X-Git-Url: https://sigrok.org/gitweb/?p=libsigrok.git;a=blobdiff_plain;f=include%2Flibsigrok%2Flibsigrok.h;h=bb0b4fe7666d8340b030ad6b8c8cce37b02ab0fa;hp=508ea3bd0ed7cd75b8e5d3d16f95479fcf8a8cad;hb=43ff1110fb317fba796f942bbc73c37a95973b8b;hpb=5e7377f4c75ed3fdfc391be86b83a2266934e20a

diff --git a/include/libsigrok/libsigrok.h b/include/libsigrok/libsigrok.h
index 508ea3bd..bb0b4fe7 100644
--- a/include/libsigrok/libsigrok.h
+++ b/include/libsigrok/libsigrok.h
@@ -956,6 +956,8 @@ enum sr_configkey {
 	 * Channel regulation
 	 * get: "CV", "CC" or "UR", denoting constant voltage, constant current
 	 *      or unregulated.
+	 *      "CC-" denotes a power supply in current sink mode (e.g. HP 66xxB).
+	 *      "" is used when there is no regulation, e.g. the output is disabled.
 	 */
 	SR_CONF_REGULATION,