|
Technical Specifications
- 21" CPT - JCTEL A51JSY61X03(H)
 •
Electrical Data
• Optical Data
• Mechanical Data
• Ratings
• Examples of Use of Design Ranges
• Yoke Data
• Sagittal Heights and Mounting Lug Height
•
Electrical Data
| Electron Gun |
Unitized (one piece) triple aperture
electrodes centre beam (Green), side beam (Blue, Red) |
Heater Current at 6.3 volts |
680mA |
| Focusing Method |
Electrostatic |
Focus Lens |
Bi-Potential,Uni-Potential |
| Convergence Method |
Magnetic |
Deflection Method |
Magnetic |
| Deflection Angles (Approx.):
Diagonal |
90 deg. |
Direct Interelectrode Capacitance
(Approx.) Grid No.1 to all other electrodes |
12 pF |
| All cathodes at all other electrode |
15 pF |
Grid No.3 to all other electrodes |
5 pF |
| External conductive coating
to anode |
2000 max. pF, 1500 min. pF |
- |
- |
•
Optical Data
| Light Transmission at Centre(Approx.) |
52.0% |
Screen on Inner Surface of
Faceplate |
Aluminized, Tricolour, Phosphor-Stripe,
Black Matrix Type Stripe Screen |
| Phosphor(three separate phosphor,collectively) |
P22-New Rare-Earth (Red) Sulphide(Blue
& Green) Type |
Arrangement |
Vertical Line Trios |
| *Spacing: Horizontal |
0.74 mm (0.029 in.) |
*Spacing: Vertical |
0.63 mm (0.025 in.) |
Note: * Spacing
between centres of adjacent stripe trios (Approx.)
• Mechanical Data
| Overall Length |
436.7 ± 6.5 mm (17.19 ±
0.26 in.) |
Screen** : Diagonal |
508.00 mm ( 20.00 in.) |
Screen**:
Horizontal Axis |
406.4 mm ( 16.00 in.) |
Screen**: Vertical axis |
304.8 mm ( 12.00 in.) |
| Screen**: Area |
1239 sq. cm |
Base Designation |
B 10 - 277 |
| Bulb: Contact Designation |
Recessed Small Cavity Cap (EIA
No. J1 - 21 ) |
Bulb: Funnel |
EIAJ J540F1 |
| Bulb: Panel |
EIAJ JP540AU11 |
Pin Position Alignment |
Pin No.10 aligns approx.with Anode
contact |
| Implosion Protection |
Heat shrink type |
Weight (Approx.) |
15.5 Kg (34.2 lbs) |
Note: ** Minimum
Useful Screen Dimension (Projected)
• Ratings
Unless otherwise specified, voltage values are for
each Gun and values are positive with respect to Cathode
| Anode Voltage |
27,500 absolute max. volts 20,000
min. volts |
Total Anode Current, Long-term
Average |
1100 max. micronA |
| Grid-No.3&5 (Focusing Electrode)
Voltage |
10,000 max. volts |
Peak Grid No.2 Voltage, Including
Video Signal Voltage |
1,000 max. Volts |
| CV: Positive Bias Value |
400 max. Volts |
CV: Positive operating cut
off value |
200 max. Volts |
| CV: Negative Bias Value |
0 max. Volts |
CV: Negative PeakValue |
2 max. Volts |
| Heater Voltage (AC or DC) |
6.9 max. Vrms/5.7 max Vrms |
Surge of Heater Voltage (within
100 msec) |
9.5 max. Vrms |
| PHCV: Heater negative with
respect to Cathode |
200 max. Volts |
PHCV: Heater positive with
respect to Cathode
AC component |
200 max. Volts |
PHCV: Heater positive with
respect to Cathode
DC component |
0 max. Volts |
Peak Heater - Heater Voltage
(Operating with pulse of F.B.T) |
22 max. Vp-p |
Note: CV =
Cathode Voltage PHCV = Peak Heater-Cathode Voltage
• Examples of Use
of Design Ranges
Unless otherwise specified, voltage values are for
each Gun and are positive with respect to Grid No. 1
| Anode Voltage |
25,000 Volts |
| Grid No. 3 & 5 (Focusing
Electrode) |
7,880 to 8,870 Volts |
| Grid No. 2 Voltage when circuit
design utilises Cathode Voltage of 160 volts for visual extinction
of focused spot |
460 to 820 Volts |
| Heater voltage (Note 1) : Under
operating condition |
6.3 Vrms |
•
Yoke Data
| Electrical - Horizontal Deflection
Coils: Inductance (at 1 Vrms and 1 KHz) |
1.93 ± 5 % mH |
| Electrical - Horizontal Deflection
Coils: Resistance (at 200 C) |
2.20 ± 10 %ohm |
| Electrical - Vertical Deflection
Coils: Inductance (at 1 Vrms and 1 Khz) |
30.0 ± 10 % mH |
| Electrical - Vertical Deflection
Coils: Resistance (at 200 C) |
14.5 ± 10 % ohm |
| Max Ratings: Absolute Max.Values
- Peak Pulse Voltage Across Horizontal Coils at 15,750 Hz for
a pulse duration of 12 micron sec |
14,000 max.V |
| Peak Pulse Voltage Across Vertical
Coils at 50 Hz for pulse duration of 0.7 msec |
200 max. V |
| Peak Pulse Voltage including
DC component between Hor. and Ver. coils |
1400 max. V |
•
Sagittal Heights and Mounting Lug Height
One of the four Mounting Lugs may deviate (2.0 mm max.) from the place
of the other three within the 2.0 mm tolerance. This deviation is
incorporated in the 2.0 mm tolerance. |
