Agilent Technologies E8267D PSG Instrukcja Użytkownika Pobierz pdf (Strona 14)

External I/Q inputs

Input impedance switched 50 or 600 Ω (nominal)

Input range

Minimum 0.1 V

rms

, maximum 1V

peak

Flatness ± 1 dB within ± 40 MHz of carrier (with ALC off) (typical)

Measured I/Q frequency response

I/Q adjustments

I & Q offsets External inputs (600 Ω) ± 5 Volts

External inputs (50 Ω) ± 50 %

Internal baseband generator ± 50 %

I/Q attenuation 0 to 40 dB

I/Q gain balance ± 4 dB

I/Q quadrature skew ± 10° range (typical)

Low pass filter Selectable 40 MHz or through

I/Q baseband outputs

Differential I, I bar, Q, Q bar

Single ended I, Q

Frequency range DC to 40 MHz

Output voltage into 50 W 1.5 V

p-p

(typical)

DC offset adjustments ± 3 V

DC offset resolution 1 mV

Low pass filter Selectable 40 MHz or though

Vector modulation

Offset from carrier (GHz)

Conversion loss (dB)

-5

-10

-15

-0.15 -0.10 -0.05 0.00 0.05 0.10 0.15

Offset from carrier (GHz)

Conversion loss (dB)

-5

-10

-15

-0.15 -0.10 -0.05 0.00 0.05 0.10 0.15

Offset from carrier (GHz)

Conversion loss (dB)

-5

-10

-15

-0.15 -0.10 -0.05 0.00 0.05 0.10 0.15

Offset from carrier (GHz)

Conversion loss (dB)

-5

-10

-15

-0.15 -0.10 -0.05 0.00 0.05 0.10 0.15

1.5 GHz 3 GHz

12 GHz 20 GHz

1. For optimum signal quality, the I and Q inputs should be 0.7 V

peak

, with (I

+ Q

) + 150 mV

rms

. Different

RMS levels are accommodated by adjusting the internal I/Q modulator attenuator, which may be either

manually or automatically set. The minimum input level required to maintain RF level accuracy is

+ Q

) = 0.1 V

rms

2. Sine wave response, measured with input level = 100 mV

rms

on one channel, and ALC off.

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 23 24

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