Agilent Technologies ESG Instrukcja Użytkownika Pobierz pdf (Strona 12)

I/Q baseband generator

(continued)

Digital communications standards

NADC

PDC PHS

TETRA

DECT

GSM (DCS, PCS)

Error vector magnitude

(% rms)

Cont. Burst

N/A

300

25 1,728

200

3 (2, typ)

Cont. Burst

−

Cont. Burst

−

Custom,

Up/Down TCH

Custom,

Up/Down TCH,

Up Vox

Custom,

TCH, Sync

Custom,

Up Control 1 & 2

Up Normal,

Down Normal,

Down Sync

Custom,

Dummy B 1 & 2,

Traffic B,

Low Capacity

Custom, Normal,

FCorr, Sync,

Dummy, Access

Ye s

Global phase error

(rms/pk)

Deviation accuracy

(kHz)

Channel spacing (kHz)

Supported burst types

Scramble capabilities

(Low ACP Mode, dBc, typical)

at adjacent channel

at 1st alternate channel

at 2nd alternate channel

at 3rd alternate channel

Adjacent channel power

(ACP)

Cont. Burst

0.6

/2.2

0.3

/1.3

(typ)

0.7

0.4

1.0

1.4

1.1

1.4

0.9

0.6

0.8

1.3

0.9

1.0

0.9

0.6

0.9

0.7

0.9

0.8

0.5

0.9

1.7

1.3

1.5

Low EVM mode

Low EVM mode (typical)

Low ACP mode (typical)

1. Specifications apply for the, symbol rates, root raised cosine filter, filter factors (a or BbT) and default scaling factor specified for each standard and at power levels

≤+7 dBm (≤+10 dBm, Option UNB).

2. ACP for TETRA is measured over a 25 kHz bandwidth, with an 18 kHz root raised cosine filter applied at power levels ≤+4 dBm (≤+8 dBm, Option UNB).

3. The “channel spacing” determines the offset size of the adjacent and alternate channels: Adjacent channel offset = 1 x channel spacing, 1st Alt. chan.= 2 x channel

spacing, 2nd alt. channel = 3 x channel spacing, etc.

4. TETRA ACP performance is typically 72 dBc with Option H99 in continuous modulation mode.

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 27 28

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