GW Instek GPT-9900 series User Manual - Manual (Page 161)

FAQ
161
If “Interlock” is enabled, the interlock key must be inserted into the
signal I/O port on the rear before a test can be started. See page 110
for details.
Lastly, ensure that the Start Ctrl setting is correctly configured in
the Common Utility menu. For example, to enable the START
button to start a test, ensure that the Start Ctrl setting is set to
FRONT PANEL. See page 102 for details.
The accuracy does not match the specification.
Make sure the tester is powered on for at least 30 minutes, within
+15°C~+35°C. This is necessary to stabilize the unit to match the
specification.
For more information, contact your local dealer or GWInstek at
www.gwinstek.com / [email protected].