1984

Launched in 1984, the 1100 series peak level meters came in a compact 40 x 190 mm standard panel-mount metal cassette providing several versions with different features. Beside a unit with pure peak level display, other models were equipped with additional peak memory, switchable +20 dB gain, and build-in correlator for monitoring the phase relationship between the displayed channel.
Common for all units was the high-resolution gas plasma display with two 201-segmented (127 mm scale length) resp. two 301-segmented (150 mm scale length) bargraphs to ensure a highly precise display of the measured signal values. The measuring range of the horizontal or vertical sandwich scale followed the DIN 45406 recommendation, but also was extended. Later on, models including British IIa and Nordic N9 scales were added.
The image shows a 1109 with extended horizontal DIN scale (301 segments, measuring range -50 to +10 dB).