祐勝SG-2000光接收機
1.
測量光入力DC電壓值，參考電壓轉換表，例1mvDC=0dBmv 2.
依換0dBmv值，選擇所需輸入衰減值，如輸出做100dB，則入力衰減為11dB，內4路分配衰減插入4dB(請參考下一頁) 3.
調整增益可調順時鐘調到最大，回調4dB，出力即為所需94-100Db (內斜率6dB) 分貝毫伏對電壓之轉換表 ０
dBmv=1.0mv，連接頭阻抗為７８Ω
|
dBmv
μv |
DBmv
μv |
dBmv
μv |
DBmv
μv |
||||||
|
-59 |
1.12 |
-29 |
35.48 |
+1 |
1,122 |
31+ |
35,480 |
||
|
-58 |
1.26 |
-28 |
39.81 |
+2 |
1,259 |
+32 |
39,810 |
||
|
-57 |
1.41 |
-27 |
44.67 |
+3 |
1,413 |
+33 |
44,670 |
||
|
-56 |
1.58 |
-26 |
50.12 |
+4 |
1,585 |
+34 |
50,120 |
||
|
-55 |
1.78 |
-25 |
56.23 |
+5 |
1,778 |
+35 |
56,230 |
||
|
-54 |
1.99 |
-24 |
63.10 |
+6 |
1,995 |
+36 |
63,100 |
||
|
-53 |
2.24 |
-23 |
70.79 |
+7 |
2,239 |
+37 |
70,790 |
||
|
-52 |
2.51 |
-22 |
79.43 |
+8 |
2,512 |
+38 |
79,430 |
||
|
-51 |
2.82 |
-21 |
89.13 |
+9 |
2,818 |
+39 |
89,130 |
||
|
-50 |
3.16 |
-20 |
100.0 |
+10 |
3,162 |
+40 |
100,000 |
||
|
-49 |
3.55 |
-19 |
112.2 |
+11 |
3,548 |
+41 |
112,200 |
||
|
-48 |
3.98 |
-18 |
125.9 |
+12 |
3,981 |
+42 |
125,900 |
||
|
-47 |
4.47 |
-17 |
141.3 |
+13 |
4,467 |
+43 |
141,300 |
||
|
-46 |
5.01 |
-16 |
158.5 |
+14 |
5,012 |
+44 |
158,500 |
||
|
-45 |
5.62 |
-15 |
177.8 |
+15 |
5,623 |
+45 |
177,800 |
||
|
-44 |
6.31 |
-14 |
199.5 |
+16 |
6,310 |
+46 |
199,500 |
||
|
-43 |
7.08 |
-13 |
223.9 |
+17 |
7,079 |
+47 |
223,900 |
||
|
-42 |
7.94 |
-12 |
251.2 |
+18 |
7,943 |
+48 |
251,200 |
||
|
-41 |
8.91 |
-11 |
281.8 |
+19 |
8,913 |
+49 |
281,800 |
||
|
-40 |
10.00 |
-10 |
316.2 |
+20 |
10,000 |
+50 |
316,200 |
||
|
-39 |
11.22 |
-9 |
354.8 |
+21 |
11,220 |
+51 |
354,800 |
||
|
-38 |
12.59 |
-8 |
398.1 |
+22 |
12,590 |
+52 |
398,100 |
||
|
-37 |
14.13 |
-7 |
446.7 |
+23 |
14,130 |
+53 |
446,700 |
||
|
-36 |
15.85 |
-6 |
501.2 |
+24 |
15,850 |
+54 |
501,200 |
||
|
-35 |
17.78 |
-5 |
562.3 |
+25 |
17,780 |
+55 |
562,300 |
||
|
-34 |
19.95 |
-4 |
631.0 |
+26 |
19,950 |
+56 |
631,000 |
||
|
-33 |
22.39 |
-3 |
