Instrument Status Bar

The instrument status bar displays the status of the entire instrument.

3-1. Instrument Message/Warning

Displays instrument messages and warnings. Instrument messages are displayed in gray and warnings in red. For the meanings of the instrument messages and warnings, see Troubleshooting.

3-2. Measurement Name/Measurement Status

Displays the measurement status of E5052B.

Value	Description
Hold	Measurement on hold (idling).
Man	The trigger source is set to "Manual" and waiting for trigger.
Ext	The trigger source is set to "External" and waiting for trigger.
Bus	The trigger source is set to "Bus" and waiting for trigger.
NVideo	The trigger source is set to "Narrow Video" for transient measurement only and waiting for trigger.
N2Video	The trigger source is set to "Narrow2 Video" for transient measurement only and waiting for trigger.
WVideo	The trigger source is set to "Wide Video" for transient measurement only and waiting for trigger.
Meas	A measurement is in progress.

3-3. DC Control Voltage Calibration Indicator

When DC Control Voltage Calibration is enabled, it is displayed in blue. When disabled, it is displayed in gray.

3-4. DC Control Voltage Status

When the DC control voltage signal output is turned on, the specified voltage is displayed.

3-5. DC Power Voltage Status

When the DC power voltage signal output is turned on, the specified voltage is displayed.

3-6. Attenuator Status

The specified attenuator value is displayed.

3-7. External Reference Signal Phase Lock 1

When the frequency reference signal is input to the External Reference Signal Input Connector (Ref In1) on the rear panel and the measurement signal of the E5052B is phase-locked to the reference signal, ExtRef1 is displayed in blue. The Ref In1 port is available in the phase noise measurement, segment phase noise measurement and transient measurement (narrow-narrow mode).

Value	Description
ExtRef1 displayed in blue	Measurement signal is phase-locked to external reference signal.
ExtRef1 displayed in gray	Measurement signal is not phase-locked to external reference signal.

In the phase noise measurement and segment phase noise measurement, the external reference signal can be used, when the “Ref. Osc.1 Source” function is set to “External”.
When Narrow-Narrow mode in the transient measurement is selected, this connector should be connected with the Ref Out connector. The error message of "291 Ref In 1 input not detected" is displayed when the clock signal is not input into this connector.
When the phase lock function is not operated properly, Unlock is displayed in red. Even when High Stability Frequency Reference Output Connector (Ref Oven)and External Reference Signal Input Connector (Ref In) are interconnected, the measurement signal may not be phase-locked immediately after powered on under a cool-temperature environment (i.e. the display of “ExtRef1” does not change from gray to blue). In this case, wait a few minutes until the instrument warms-up and “ExtRef1” is displayed in blue.

3-8. VBA Status

Displays the state of the execution of the VBA program in the E5052B.

Value	Description
Run	VBA program is still running
Stop	VBA program has stopped

3-9. Service mode

Indicates the service mode status.

Value	Description
SVC (displayed in red)	An abnormal condition has been detected inside the E5052B. The unit may be damaged. Notify the Customer Contact listed at the end of this brochure or the distributor from whom the unit was purchased.
SVC (displayed in gray)	The E5052B is in normal mode.

3-10. Date and Time

Displays the date and time generated by the internal clock. The display format is as follows:

YYYY-MM-DD HH:MM

Where:

YYYY: Year (AD)
MM: Month
DD: Day
HH: MM: Time (0:00 to 23:59)

You can turn the date and time display on/off by: System > Misc Setup > Clock Setup > Show Clock.

3-11. Display Update OFF Indicator

When updating of information displayed on the LCD screen is turned off, this indicator is displayed.

3-12. External Reference Signal 2

When the frequency reference signal is input to the External Reference Signal Input Connector (Ref In2) on the rear panel and the measurement signal of the E5052B is phase-locked to the reference signal, ExtRef2 is displayed in blue. The Ref In2 port is available in all measurement functions of E5052B.

Value	Description
ExtRef2 displayed in blue	Measurement signal is phase-locked to external reference signal.
ExtRef2 displayed in gray	Measurement signal is not phase-locked to external reference signal.

In the phase noise measurement and segment phase noise measurement, the external reference signal can be used when the “Ref. Osc.2 Source” function is set to “External”. In other measurement functions, the external reference signal can be used without any setting.