Stroboscope 1531-A/B and 1538-A Strobotac Series Page 1 of 2 Features: Strobotac provides two high quality Model 1531-AB models to chose from to ful ll your Flash rates up to 25,000 fpm with electronic stroboscopic needs. accuracy of +1.0% The 1531-AB for most applica ons Unique, rugged carrying case for and the 1538-A for situa ons re- portability quiring very high ash rates. Flash dura on ranging from 0.8 s to 3.0 s for Both instruments o er proven reli- clear, crisp images ability and are s ll manufactured Model 1538-A to the same exac ng GenRad speci- High Speed, adjustable ash rates ca ons. up to 150,000 fpm Direct reading in four ranges with 1.0% accuracy 1531-AB Stroboscope 1538-A Stroboscope Flash dura on from 0.5 s to 3.0 s for clear, crisp images Unique, rugged carrying case for portability Can be ba ery operated DESCRIPTION Compact and accurate. These Versa le synchroniza on: The di erences: strobes are small portable ashing- The 1531-AB is more economically A variety of trigger inputs can be light sources used to measure the priced. used for ash synchroniza on. speed of fast-moving devices or to Contact closures, pulses, or sinu- On the other hand, the 1538 gives produce the op cal e ect of stop- doidal signals will trigger the ash, you six mes the maximum ash ping or slowing high-speed mo on and an output trigger is provided so rate of the 1531, and enables por- for observa on. the stroboscope, in turn, can trigger table opera on with an op onal A build-in system uses the power- another device. rechargeable ba ery. line frequency for quick and easy Single- ash photographs of high- The 1538-A can also be used with checks and adjustment of the ash- speed mo on are a snap with any an op cal extension lamp and high rate calibra on. s ll camera. intensity ash capacitor op ons. Each ash lamp/re ector assem- The 1531-AB and 1538 are designed bly is hinged at the panel and the using the same construc on which re ector swivels 360 degrees, for allows interchangeability of internal complete exibility. assemblies, regardless of the age of The cases have an integral carry the stroboscope. handle and protect the stroboscope in a metal ip-case. 1538-9603 Battery Source and Charger 1538-9601 Lamp for 1531 and 1538 1538-9602 Extension Lamp 1538-9604 High Intensity Flash Capacitor IET LABS, INC. in the GenRad Tradition www.ietlabs.com TEL: (516) 334-5959 (800) 899-8438 FAX: (516) 334-5988 1531-1538 Catalog Pages June 2018Stroboscope 1531-A/B and 1538-A Strobotac Series Page 2 of 2 SPEC I FI CATIONS 1531-AB: 1538-A: Flash Rate: Flash Rate: 110 to 25,000fpm in 3 ranges speeds up to 110 to 150,000fpm in 4 ranges speeds up to 1,000,000 rpm can be 250,000rpm can be measured. measured. Accuracy: Accuracy: 1% of reading after calibration on one range against 50-to-60Hz line 1% of reading after calibration on 670 to 4170fpm range against frequency. 50-to-60Hz line frequency. External Trigger: External Trigger: Input and output connections are phone jacks. Input and output connections are phone jacks. Input: Contact opening, pulse +6V pk-pk, or sinewave 2V rms for Input: Contact closure, pulse +1V pk-pk, or sinewave 0.35V rms f>5Hz. for f>5Hz (3.5V at 10Hz) Output: Negative pulse 500 to 1000V Output: +6V behind 400 . Light Output: Light Output: Beam width 10 degrees at -intensity points. Beam width 10 at -intensity points. Flashes per Duration* Energy** Beam intensity*** Flashes per Duration* Energy** Beam intensity*** minute (s) (watt-seconds) (candela) minute (s) (watt-seconds) (candela) 6 at 690 3 0.5 15 x 10 6 at 690 3 0.5 11 x 10 6 at 4170 1.2 0.09 5 x 10 6 at 4170 12 0.09 3.5 x 10 6 at 25,000 0.8 0.014 1 x 10 6 at 25,000 0.8 0.014 0.6 x 10 6 at 150,000 0.5 0.0023 0.16 x 10 * Measured at 1/3 peak intensity. * Measured at 1/3 peak intensity. ** Electrical input to lamp. ** Electrical input to lamp. *** Measured with silicon photo detector 1 meter from lamp 6 *** Measured with silicon photo detector 1 meter from lamp single- single- ash beam intensity is 18 x 10 candela 6 ash beam intensity with - P4 is 44 x 10 candela Power: Mechanical: Flip-Tilt Case. 100 to 125 V, or 200 to 250 V, 50 to 400 Hz, Dimensions: 16.8 cm H x 27.0 cm W x 15.6 cm D (6.63 x 10.63 x 13 ) 25 W max for 1531, 15 W max for 1538 Weight: 3.5 kg (7.5 lb.) net, 4.6 kg (10 lb.) shipping 1538 can also be powered from 20 to 30 V DC, 12 W max. ORDERING IN FOR MATION Accessories for 1538-A only: Accessories for 1531 and 1538 Catalog Number Item Line Voltage 1538-9602 - 1538-P2 Extension Lamp (V) Calibration data 1531-9430 1531-AB 115 1538-9603 - 1538-P3 Battery and Charger 1538-9601 - 1538-P1 Replacement 1531-9440 1531-AB 230 Strobotron ash lamp, or 1531/1538 1538-9604 - High Intensity -Flash Capacitor 1538-9701 1538-A 115 increases output light output by approximately 6 times. 1538-9702 1538-A 230 Includes: Power cord Calibration certi cate traceable to SI Phone plug for input and output jacks IET LABS, INC. in the GenRad Tradition www.ietlabs.com TEL: (516) 334-5959 (800) 899-8438 FAX: (516) 334-5988 1531-1538 Catalog PIET cat/1531-1538/05-01-06ages June 2018