Holland-electronics ST-4000 Manual do Utilizador descarregar pdf (Página 10)

6 Measuring Signal Levels

6.1 SINGLE CHANNEL SIGNAL LEVEL MEASUREMENT - VIDEO, AUDIO or V/A

(Select CATV or VHF/UHF channels first – Refer to Section 2)

Press the 0/2

F key. Press the V/A key to enter this measurement mode.

To change between Video, Audio and V/A, press the 0/2

F key and then the V/A key.

Press the “” or “” key to view desired channel.

LCD will display:

VIDEO Test Mode AUDIO Test Mode V/A Test Mode

6.2 FREQUENCY BASED SIGNAL LEVEL MEASUREMENT

To measure the signal level of a specific frequency between 46MHz and 870MHz

Use the numerical keys and the CLR/ . decimal point key to enter the desired frequency.

Press the ENT key to confirm.

LCD will display:

Selected Frequency

Measured Signal Level

CH002V 55.25MHz

LEVEL: 18.7dBmV

CH002A 59.75MHz

LEVEL: 5.0dBmV

FREQ 87.50MHz

LEVEL: 10.0dBmV

CH002V 55.25MHz

V/A: 13.7 dBmV

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Holland-electronics ST-4000 Manual do Utilizador Página 10