35
With Option UN7
BER data, BER clock Accepts CMOS
1
or 75 Ω input. Polarity is selected.
BER gate Clock duty and inputs cycle is 30% to 70%. [SMB, rear panel]
BER sync loss output Outputs a CMOS
1
signal that is low when sync is lost.
Valid only when measure end signal is high. [Auxiliary I/O
connector, rear panel]
BER no data output Outputs a CMOS
1
signal that is low when no data is detected.
Valid only when measure end is high. [Auxiliary I/O
connector, rear panel]
BER error-bit-output Outputs CMOS
1
signal when error bit is detected. Pulse width
matches the input clock. [Auxiliary I/O connector, rear panel]
BER test result output Outputs a CMOS
1
signal that is high for fail and low for pass.
Valid only on measure end signal falling edge. [Auxiliary I/O
connector, rear panel]
BER measure Outputs a CMOS
1
signal that is high during measurement.
end output Trigger events are ignored while high. [Auxiliary I/O
connector, rear panel]
BER measure trigger Accepts CMOS
1
signal to initiate BER measurement.
Polarity is selectable; available when trigger source is
selected as “AUX I/O”. Damage levels are The damage
levels are –0.5 to +5.5 V. [Auxiliary I/O connector, rear panel]
With Option 300
321.4 MHz input Accepts a 321.4 MHz IF signal for GSM/EDGE/loopback
testing. Input amplitude range -7 dBm to -22 dBm.
Nominal input impedance 50 ohms.
[SMB, rear panel]
LAN connector
LAN communication is supported by the signal generator via the LAN connector. It is
functionally equivalent to the GPIB connector. The LAN connector enables the signal
generator to be remotely programmed by a LAN-connected computer. The distance
between a computer and the signal generator is limited to 100 meters [10BaseT].
For more information about the LAN, refer to the Getting Started chapter in the
Programming Guide.
Data transfer speeds
2
LAN [FTP] file transfer to volatile memory (700 KB/sec)
to hard drive (500 KB/sec)
LAN [SCPI] command transfer to volatile memory (146 KB/sec)
to hard drive (128 KB/sec)
Internal file transfer from hard drive to volatile memory (1280 KB/sec)
Agilent’s IO Libraries Suite ships with the E4438C to help you quickly establish an error-
free connection between your PC and instruments – regardless of the vendor. It provides
robust instrument control and works with the software development environment you choose.
1. Rear panel inputs and outputs are 3.3 V CMOS, unless indicated otherwise. CMOS inputs will accept 5 V CMOS, 3 V CMOS, or TTL voltage levels.
2. Parentheses denote typical performance.
General Characteristics
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