| 1. | Digital signal level 0 - digital signal level 3 ds0 - ds 零阶数字信号和三阶数字信号 |
| 2. | Television - measurement of luminance signal levels 电视.亮度信号电平的测量 |
| 3. | Standard on television : measurement of luminance signal levels 电视标准:亮度信号电平的测量 |
| 4. | Synchronous transport signal level 1 sts 同步传送信号等级 |
| 5. | Sts - 1 synchronous transport signal level 1 同步传输讯号层 |
| 6. | Test signal level monitor function 测试信号电平监视功能 |
| 7. | Noise - quieting input - signal level 抑躁输入信号电平 |
| 8. | Receiver threshold - signal level 接收机门限电平 |
| 9. | Standard input - signal level 标准输入信号电平 |
| 10. | Rslreceived signal level 接收信号电平 |