Series DR Digital Readout Dials Description The DR series is designed specifically for multi-turn potentiometers. The removable knob exposes end of the component shaft for precise phasing. An excellent complement to our 73JA, 73JB, and 62JA potentiometers. Features + Large, highly readabie numerals * Positive breaking action * Altractive appearance NTT Oey THT UN Operation (3 Digit/10 turn) The left digit indicates the number of complete revolutions of the turning knob and the right two digits indicate the percent of a revolution. The unit registers a total count of 999, Operation (4 Digit/100 turn) The left two digits indicate the number of complete revolutions of the turning knob and the right two digits indicate the percent of a revolution. The unit registers a total count of 9999, Accuracy Graduation lines adjacent to the numerals on the right digit wheel indicate settings of .2% of a revolution of the turning knob. Rotation The indication shall increase with clockwise rotation of the turning knob. Specifications continued, next column Specifications continued Numerals The numerals shall be white on a black background and .130 in. high (3.30 mm). Phasing The dial shall have the features of being phased during the mounting operation by rotating the exposed component shaft to correspond with the desired reading on the dial prior to tightening the set screws. Mounting The spring detented knob shall be removed using a straight pull, exposing two No. 4.40 hex socket set screws for mounting the dial directly to the component shaft. Finish Cover: metal finish knobs Bezel and base: matte black plastic Weight 1.6 ounces (45.36 gm) Figure 1 Series DR, Digi-Dial Dimensions [Stem] 250 +002 oyMETER | [6.36mm] [2.951 | | e 128 +203 dyyeteR [teen] | E328 [roel LK mom I COMPONENT SHAFT HOLE TOLERANCES: UNLESS OTHERWISE NOTED DECIMALS: +.005 [+0.13] ANGLES: +7 BASIC DIMENSIONS ARE. IN INCHES MILLIMETER DIMENSIONS IN BRACKETS Dit i inued, next page 185 Dimensions continued Figure 2 Series DR DIGI-Dial Dimensions (dane) {iain 250) Lh. ie OODLE: Sire) [tdiee] Sidon 038) co J [tomer] Figure 3 oo Series DR Mounting Illustration REMOVEABLE KNOB EXPOSES END OF COMPONENT SHAFT FOR PRECISE PHASING, KNOB COVERS MOUNTING SET SCREWS TO GIVE UNIT SMOOTH, UNBLEMISHED APPEARANCE, FLATS ON KNOB AND HUB KEY PARTS KNOB IS REMOVED BY A FIRM OUTWARD PULL SHAFT OF COMPONENT IS EXPOSED FOR ACCURATE, EFFORTLESS PHASING TO DIAL READING SET SCREWS ATTACH DIAL TO COMPONENT SHAFT Pe aac REP HE oe Catalog Number Description DR300 3 digit, metallic finish DR400 4 digit, metallic finish 186