TEW4922 Datasheet, PDF (1/1 Pages) Filtran LTD – CEPT/T1 Input Transformer

CEPT/T1
Input Transformer
TEW4922
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.
MECHANICAL
Typical applications are:
• Primary rate ISDN network
nodes.
• PBX or computer 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
Line
6
1
2 Device
4
3
TEW4922-1, -2 @ -3
WHITE DOT
AT PIN 1
com 6
1
Line
75 Ω 5
120 Ω 4
TEW4922-4
2 Device
3
ELECTRICAL SPECIFICATION
Devices
Application
Line Impedance
DCR
(Ohms)
Turns ratio
Inductance
Longitud. Bal.
Return Loss
(mH)
(1 - 3)
(6 - 4)
(1 - 2) : (2 - 3): (6 - 4)
(1 - 2) : (2 - 3): (6 - 5)
(6 - 4)
Dielectric Strength, Volts RMS
Temperatures, Operating
Storage
4000V
0^o to 50^oC
-20^o to 80^oC
TEW4922-1
MT89760
MT89760B
T1
100 Ω
1.55
0.85
1: 1 : 1
—-
> 3.5
T1.408
T1.408
-2
MT89790
MT89790B
CEPT
120 Ω
1.55
1.08
1 : 1 : 1.26
—-
> 2.8
I.431
G.703
4000V
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
Filtran Limited
229 Colonnade Road, Nepean, Ontario, Canada, K2E 7K3
Tel: [phone] Fax: [phone]
2-16