Semiconductor testers
The LTC-905 curve tracer for testing solid-state device quality, in or out of circuit, in precise voltage or current steps is being made available by Leader. The unit has a sweep frequency of 120Hz with sweep voltage selectable in eight steps from 10 to 100V. It is also equipped with a variable horizontal gain control enabling use with any scope. It is priced at around $200.
Scopes Two 15MHz dual-trace models are included in Tektronix' Telequipment line. Telequipment D1015 and D1016 are dual-trace instruments with automatic, normal and TV triggering; V/division ranges from 5 mV to 20V; time base sweep speeds from 0.2 ps to 200ms/division (times five magnifier increases the maximum sweep speed to 40ns/division. Suggested list prices are $795 for the D1015 and $895 for the D1016.
Regulated power supply PTS Electronics has developed a regulated digital power supply/test instrument for substituting and measuring critical control voltages.
DG-5 regulated voltage control center/digital voltmeter is a high current power supply with a full 5A regulated output over the entire 0 to 30Vdc range, and has three low current voltage supplies, 0-15Vdc/ 50mA, 0-20Vdc/100mA, and 0 30Vdc/200mA. An additional feature is a digital ±.200Vdc voltmeter that when selected, can monitor any of the four output voltages or an external voltage, either positive or negative, 0-200Vdc and has an accuracy to .05 %. The unit has a user net of $269.95.
Bench/portable DMM
Data Tech has introduced the Model 30L 3 1/2-digital multimeter. The unit has a basic dc accuracy of 0.1 % and uses 0.43-inch LED displays. When the battery option is included, the meter displays an indication while charging and an indication when battery voltage is low. When batteries are discharged to a specified low level, the unit is shut off to prevent erroneous readings. The unit sells for $169.
LCD-display DMM
Keithley Instruments has introduced the Model 169, a 5-function, 3 1/2-digit LCD-display DMM. It has a large 0.6-inch display, function and range annunciators, 1-year battery life and is packaged in a bench-sized case. The unit operates on C sized carbon-zinc batteries. Model 169 is available for $149.
General purpose scopes
Philips has announced the introduction of two general purpose 35 MHz oscilloscopes with digital and computer applications. The scopes, PM 3216 and PM 3218 have a maximum sweep speed of 10 ns/div and a trigger hold-off facility that eliminates double triggering on digital signals, making it unnecessary to use the timebase in the uncalibrated mode, according to the manufacturer.
Also see: