Very high performance digital lampmeter. Documentation available on request.

Full manual available here:

https://www.radioelec.com/images/Image/Documentation/Pentavac%20user%20guide.pdf

Technical documentation available on request.

Summary of features:

Size : 425 x 285 x 200 mm
Weight : 8,2 kgs
Mains supply : 220V – 230V / 50-60 Hz ( 115 V on request ) ou 12V through a DC – ac converter
Consommation : 60 à 250 VA maxi
Mains fuse : 3 A slow 5 x 20 mm
Measurement mode: continuous dissipation, managed by 8-bit microcomputer clocked at 20 MHz
Adc sampling: 10 bits monotone (1024 points)
Measurement accuracy: better than 5% +/- 1 digit
Heating voltages *: 1.2 V to 60 V in 2 ranges
Heating current: 3.5 A maximum
Heating voltage accuracy: better than 5% and regulated
Plate voltage: 4 to 600 volts minimum
Grid 1 voltage: + 20 V to - 100 volts minimum
Grid 2 voltage: 0 to 350 volts minimum
Grid 3 voltage: 0 to - 60 V minimum
Maximum measurable plate current: 400 mA
Maximum measurable screen current: 50 mA
Grid 1 voltage display resolution: 0.1 V +/- 1 digit between + 20 V and - 20 V then 1 V between - 20 V and - 100 V
Grid 2 voltage display resolution: 1 V +/- 1 digit
Grid voltage display resolution 3: 1 V +/- 1 digit
Plate voltage display resolution: 1 V +/- 1 digit
Plate current display resolution: 1 mA +/- 1 digit
Short-circuit and connection error protection by current limiting circuits.