High Stability Frequency Reference Output Connector (Ref Oven, Option 1E5 Only); External Reference Signal Input Connector (Ref In); Internal Reference Signal Output Connector (Ref Out); 10. Ethernet Port - Agilent Technologies ENA Series User Manual

Overview of Functions
Rear Panel: Names and Functions of Parts
7. High Stability Frequency Reference Output Connector (Ref Oven,
Option 1E5 only)
When Option 1E5 (High stability frequency reference) is installed, the reference signal is
output from this connector.
Connector type: BNC connector, female
Output signal (Nominal): 10 MHz, +2 dBm
NOTE When Option 1E5 (High stability frequency reference) is installed, connect this connector
to the "8. External Reference Signal Input Connector (Ref In)" on page 48 by using the
BNC(m)-BNC(m) cable included with the option.

8. External Reference Signal Input Connector (Ref In)

The reference signal input connector for phase-locking the measurement signal from the
E5070/E5071A to the external frequency reference signal. Inputting the reference signal to
this connector improves the accuracy and stability of the frequency of the measurement
signal from the E5070/E5071A.
Connector type: BNC connector, female
Input signal (Nominal): 10 MHz ±10 ppm, 0 to +6 dBm
NOTE
When the frequency reference signal is input to this connector, the measurement signal
from the E5070/E5071A is automatically phase-locked to the reference signal. When an
input signal is not present, the frequency reference signal inside the E5070/E5071A is
automatically used. The
system is phase-locked to the external reference signal and in gray when not phase-locked.
When using Option 1E5 (High stability frequency reference), connect this connector to the

"7. High Stability Frequency Reference Output Connector (Ref Oven, Option 1E5 only)"

on page 48 by using the BNC(m)-BNC(m) cable included with the option.

9. Internal Reference Signal Output Connector (Ref Out)

A connector for outputting the internal frequency reference signal from the
E5070/E5071A. By connecting this output connector to the external reference signal input
connector of another device, the device can be phase-locked to the internal reference signal
of the E5070/E5071A and used under this condition.
Connector type: BNC connector, female
Output signal (Nominal): 10 MHz, +2 dBm
Output impedance (Nominal): 50 W

10. Ethernet Port

A terminal for connecting the E5070/E5071A to a LAN (Local Area Network). Connecting
this instrument to a LAN enables you to access the hard disk drive of this instrument from
an external PC or to control this instrument by using telnet.
Connector type: 8-pin RJ-45 connector
Base standard: 10Base-T/100Base-TX Ethernet (automatic data rate selection)
48
on the instrument status bar is displayed in blue when the
ExtRef
Chapter 2