Click on an area of the image to learn more.
The cooling fan for controlling the temperature inside the VNA. This fan exhausts heated air from inside the analyzer to the outside.
Applicable in E5080A only. This switch must always keep it ON ( | ).
Caution: Do not use this switch to turn off (O) the mains. Doing so may cause the VNA to fail. For more information, see the description of the Line Power.
The receptacle to which the power cable is connected.
Note: To connect the device to a power source (outlet), use the supplied three-prong power cable with a ground conductor. The plug attached to the power cable (on the power outlet side or device side of the cable) serves as the disconnecting device (device that cuts off power supply) of the VNA. The power supply must be cut off to avoid such danger as electric shock, pull out the power cable plug (on the power outlet side or device side of the cable). For the procedure for turning off the mains in normal use, see the description in Power Switch.
When a 10 MHz external reference signal is detected at this port, it will be used as the instrument frequency reference instead of the internal frequency reference.
Notes: When the
external frequency reference signal is input to this connector, the measurement
signal from the VNA is automatically phase-locked to the reference signal.
When an input signal is not present, the frequency reference signal inside
the VNA is automatically used. The ExtRef (in blue back ground color)
on the instrument status bar is displayed when the system is phase-locked
to the external reference signal and IntRef (in gray back ground color)
when not phase-locked.
When using Option 1E5 (high stability frequency reference), connect this
connector to the High Stability Frequency Reference Output Connector (Ref
Oven, Option 1E5 only) by using the BNC(m)-BNC(m) cable included with
the option.
Specification |
Value |
Connector type |
BNC(f) connector |
Input signal |
10MHz ± 10ppm, - 3 to + 10 dBm |
See SCPI command that detects an external reference signal at this connector.
Note: 100 MHz signal for Ref In and Ref Out is available from SCPI command.
A connector for outputting the internal frequency reference signal from the VNA in order to use by others test equipment. 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 VNA and used under this condition.
Specification |
Value |
Connector type |
BNC(f) connector |
Output signal |
10MHz ± 7ppm, 0 dBm ± 3dB |
Output impedance (Typical) |
50 ohm |
Note: 100 MHz signal for Ref In and Ref Out is available from SCPI command.
When Option 1E5 (high stability frequency reference) is installed, the reference signal is output from this connector. See Specifications
Specification |
Value |
Connector type |
BNC connector, female |
Output signal (Typical) |
10MHz ± 1ppm, 0 dBm minimum |
Note: When Option 1E5 (high stability frequency reference) is installed, connect this connector to the External Reference Signal Input Connector (10MHz Ref In) by using the BNC(m)-BNC(m) cable included with the option.
The Auxiliary Input Ports are used to input DC signal for DC signal measurement.
The Auxiliary Output Ports are used to output DC signal for an external device DC control .
This GPIB connector is used only for controlling the VNA from an external controller. Use USB/GPIB interface to control other devices from the VNA. You cannot control other devices from the VNA through this GPIB connector. Learn more.
Through this port, you are able to control the VNA from external controllers. For more information on the measurement system using the USB port, see the Remote Control of SCPI USB Devices Connected to a VNA.
Note: The USB 3.0 type B connector is recommended to get more reliable connection and fast speed.
Specification |
Value |
Connector type |
Universal serial bus (USB) jack, type B (4 contact positions), Female |
Compliance Standards |
USBTMC-USB488 and USB3.0 |
A terminal which an external color monitor (display device) can be connected. By connecting a color monitor to this terminal, the same information shown on the LCD touchscreen of the main body can be displayed on an external color monitor.
This USB hub contains four USB ports to power VNA peripherals. There are also four USB ports on the front panel.
The four USB are provide that can use for connecting to ECal (Electronic Calibration) module, USB, Multiport test set or a printer. Connecting a designated ECal module to this port enables ECal measurements to be taken. Connecting a compatible printer to this port enables screen information on the VNA to be printed.
Limitation: The total power consumption for all eight USB ports is limited to 4.0 amps. If this limit is exceeded, all USB ports are disabled until a device is removed and power consumption falls below the limit. When first connected, ECal modules 8509x and N4431 draw significantly more current than other modules. See Specifications.
See Important First-time USB connection note.
A terminal for connecting the VNA to a LAN enables you to access the solid state drive of this instrument from an external PC or to control this instrument by using SICL-LAN or telnet.
This 10/100Base-T Ethernet connection has a standard 8-pin configuration and auto selects between the two data rates.
The terminal which is an automatic machine (handler) used on a production line is connected. See details.
When enabled, VNA is triggered by signals on this connector.
A connector to which measure trigger signals are input. This connector detects the downward transition from the HIGH state in TTL signals as the trigger signal. To use this connector to generate a trigger, you must set the trigger source to "external" (key operation: Trigger > Main > Trigger Source > External).
Connector type: BNC connector, female. Learn more.
Applicable in E5080B only. When enabled, VNA outputs a 'READY' signal on this connector to other devices. Learn more.
When enabled, VNA outputs signals on these connectors either before or after a measurement. Learn more.
There are two options for SSD.
Non removable SSD option (applicable in E5080A)
Removable SSD option (applicable in E5080A and E5080B)
See Service Guide and to learn how to remove the SSD. (Internet connection required)
See Preventing VNA Solid State Drive Problems
The label showing the information of the Certificate of Authenticity of Windows.
The label showing the product number, serial number and the installed option number. The accessary and system rack options are not listed on this label. (CFGxxx or ATOxxx in the first line is for Keysight Use Only.)
Note: This is not available on the E5081A.
This BNC female connector allows external bias to be applied at the
test ports.
Connect your DC Power Supply to apply Bias Input to the VNA ports through the BNC connectors.
Caution: Do not apply DC voltage exceeding 35 volt.