Specialized - Cathode Ray ·CathodeRay
3DP1S1
RMA 3DP1-S1 specialized electrostatic-focus and electrostatic-deflection oscilloscope CRT with additional radial deflection electrode, green P1 phosphor, 6.3 V 0.6 A heater.
- Sections
- 1
- Base
- -
- Socket code
- -
- Base pins
- 12
- Nominal heater
- 6.3 V / 600 mA
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- -
- Base pins
- 12
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 600 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
Terminal pinout
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
Section ratings
1 physical section, each with unique specifications.
Section 1
Cathode Ray
- Max plate voltage
- 2200 V
RMA 3DP1-S1 specialized oscilloscope CRT, P1 green medium-persistence screen, electrostatic focus and deflection with DJ1-DJ4 paired plates and DJ5 radial electrode. Max anode2 2200 V, anode1 focusing 1100 V, grid never positive, peak anode2-to-deflection electrode 550 V, heater-negative-to-cathode DC 125 V, grid resistor max 1.5 MΩ, deflection circuit impedance max 1 MΩ. Typical Va2 1500/2000 V, Va1 450/575 V, grid cutoff -45/-60 V. DJ1-DJ2 sensitivity 0.153/0.115 mm/V, factor 166/221 V/in; DJ3-DJ4 sensitivity 0.207/0.155 mm/V, factor 123/164 V/in; DJ5 radial factor 245/327 V per inch unit circle. Approx capacitances pF: grid-all 3, cathode-all 7, DJ1-DJ2 2, DJ3-DJ4 2, DJ1-all 9, DJ3-all 7, DJ1 excluding DJ2 7, DJ2 excluding DJ1 7, DJ3 excluding DJ4 5, DJ4 excluding DJ3 6, DJ5-anode2 2.
Source-dependent data
Operating conditions by source
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.