Troubleshooting a basic connection:
Make sure that BNC cables are firmly attached to the signal generator output port and the reference calibrator input port without any loose connections by checking the connection state of all test cables right away.
Examine each test cable for internal damage. To rule out cable defects generating signal irregularities, replace with brand-new spare test cables and retest.
To prevent signal output anomalies brought on by channel misalignment, make sure all wiring channel numbers match exactly, with no cross-wiring or faulty connections.
Troubleshooting the environment and power supply:
To rule out environmental factors producing signal drift, make sure the temperature in the calibration environment is steady at 23±5°C, the humidity is not higher than 80%, and the equipment is kept away from sources of significant vibration and magnetic interference.
Verify that the equipment is consistently grounded, that the grounding resistance is ≤4Ω, and that there is no significant interference in the power supply circuits of the signal generator and reference calibrator. Cut out any interference from grounding loops.
Verify that both devices have been warmed in the designated environment for at least half an hour. Signal leaps and anomalies are very likely to result from direct calibration without preheating.
Investigating Anomalies Associated with Equipment Status:
Verify that the source of the signal is within the calibration period. To rule out signal irregularities brought on by faulty reference equipment, make sure the reference calibrator is operational and within its calibration validity period.
Verify that the output function is enabled, the output button backlights on the signal generator channels are lit normally, and the output channels haven't been inadvertently turned off.
To rule out signal output anomalies brought on by latent defects in key circuit components, examine the internal hardware self-test results to make sure there are no hardware flaws.
Resolving Anomalies Associated with Calibration Operations:
To ensure that there are no signal anomalies brought on by operational errors and that the operation completely complies with the settings and steps needed by the performance verification manual, double-check the calibration operation procedure.
To ensure that the error calculation logic is accurate and prevent miscalculations of signal output anomalies caused by calculation errors, recalculate the calibration error.
To remove full-range signal output abnormalities brought on by zero-point offset, repeat the zero-point reset operation. Next, recalibrate the full-range accuracy point by point.
Over 95% of calibration signal anomaly problems can be swiftly fixed after troubleshooting utilising the aforementioned techniques, enabling calibration work to proceed without going back to the factory for repairs.
