GenRad Contents Applic. Products Selection Index prod ucts p. 2 pp. 4-8 pp. 12-87 pp. 9-11 p. 89 pp. 50-87 Electronic Stroboscopes p. 1 ® ® 1 1531-AB and 1538-A Str 531-AB and 1538-A Stro obotac botac S Se er ries ies Strobotac provides two high quality models to chose from to fulŢ ll your electronic strobo- scopic needs. The 1531-AB for most applica- tions and the 1538-A for situations requiring very high ţ ash rates. Both instruments offer proven reliability. Model 1531-AB and For machine maintenance 1538-A Strobes Real time inspection of moving parts Printing press applications MODEL 1538-A: Motor troubleshooting High speed, adjustable fl ash rates up to 150,000 For stopping motion fpm provide direct reading in four ranges with ±1.0% MODEL 1531-AB: accuracy Flash rates up to 25,000 fpm with accuracy of +1.0% Flash duration from 0.5 μs to 3.0 μs for clear, crisp Unique, rugged carrying case for portability images Flash duration ranging from 0.8 μs to 3.0 μs for Unique, rugged carrying case for portability clear, crisp images Can be battery operated Compact and accurate. These strobes are small portable fl ash- Versatile synchronization: A variety of trigger inputs can be used ing-light sources used to measure the speed of fast-moving devices for fl ash synchronization. Contact closures, pulses, or sinewave or to produce the optical eff ect of stopping or slowing high-speed signals will trigger the fl ash, and an output trigger is provided so the motion for observation. A build-in system uses the power-line stroboscope, in turn, can trigger another device. Single-fl ash photo- frequency for quick and easy checks and adjustment of the fl ash- graphs of high-speed motion are a snap with any still camera. rate calibration. Each fl ash lamp/refl ector assembly is hinged at the The diff erence: The 1531 is more economical to buy. On the other panel and the refl ector swivels 360 degrees, for complete fl exibility. hand, the 1538 gives you six times the maximum fl ash rate of the The cases have standard sockets (0.25 x 20 threads/inch) for tripod former, and enable portable operation with a rechargeable battery. mounting. The 1538-A can also be used with an optical extension lamp. * 1538-P2 Extension Lamp; accessory for the 1538-A IET LABS, INC. in the GenRad Tradition www.ietlabs.com TEL: (516) 334-5959 • (800) 899-8438 • FAX: (516) 334-5988 534 Main Street, Westbury, NY 11590 IET cat/1531-1538/05-01-06 72 GenRad Con tents Applic. Products Selection Index prod ucts p. 2 pp. 4-8 pp. 9-11 pp. 12-87 p. 89 pp. 50-87 Electronic Stroboscopes p. 2 of 2 ® ® 1 1531-AB and 1538-A Str 531-AB and 1538-A Stro obotac botac S Se er ries ies SPECIFICATIONS SERIES 1531-AB: SERIES 1538-A: Flash Rate: 110 to 25,000fpm in 3 ranges; speeds up to Flash Rate: 110 to 150,000fpm in 4 ranges; speeds up to 1,000,000 rpm can be measured. 250,000rpm can be measured. Accuracy: ±1% of reading after calibration on one Accuracy: 1% of reading after calibration on 670-to- range against 50-to-60Hz line frequency. 4170fpm range against 50-to-60Hz line frequency. External Trigger: Input and output connections are phone jacks. External Trigger: Input and output connections are phone jacks. Input: Contact opening, pulse ≥ +6V pk-pk, or sinewave ≥ 2V rms for f>5Hz. Input: Contact closure, pulse ≥ +1V pk-pk, Output: Negative pulse ≥ 500 to1000V. or sinewave ≥ 0.35V rms for f>5Hz (3.5V at 10Hz) Light Output: Beam width 10º degrees at ½-intensity points. Output: ≥ +6V behind 400 Ω. Light Output: Beam width 10º at ½-intensity points. Flashes per Duration* Energy** Beam intensity*** Flashes per Duration* Energy** Beam intensity*** minute (μs) (watt-seconds) (candela) minute (μs) (watt-seconds) (candela) 6 6 at 690 3 0.5 15 x 10 at 690 3 0.5 11 x 10 6 6 at 4170 1.2 0.09 5 x 10 at 4170 12 0.09 3.5 x 10 6 6 at 25,000 0.8 0.014 1 x 10 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; *** Measured with silicon photo detector 1 meter from lamp; single- 6 single-fl ash beam intensity is 18 x 10 candela 6 fl ash beam intensity with - P4 is 44 x 10 candela Features Power: 100 to 125 V, or 200 to 250 V, 50 to 400 Hz, 25 W Dimensions: 16.8 cm H x 27.0 cm W x 15.6 cm D max for 1531, 15 W max for 1538; 1538 can also be (6.63" x 10.63" x 13") powered from 20 to 30 V DC, 12 W max. Weight: 3.5 kg (7.5 lb.) net, 4.6 kg (10 lb.) shipping Mechanical: Flip-Tilt Case. ORDERING INFORMATION Catalog Number Item Voltage Model (V) INCLUDES: 1531-9430 1531-AB 115 Calibration Certifi cate Traceable to NIST 1531-9440 1531-AB 230 Adjustable Neck Strap Phone plug for input and output jacks 1538-9701 1538-A 115 Power Cord 1538-9702 1538-A 230 OPTIONS Calibration Data Accessories for 1538-A only: 1538-9601 1538-P1 Replacement Strobotron Flash Lamp, 1538-9602 1538-P2 Extension Lamp for 1531/1538 1538-9603 1538-P3 Battery and Charger 1538-9604 High Intensity -Flash Capacitor; increases output IET LABS, INC. in the GenRad Tradition www.ietlabs.com TEL: (516) 334-5959 • (800) 899-8438 • FAX: (516) 334-5988 534 Main Street, Westbury, NY 11590 1531-38/p2/2/05-01-06 73