Agilent Technologies E4428C, Руководство пользователя

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32 Chapter 2
E4438C Vector Signal Generator Overview
Front Panel Overview
31. DATA Connector (Option 001/601 or 002/602)
The female BNC input connector accepts a CMOS externally supplied CMOS compatible signal data input
used with digital modulation applications. The expected input is a CMOS signal where a CMOS high is
equivalent to a data 1 and a CMOS low is equivalent to a data 0.
The maximum input data rate is 50 Mb/s.The data must be valid on the DATA CLOCK falling edges. The
damage levels are > +5.5 volts and <
−
0.5 volts.
On signal generators with Option 1EM, this input is relocated to a rear panel SMB connector.
32. Q Connector
This female BNC input connector accepts an externally supplied, analog, quadrature-phase component of
I/Q modulation. The signal level is = 0.5 V
rms
for a calibrated output level. The input impedance is
50
Ω
. The damage level is 1 V
rms
and 10 volts peak.
To activate a signal applied to this connector, press
Mux
>
I/Q Source 1
or
I/Q Source 2
and then select either
Ext 50 Ohm
or
Ext 600 Ohm
. On signal generators with Option 1EM, this input is relocated as an SMB to the
rear panel.
33. I Connector
This female BNC input connector accepts an externally supplied, analog, in-phase component of I/Q
modulation. The signal level is
= 0.5 V
rms
for a calibrated output level. The input impedance is 50
Ω
.
To activate the in-phase component of the I/Q signal applied to this connector, press
Mux
>
I/Q Source 1
or
I/Q Source 2
and then select either
Ext 50 Ohm
or
Ext 600 Ohm
.
This input connector also accepts the modulating signal for use with the wideband AM selection. The
wideband AM signal depth is a linear function of the I INPUT signal voltage:
• 0.25 volts = 50%
• 0.5 volts = 100%
When turned on, wideband AM automatically selects the I INPUT and configures it for 50
Ω
. This setting is
independent of the
MUX
>
I/Q Source
setting.
The damage level for this connector is 1 V
rms
and 10 volts peak. On signal generators with Option 1EM, this
input is relocated as an SMB to the rear panel.