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參數資料
| 型號： | MF614A |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | High Speed Digital Services |
| 中文描述： | 高速數字服務 |
| 文件頁數： | 10/14頁 |
| 文件大?。?/td> | 139K |
| 代理商： | MF614A |
Product Specification
MF614A
Data sheet subject to change without notice
RDPS-MF041(R0)03/21/2002
SHEET 10 OF 14
4.5.2. Off-hook insertion loss:
The insertion loss of a device connected into a given transmission system is defined as
the ratio, expressed in dB, of the load power available ( before and after insertion )
delivered to the output network beyond the point of insertion at a given frequency. In
general, the insertion loss is defined as the ratio, expressed in dB of the power delivered
to a load with the circuit in place and the power delivered to a load without the circuit in
place. The added insertion loss shall be measured using the test up in figure 2. For
measuring POTS band insertion loss for single filter module also for single filter with four
added parallel load filters. General Insertion loss equation can be expressed as follows.
Insertion loss = 20 log
V2 / V1
dB where
V1 = the measured voltage value of load without LPF in circuit.
V2 = the measured voltage value of load with LPF in circuit.
The test setup is shown in drawing below.
Figure 2.
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