TEW4922
TEW4922 is CEPT/T1 Input Transformer manufactured by Filtran.
..
CEPT/T1
TEW4922 is designed and approved to be used as a receive transformer with MITEL MT89760/-60B and MT89790/-90B devices. Fully encapsulated in epoxy. Also suitable as input/output transformer for other makes of T1/CEPT interface devices.
Input Transformer
Typical applications are:
- -
- Primary rate ISDN network nodes. PBX or puter to T1/CEPT Digital Trunks. High speed data link using T1/CEPT Digital Trunk.
BABT certified for reinforced insulation to EN60950 & EN41003.
Cert #: CR/T/0052 MECHANICAL
6 Line 4
TEW4922-1, -2 @ -3
1 2 3 Device
6 Line
WHITE DOT AT PIN 1
1 2 3
TEW4922-4
75 Ω 5 120 Ω 4
Device
ELECTRICAL SPECIFICATION Devices Application Line Impedance DCR
4922.chp
TEW4922-1 MT89760 MT89760B T1 100 Ω
-2 MT89790 MT89790B CEPT 120 Ω 1.55 1.08 1 : 1 : 1.26
- > 2.8 I.431 G.703 4000V
-3 MT89790 MT89790B CEPT 75 Ω 1.11 0.55 1:1:1
- > 0.70 I.431 G.703 BS6328 4000V
-4 MT89790 MT89790B CEPT 75/120 Ω 1.1 0.7 1 : 1 : 1.26 1:1:1 > 2.8 I.431 G.703 BS6328 4000V
(Ohms)
(1
- 3) (6
- 4)...
