580 Technical Specifications

TUBE SOCKETS:4, 5, 6, 7-pin, Octal, Loctal, 7, 9 and 10-pin miniature, 7 and 8. pin sub. miniature, compactron, novar, acorn, and 5 and 7-pin nuvistor.

Gm RANGES: 3,000, 10,000, 30,000 and 60,000 micromhos, plus three diode ranges and one VR range.

LEAKAGE TEST: Inter. element leakage indicated direct-ly on meter with maximum sensitivity of 50 megohms.


Filament: 0.6 to 117 volts in 19 steps. (0.6, 1.1, 1.4, 2.0, 2.5, 3.0, 4.3, 5.0, 6.3, 7.5, 10.0, 12.6, 17, 20, 25. 35, 50, 75, and 117 volts). Signal: 280 millivolts rms.

Plate and Screen: 6.3 to 300 volts DC in 12 steps (6.3, L12.6, 22.5, 45, 80, 100, I20, 150, 180, 200, 250 and 300 voltS).

Fixed Bias: Continuously variable in two ranges to 50 volts (0-5 and 0-50). Can be set by means of a calibrated dial or read directly on the meter.

Self Bias Testing Capability: Any desired cathode bias resistor may be inserted in front panel jack for tests under self bias conditions. Bias resistor is bypassed by internal capacitor.

GAS TEST: A new, transistorized gas test circuit makes it possible to measure gas effects in terms of grid cur-rent as Iow as 0.05 microamperes.

DUAL SECTION TUBES: Dual section tubes having electrically equal sections are tested with one setting of selector switches. Test conditions are transferred from one section to the other by a push button.

ROLL CHART: Replaceable, illuminated roll chart covers industrial and entertainment types.

PLATE, GRID AND CATHODE JACKS: Provided on the panel for easy connection to tube caps.

VR TEST: Provides measurement of striking voltage; regulating voltage and current.

CATHODE "LIFE-TEST", Provided by push button re-duction of heater voltage for evaluation of cathode reserve.

SELECTOR SWITCHES: Safety.interlocked to prevent tube damage due to improper set[lng.

POWER REQUIREMENTS: 105 to 125 volts, 60 cycles, 60 watts.