CV320 CRT
 |
This CRT measures 160x40mm overall and has a 9-pin B9 base. |
This CRT carries the marking Osram 43 in red on the glass.
| Heater voltage | 4V |
| Heater current | 1.1A |
| Max anode 3 voltage | 800V |
| X-plate sensitivity | 100/Va3 mm/V |
| Y-plate sensitivity | 90/Va3 mm/V |
| Screen | YY2 (yellow, ultra short persistence) |
| Desirable spot size * | 1mm |
| Typical operating conditions | |
| Anode 1 and 3 voltage | 800V |
| Anode 2 voltage | 135V |
| Beam current | 3.0µA |
*: Focus quality: with Va3=800 and Va2 and Vg adjusted to give an optimum-focus raster of convenient size and of light output 0.002 candles, the +ve grid drive from Vg (blackout) is noted (= x). Then, with the beam just "blacked-out", a nominally square wave +ve pulse of peak value x volts and of width 100µs at 100cps applied between cathode and grid, and with the high frequency timebase set to produce a line of 2.5cm in the x and y axes successively (with no adjustment of focus between measurements in the two axes), the line width as measured at the centre of the trace must not exceed 1.0mm.
| Pin | Function |
| 1 | X1 |
| 2 | Y1 |
| 3 | Anode 2 |
| 4 | Heater / cathode |
| 5 | Heater |
| 6 | Modulator |
| 7 | Anodes 1 and 3 |
| 8 | Y2 |
| 9 | X2 |
