Agilent Technologies E8267D PSG Bedienungsanleitung PDF herunterladen (Seite 17)

Two-tone

Frequency spacing 100 Hz to 80 MHz (symmetrical about carrier)

IM distortion

250 kHz to 3.2 GHz < –45 dBc for RF levels < 0 dBm (typical)

>3.2 GHz to 20 GHz < –55 dBc for RF levels < 0 dBm (typical)

Measured two-tone

Basic modulation types (custom format)

PSK BPSK, QPSK, OQPSK, π/4DQPSK, 8PSK, 16PSK, D8PSK

MSK User-defined phase offset from 0 to 100°

QAM 4, 16, 32, 64, 256

FSK Selectable: 2, 4, 8, 16 level symmetric

User defined Custom map of up to 16 deviation levels

Symbol rate Maximum deviation

< 5 MHz 4 times symbol rate

5 MHz to 50 MHz 20 MHz

Resolution: 0.1 Hz

I/Q Custom map of 256 unique values

Vector accuracy

Formats: BPSK, QPSK, 16-256QAM

(α= 0.3, Root Nyquist filter, symbol rate 4 Msym/s)

EVM < 1.2% RMS, < 0.8% RMS (typical)

Origin offset

250 kHz to 3.2 GHz –45 dBc (typical)

3.2 to 20 GHz –50 dBc (typical)

FIR filter

Selectable Nyquist, root Nyquist, Gaussian, rectangular

α: 0 to 1, B

T: 0.1 to 1

Custom FIR 16-bit resolution, up to 64 symbols long, automatically

resampled to 1024 coefficients (max)

> 32 to 64 symbol filter: symbol rate ≤ 12.5 MHz

> 16 to 32 symbol filter: symbol rate ≤ 25 MHz

Internal filters switch to 16 tap when symbol rate is

between 25 and 50 MHz

Symbol rate

For external serial data: Adjustable from 1000 symbols/sec to a maximum symbol

rate of 50 Mbits/sec ÷ #bits/symbol

For internally generated data: Adjustable from 1000 symbols/sec to 50 Msymbols/sec.

and a maximum of 8 bits per symbol. Modulation quality

may be degraded at high symbol rates.

Baseband reference frequency Data clock can be phase locked to an external reference.

Input ECL, CMOS, TTL compatible, 50 Ω AC coupled

Internal baseband generator:

real-time mode

(Option 602)

Ref-4 dBm

Samp

Log

dB/

LgAv

W1 S2

S3 FC

(f):

#f>50K

#Swp

#Atten 6 dB

Mkr1 -20.00 MHz

-62.275 dB

Center 20.000 00 GHz

Res BW 470 kHz

VBW 470 kHz

Span 50 MHz

Sweep 1 ms

Marker

-20.000000 MHz

-62.275 dB

1. Measured with Agilent 89441A Vector Signal Analyzer. Valid after executing I/Q calibration, and instrument is

maintained within ± 5 °C of calibration temperature. RF power < 0 dBm. When external inputs are used, vector

accuracy can approach internal performance after system optinization. Recommended external I/Q input level

+ Q

) = 0.3 V

rms

, I/Q modulator attenuator = 10 dB.

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