- * This is necessary to get the actual range for the encoding digits.
- * When SPoll is implemmented, this can be done via SPoll.
+ * TODO: Wait for SRQ from the DMM when a new measurement is available.
+ * For now, we don't wait for a SRQ, but just do a SPoll and
+ * check the Data Ready bit (0x01).
+ * This is necessary, because (1) reading a value will block the
+ * bus until a measurement is available and (2) when switching
+ * ranges, there could be a timeout.