Holland-electronics ST-5128S Instrukcja Użytkownika Pobierz pdf (Strona 18)

Operation

1. Using the numeric keypad, enter the number of the channel to be measured,

and then press then CH key. Or, press the low, mid or top soft key to select a

starting channel from the standard channel list, and then scroll to the desired

channel using the  keys.

2. Press the F4 (ESC) soft key to exit to the sub-menu of the single channel

measurement screen.

C/N Measurement range and Accuracy: (Please refer to the fig.9 graph below.)

1. The x-coordinate is the Power Level of the Signal. The Y-coordinates are

the value of C/N measurement. The tolerance of the measurement can be

determined by the intersect points X-Y coordinate.

2. The reliable area is located on the shaded area as shown on the graph.

3. If the C/N value shows the out ““ sign, this indicates that the C/N value

that was measured is smaller or greater than the meter’s sensitivity.

60 70 75 80 85 90

Fig. 9

C/N Differential measurement range and accuracy

Reliable

measurement Area

Range: ±4dB

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 24 25

Brak uwag

Holland-electronics ST-5128S Instrukcja Użytkownika Strona 18