Chapter 2 39
E4438C Vector Signal Generator Overview
Rear Panel Overview
If you configure your signal generator with Option 1EM, this output is relocated and changed from a BNC to
an SMB connector.
6. I OUT Connector (Option 001/601 or 002/602)
This female BNC connector outputs the analog, in-phase component of I/Q modulation from the internal
baseband generator. The nominal output impedance of this connector is 50Ω, DC-coupled. The damage
levels are > +3.5 V and < −3.5 V. The DC origin offset is typically < 10 mV. The output signal levels into a
50Ω load are as follows:
• 0.5 V
pk
, typical, corresponds to one unit length of the I/Q vector.
• 0.69 V
pk
(2.84 dB), typical, maximum crest factor for peaks for π/4 DQPSK with alpha = 0.5.
• 0.71 V
pk
(3.08 dB), typical, maximum crest factor for peaks for π/4 DQPSK with alpha = 0.35.
• Typically 1 V
p-p
maximum.
If you configure your signal generator with Option 1EM, this output is relocated from a BNC to an SMB
connector.
7. COH CARRIER Output Connector
The coherent carrier connector outputs RF that is modulated with FM or ΦM. The output power is nominally
–2 dBm ±5 dB. The output frequency range is from 249.99900001 MHz to the maximum specified
frequency of your signal generator or 4 GHz for Option 506 instruments. If the RF output frequency is
below this range, the coherent carrier output signal will have the following frequency: Frequency of
coherent carrier = (1E9 − Frequency of RF output) in Hz. The damage levels are 20 Vdc and 13 dBm reverse
RF power.
8. Q OUT Connector (Option 001/601 or 002/602)
This female BNC connector outputs the analog, quadrature-phase component of I/Q modulation from the
internal baseband generator. The nominal output impedance of this connector is 50Ω, DC-coupled. The
damage levels are > +3.5 V and < −3.5 V. The DC origin offset is typically < 10 mV. The output signal
levels into a 50Ω load are as follows:
• 0.5 V
pk
, typical, corresponds to one unit length of the I/Q vector.
• 0.69 V
pk
(2.84 dB), typical, maximum crest factor for peaks for π/4 DQPSK with alpha = 0.5.
• 0.71 V
pk
(3.08 dB), typical, maximum crest factor for peaks for π/4 DQPSK with alpha = 0.35.
• Typically 1 V
p-p
maximum.
If you configure your signal generator with Option 1EM, this output is relocated from a BNC to an SMB
connector.
To Next Page
Loading...
Need help?
General
