The traditional analog meters (M Models) have been replaced by digital meters on DM models. Availability of models with analog meters is limited and they will be discontinued in the future.
Optionally, the front panel knobs can be replaced with locking-type screw-driver-adjustable controls by specifying models with suffix "L."
The tabulation of the effective series resistance and inductance in voltage mode and the effective shunt resistance and shunt capacitance in current mode, is done to allow a calculation of the output impedance versus frequency.
JQE are CE Marked per the LVD, EMC and RoHS 2 Directives. See applicableDeclaration of Conformity.