Rigol DSA875 Uživatelský manuál stáhnout pdf (Strana 121)

Chapter 2 Front Panel Operation RIGOL

User’s Guide for DSA800 Series

2-69

Table 2-44 Average Number for C/N Ratio Measurement

Parameter Description

Default 10

Range 1 to 1000

Unit N/A

Knob Step 1

Direction Key Step 1

2. Avg Mode

Set the average operation mode to “Exp” or “Repeat” and the default is “Exp”.

 When “Exp” is selected, the result is the exponential average of the

current N (N is specified in “Avg Num”) measurement results.

 When “Repeat” is selected, the result is the arithmetic average of the

current N (N is specified in “Avg Num”) measurement results.

3. Offset Freq

Set the difference between the carrier center frequency and the noise center

frequency. You can use the numeric keys, knob and direction keys to modify

this parameter.

Table 2-45 Frequency Offset for C/N Ratio Measurement

Parameter Description

Default 2 MHz

Range 33 Hz to 2.5 GHz

Unit

GHz, MHz, kHz, Hz

Knob Step Offset Frequency/100, the

minimum is 1Hz

Direction Key Step in 1-1.5-2-3-5-7.5 sequence

4. Noise BW

Set the bandwidth of the noise to be measured. You can use the numeric keys,

knob or direction keys to modify this parameter.

1 2 ... 116 117 118 119 120 121 122 123 124 125 126 ... 234 235

Žádné komentáře

Rigol DSA875 Uživatelský manuál Strana 121