{"id":368350,"date":"2024-05-23T16:17:26","date_gmt":"2024-05-23T16:17:26","guid":{"rendered":"\/forum\/forums\/topic\/help-me-to-solve-this-error-ns_nuderiv-is-not-a-valid-function\/"},"modified":"2024-05-23T16:17:26","modified_gmt":"2024-05-23T16:17:26","slug":"help-me-to-solve-this-error-ns_nuderiv-is-not-a-valid-function","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/help-me-to-solve-this-error-ns_nuderiv-is-not-a-valid-function\/","title":{"rendered":"Help me to solve this error &#8220;NS_nuderiv is not a valid function&#8221;."},"content":{"rendered":"<p>Hi, I want to find out the frequency response of the photodetector through impulse response from the step response and then perform a Fast Fourier transform (FFT). Here, I use the &#8220;vpd_3dB_bandwidth.isf&#8221; file from the &#8220;Vertical photodetector&#8221; example.&nbsp;<\/p>\n<p>There is an error comes: &#8220;<strong>Error: D:\/Ansys\/NFET\/nanosheet script\/vpd_3dB_bandwidth.lsf line 16: NS_nuderiv is not a valid function or variable name<\/strong>&#8220;<\/p>\n<p><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/05\/23-05-2024-1716480811-mceclip2.png\"><\/p>\n<p><span style=\"text-decoration: underline\"><em><strong>Can you please help me to solve that problem<\/strong><\/em><\/span><em><strong>?<\/strong><\/em><\/p>\n","protected":false},"template":"","class_list":["post-368350","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["348579","33648"],"_bbp_author_ip":["184.24.96.177"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["315"],"_bbp_topic_status":["unanswered"],"_bbp_topic_id":["368350"],"_bbp_forum_id":["27833"],"_bbp_engagement":["33648","348579"],"_bbp_voice_count":["2"],"_bbp_reply_count":["1"],"_bbp_last_reply_id":["368363"],"_bbp_last_active_id":["368363"],"_bbp_last_active_time":["2024-05-23 17:41:35"]},"test":"d11943014ntu-edu-tw"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/368350","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/368350\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=368350"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}