707.9 |
+27 |
22,390 |
+57 |
707,900 |
||
|
-32 |
25.12 |
-2 |
794.3 |
+28 |
25,120 |
+58 |
793,300 |
||
|
-31 |
28.18 |
-1 |
891.3 |
+29 |
28,180 |
+59 |
891,300 |
||
|
-30 |
31.62 |
0 |
1,000 |
+30 |
31,620 |
+60 |
1,000,000 |
||
Bench Setup【佑勝光纖接收機轉換表】
Table 3-2 SG
2000 pad chart
Input
Qutput dBmv
DBm
38
39 40
41 42 43
44 45
46 47 48
49 50
2.0 |
Peceiver
JXPs Qutput
JXPs |
15 6 |
15 5 |
15 4 |
15 3 |
15 2 |
15 1 |
15 0 |
14 0 |
13 0 |
12 0 |
11 0 |
10 0 |
9 0 |
|
1.5 |
Peceiver
JXPs Qutput JXPs |
14 6 |
14 5 |
14 4 |
14 3 |
14 2 |
14 1 |
14 0 |
13 0 |
12 0 |
11 0 |
10 0 |
9 0 |
8 0 |
|
1.0 |
Peceiver
JXPs Qutput JXPs |
13 6 |
13 5 |
13 4 |
13 3 |
13 2 |
13 1 |
13 0 |
12 0 |
11 0 |
10 0 |
9 0 |
8 0 |
7 0 |
|
0.5 |
Peceiver
JXPs Qutput JXPs |
12 6 |
12 5 |
12 4 |
12 3 |
12 2 |
12 1 |
12 0 |
11 0 |
10 0 |
9 0 |
8 0 |
7 0 |
6 0 |
|
0.0 |
Peceiver
JXPs Qutput JXPs |
11 6 |
11 5 |
11 4 |
11 3 |
11 2 |
11 1 |
11 0 |
10 0 |
9 0 |
8 0 |
7 0 |
6 0 |
5 0 |
|
-0.5 |
Peceiver
JXPs Qutput JXPs |
10 6 |
10 5 |
10 4 |
10 3 |
10 2 |
10 1 |
10 0 |
9 0 |
8 0 |
7 0 |
6 0 |
5 0 |
4 0 |
|
-1.0 |
Peceiver
JXPs Qutput JXPs |
9 6 |
9 5 |
9 4 |
9 3 |
9 2 |
9 1 |
9 0 |
8 0 |
7 0 |
6 0 |
5 0 |
4 0 |
3 0 |
|
-1.5 |
Peceiver
JXPs Qutput JXPs |
8 6 |
8 5 |
8 4 |
8 3 |
8 2 |
8 1 |
8 0 |
7 0 |
6 0 |
5 0 |
4 0 |
3 0 |
2 0 |
|
-2.0 |
Peceiver
JXPs Qutput JXPs |
7 6 |
7 5 |
7 4 |
7 3 |
7 2 |
7 1 |
7 0 |
6 0 |
5 0 |
4 0 |
3 0 |
2 0 |
1 0 |
|
-2.5 |
Peceiver
JXPs Qutput JXPs |
6 6 |
6 5 |
6 4 |
6 3 |
6 2 |
6 1 |
6 0 |
5 0 |
4 0 |
3 0 |
2 0 |
1 0 |
0 0 |
|
-3.0 |
Peceiver
JXPs Qutput JXPs |
5 6 |
5 5 |
5 4 |
5 3 |
5 2 |
5 1 |
5 0 |
4 0 |
3 0 |
2 0 |
1 0 |
0 0 |
|
|
-3.5 |
Peceiver
JXPs Qutput JXPs |
4 6 |
4 5 |
4 4 |
4 3 |
4 2 |
4 1 |
4 0 |
3 0 |
2 0 |
1 0 |
0 0 |
|
|
|
-4.0 |
Peceiver
JXPs Qutput JXPs |
3 6 |
3 5 |
4 3 |
3 3 |
3 2 |
3 1 |
3 0 |
2 0 |
1 0 |
0 0 |
|
|
|