- * The high-end Brymen models have a configurable reference impedance.
- * When the reference impedance is changed, the DMM sends one packet
- * with the value of the new reference impedance. Both decibel and ohm
- * flags are set in this case, so we must be careful to correctly
- * identify the value as ohm, not dBmW.
+ * The high-end Brymen models have a configurable reference
+ * impedance for dBm measurements. When the meter's function
+ * is entered, or when the reference impedance is changed, the
+ * meter sends one packet with the value of the new reference.
+ * Both decibel and ohm flags are set in this case, so we must
+ * be careful to not clobber the resistance value from above,
+ * and only provide dBm when the measurement is shown and not
+ * its reference.
+ *
+ * The meter's response values also use an unexpected scale
+ * (always off by factor 1000, as if it was Watts not mW).
+ *
+ * Example responses:
+ * bfunc: 00 00 20 80, text ' 0. 800 E+1' (reference)
+ * bfunc: 00 00 20 00, text '-0.3702 E-1' (measurement)