1 Application
1.1 This specification applies to VIDEO-RF modulator with sound submariner
processing signals.
1.2 RF transmission frequency group:
Ch1— 2414MHz
Ch2— 2432MHz
Ch3— 2450MHz
Ch4— 2468MHz
1.3 Modulation type: FM
2 Mechanical Specification
Please refer to Figure 1.
3 Environmental Specification
3.1 Temperature -10℃ ~ +60℃
4 Test Condition
4.1 Ambient temperature:25℃
4.2 Video input voltage:1.0Vp-p,150 (IRE)
4.3 Audio input voltage:1.0Vp-p sine wave signal 1KHz
5 Electrical Characteristics
5.1 DC Characteristics
No. | Item | specifications | Unit | Test Condition | ||
MIN | TYP. | MAX | | |||
5.1.1 SA2418 DC Characteristics | ||||||
1 | Supply Voltage | | 5V or 3.3v | | VDc | |
2 | Current Consumption | | 45 | 50 | mA | |
5.1.2 SA2428 DC Characteristics | ||||||
1 | Supply Voltage | | 5v | | VDc | |
2 | Current Consumption | | 85 | 100 | mA | |
5.2 Video Characteristics | ||||||
1 | Input Impedance | | 75 | | Ω | |
2 | Peak Deviation | | 1.2 | | MHz | MOD=sine wave 400khz 1Vp-p |
No. | Item | specifications | Unit | Test Condition | ||
MIN | TYP. | MAX | | |||
5.3 Audio Characteristics | ||||||
1 | Input Impedance | | 10 | | kΩ | |
2 | Peak Deviation | | 12 | | Khz | 1Vp-p(1khz) |
3 | Pre-emphasis | | 50 | | μsec | |
5.3.2 SA2428 DC Characteristics | ||||||
1 | Supply Voltage | | 5v | | VDc | |
2 | Current Consumption | | 85 | 100 | mA | |
5.4 Output characteristic(TX/RF)
5.4.1 Output characteristic(SA2418 TX/RF) | |||||||
1 | Tx Power | | 17 | | dbm | | |
2 | Audio subcarrier Lever | -24 | -25 | -27 | Dbc | Video and Audio index | |
3 | Audio subcarrier Freq. NCY | L | 6470 | 6500 | 6530 | KHZ | |
| | | | ||||
5.4.2 Output characteristic(SA2428 TX/RF) | |||||||
1 | Tx Power | | 17 | | dbm | | |
2 | Audio subcarrier Lever | -23 | -25 | -27 | Dbc | Video and Audio index | |
3 | Audio subcarrier Freq. NCY | L | 6470 | 6500 | 6530 | KHZ | |
| | | |
6 pin assignment
J1 Pin | Slide Mode |
1 | Audio L(6.5M) |
2 | Video |
3 | Vcc(DC+5V) |
4 | GND |
5 | CH3 |
6 | CH2 |
7 | CH1 |
7 transmitter application circuit
8、Module Tx Dimension