¡¶Product description ¡·
CSP100 product series, adapt to FTTx optic fiber switch-in network, as RFTV broadcast network's RX unit, it is a kind of high index, Low power consumption, high cost performance RFTV optic receiver.
This series products adopt high receiving sensitivity receiving tube and CSP special low noise matching circuit Under3.8% modulation, When transmitting in full channels and with receiving power of -10dBm, CNR still can reach high index of 45dB. It means that to meet the need of users.
Product build-in RF interstage gain adjustment, Receive optic power in the range of +3dBm to -12dBm, all have good linearity. Users can option high CNR and suitable output level according to different receive optic power.
It has four way level output, adapt to FTTB or FTTP many users application.
¡¶Product feature ¡·
 Very low noise(3.8% modulation, -10dBm receive, CNR¡Ý45dB)
Receive optic power in the range of +3dBm to -12dBm, all have good linearity
Inside 47~862MHz, al have good flatness property(FL¡Ü¡À1.0dB)
Built-in interstage gain adjustment, can option high CNR and suitable output level according to different optic power
Four way high level output, can supply service for more users
Zinc. die-casting all-in-one metal shell, supply safeguards to opto-electrical sensing device
Low power consumption, high cost performance ¡¶Main application¡·
FTTB, FTTP, FTTO
FTTC, FTTN
HFC ¡¶Technical index ¡·
Performance |
Index |
Supplement |
| Optic feature |
Operation wavelength |
(nm) |
1280¡«1610 |
Typical application 1550nm¡À10nm |
Receiving power |
(dB) |
+3¡«-12 |
|
Responsibility |
(A/W) |
1310nm ¡Ý0.85 |
|
| 1550nm ¡Ý0.9 |
|
Optical return loss |
(dB) |
¡Ý55 |
|
Optic fiber connector |
|
SC/APC |
|
| RF feature |
Work bandwidth |
(MHz) |
47~862 |
|
Flatness |
(dB) |
¡Ü¡À1.0 |
|
Output level |
(dB¦ÌV) |
88 |
Pin: -5dBm |
Output level adjust |
(dB) |
0~18 |
MGC |
Return loss |
(dB) |
¡Ý12 |
47¡«862MHz |
Output impedance |
(¦¸) |
75 |
|
Output port number |
|
4 |
|
RF tie-in |
|
F British system |
|
| Link feature |
Test channel |
CH |
59CH(PAL-D) |
OMI=3.8% |
CNR1 |
(dB) |
55.6 |
Pin:-2dBm |
CNR2 |
(dB) |
48.5 |
Pin:-8dBm |
CTB |
(dB) |
¡Ü-63 |
Vo¡Ü88dB¦ÌV |
CSO |
(dB) |
¡Ü-63 |
Vo¡Ü88dB¦ÌV |
HUM |
(dB) |
¡Ü-60 |
|
| General feature |
Power supply |
(V) |
DC+12V |
¡À1.0V |
Power Consume |
(W) |
¡Ü3 |
+12VC, 190mA |
Work temp. |
(¡æ) |
-20~+50 |
|
Storage temp. |
(¡æ) |
-40~85 |
|
Work relative temp. |
(%) |
5~59 |
|
Size |
(mm) |
118¡Á73¡Á29 |
(W)¡Á(D)¡Á(H) |
¡¶Matters need attention¡·
It has good characteristic in the range of +3dBm¡«-12dBm of receive optic power.
It can gain high system CNR, but must adjust per output level of built-in PAD to ¡Ü88dB¦ÌV, when receive optic power is in the range of +3dBm¡«-2dBm(all-channel transmission), so that can guarantee system distortion index.
When receive optic power ¡Ü-3dBm, in order to gain high output level, cover more users, inside PAD can adjust to maximum.
RF is four port balanced output, un switch-in system output port, should linking-up 75¦¸ fictitious load. (free choice)
Easy to be maintained, it adapt outlay adaptation power, power supply output voltage is DC+12V¡À1V, working electricity: 500mA
¡¶Test data ¡·
Diagram 1: Built-in PAD is 0dB attenuate:
Pin(dBm) |
-5 |
-6 |
-7 |
-8 |
-9 |
-10 |
-11 |
Vo(dB¦ÌV) |
88 |
86 |
84 |
82 |
80 |
78 |
76 |
CNR(dB) |
52 |
51 |
49.5 |
48.5 |
47 |
45 |
44.3 |
CTB(dB) |
63 |
66 |
68 |
68 |
70 |
68 |
67 |
CSO(dB) |
72 |
72 |
74 |
74 |
69 |
68 |
67 |
Diagram 2: Built-in PAD is 7dB attenuate:
Pin(dBm) |
-1 |
-2 |
-3 |
-4 |
-5 |
-6 |
-7 |
-8 |
-9 |
-10 |
-11 |
Vo(dB¦ÌV) |
89 |
87 |
85 |
83 |
81 |
79 |
77 |
75 |
73 |
71 |
69 |
CNR(dB) |
57 |
56 |
55 |
54 |
53 |
51 |
49.5 |
48 |
47 |
45 |
44 |
CTB(dB) |
62 |
63 |
66 |
66 |
68 |
68 |
68 |
68 |
68 |
68 |
64 |
CSO(dB) |
70 |
72 |
75 |
74 |
73 |
70 |
70 |
68 |
66 |
65 |
62 |
Remark: 1¡¢Test condition: PAL-D59CH, OMI£½3.8%
2¡¢Vo is output level of each port
|
