Anritsu MG3702xA Series, Руководство по обслуживанию

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5-3 Error Messages Chapter 5 — Troubleshooting
5-4 PN: 10370-10372 Rev. B MG3702xA MM
Normal Operation Error and Warning/Status Messages
When an abnormal condition is detected during operation, the MG3702xA displays an error message to
indicate that the output is abnormal or that a signal input or data entry is invalid. It also displays warning
messages to alert you of conditions that could cause an inaccurate signal generator output. Status messages to
remind you of current menu selections or settings are also generated.
Table 5-2 is a summary list of possible error messages that can be displayed during normal operations.
Error Log
The MG3702xA utilizes an error log to facilitate troubleshooting. The log displays problems encountered
during self-test, potential hardware failures, normal operation errors, warning/status messages and remote
devices that fail to initialize properly.
The log is accessed under the
System
key (press
Info
, then
Error Log
). The log holds a maximum of 100 errors,
with most recent errors at the top of the list. Navigation controls are displayed above the log.
The error log displays the general error description, a number identifying the error type, and the date and
time. Select
Details
to view the frequency, power level, temperature, and other internal conditions at the time
of the error. The operator may recall the settings by selecting
Recall Error Setup
which places the MG3702xA
into the same conditions when the error was logged.
To increase the operating speed of the unit under failing conditions, the error reporting may be disabled by
pressing the
System
key, pressing
Maint
, and selecting
OFF
under
Error Log
.
To determine the probable failed assembly causing the error message(s), refer to the Error Tables (starting on
table 5.13) and the circuit descriptions.
Table 5-2. Possible Error/Status Messages during Normal Operation
Error Message Description
Locked
The RF output frequency is phase locked to the internal or external reference.
Error: Lock Error
The RF output frequency is not phase locked to the internal or external reference. The
frequency accuracy and stability of the RF output is greatly reduced. This is usually
caused by an internal component failure. Run self test to verify the malfunction.
Error: Sweep Setup
Displayed when the sweep setup is invalid. In this case, the last valid sweep is still
occurring. Changing the sweep parameters to create a valid sweep setup.
(10,000 points) should clear the error.
INT
The frequency reference is the internal 100 MHz reference oscillator.
EXT
The frequency reference is an external 10 MHz source (connected to the rear panel
external reference input).
Leveled
The ALC is stable.
Unleveled
The ALC is unstable. Displayed when the RF output goes unleveled and is normally
caused by exceeding the specified leveled power rating. Reducing the power level
usually clears the error message.
ERROR
Displayed in the modulation mode title bar when a pulse parameter setting is invalid
for the current pulse modulation state. The Pulse Period, Widths, and Delays must be
set to conform as follows:
D1 + W1 + (D2 - W1) + W2 + (D3 - W2) + W3 + (D4 - W3) + W4
should be

Period - 20 ns
Over Range
Under Range
Displayed in the parameter editing area when the value entered is outside the range
of the instrument. Entering valid values usually clears the error.