument measures the visual carrier peak for a reference, then sets the
span/div setting such that the measurements are made over a 100 kHz span
on either side of the frequency position. The instrument measures the first,
second, third, fourth, and fifth beats. After the measurement is complete, or
after the routine is aborted, the worst case result is displayed in the spectral
display.
10. Press [CATV/APPL] to display the CTB or CSO menu.
11. Press [1] to store the results of the last measurement.
After a short period of time, the message RESULTS STORAGE COM-
PLETE is displayed.
12. Press [2] to display results of the last measurement performed.
A display resembling Figure 5–8 comes up. You can either view other stored
results by pressing [W], or stop viewing the results by pressing [Z].
13. Press [3] to print the results of the last measurement performed. A printer
must be connected to the 2715.
NOTE
. You can print measurement results only when the RS-232 interface is
installed in the 2715. The GPIB interface does not support the print function.
Be sure to select handshaking ([UTIL] [4] [0] [2] [5]) to match that expected by
the printer or long jobs may not print completely.
14. Press [4] to print all stored results of the measurement. A printer must be
connected to the 2715.
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