Agilent Technologies Switch/Measure Manual de usuario descargar pdf (Pagina 23)

Cross-band spurious (for example, GSM900 into DCS1800)

In some countries GSM900 and DCS1800 systems exist together and in some

cases base stations for both systems are co-sited. For this reason the ETSI

standards require specific cross-band performance. For example GSM900

transmitters must put a minimum of energy into DCS1800 Tx and Rx bands

and vice-versa.

Graphical view of limits and specifications

Practical measurements

In practice cross-band spurious measurements are grouped with Tx and Rx

band spurious measurements and the same techniques are used. The principles

described in the explanation of theory in pictures and practical measurements

in the spurious section apply.

When to use the measurement

Applied as Tx and Rx band spurious.

Freq (MHz)

Power

(dBc)

Example: conducted, E-GSM900, normal BTS, multi-channel

925

1710

1785

1880

1805

960

–98 dBm

(Applies when cositing

E-GSM and DCS)

–47 dBm

DCS1800 Rx band

DCS1800 Tx band

E-GSM900 Tx band

Channels and slots:

B, M, T

Hopping:

Off

RBW:

30 kHz and 100 kHz

VBW:

=RBW

Detection:

Peak

Sweep

Figure 19. Cross-band spurious, BTS, limits

1 2 ... 18 19 20 21 22 23 24 25 26 27 28 ... 35 36

Comentarios a estos manuales

Sin comentarios

Agilent Technologies Switch/Measure Manual de usuario Pagina 23

Comentarios a estos manuales

Relacionado con productos y manuales para Los conmutadores de red Agilent Technologies Switch/Measure