Dearborn Wire and Cable


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Specialty Coaxial Cable
734 CENTRAL OFFICE CABLES

Consult factory for minimum requirements and availability. *Max. D.C. Conductor Resistance: 11 ohms/1000 ft. @ 20C *Min. Insulation Resistance: 6 GOhms/1000 ft. @ 20C *Nom. Capacitance: 17.0 PF/ft at 1,000 Hz *Dielectric Strength (conductor to shield): 3.5KV DC for 5 seconds *Structural Return Loss: 30 dB min. between 15 and 95 MHz (100% of cable)

Conductors: Solid silver-plated, tinned or bare copper.

Insulation: High-density foam polyolefin.

Shield: Aluminum/polyester tape plus tinned copper braid (80% minimum coverage).

Jacket: Gray PVC.

Temperature: Suitable for indoor use up to 75C.

Intended for interconnection of transmission and switching systems equipment. *Suitable for DS3 (44.73 Mb/s) transmission rates with maximum reach of 450 ft. (137m).

UL Listed Type CMR. CSA Certified Type CMR.

Part Number	Inner Conductor AWG & Type	Nom. O.D. over Dielectric in. mm	Shield Description	Nom. O.D. in. mm	Nom. Impedance	V/P
D734	20 solid BC	.148 3.76	Bonded	.235 5.97	75 Ohms	80%
D734D	20 solid SPC	.148 3.76	Non-bonded	.235 5.97	75 Ohms	80%
D734T	20 solid TC	.148 3.76	Bonded	.241 6.12	75 Ohms	80%

ELECTRICAL & FREQUENCY PROPERTIES

Electrical Properties	Requirements	Test Specifications
Nominal Attentuation:
Frequency in MHz	Attenuation (dB/100ft)	Standard (Signal)
1.000	.270
1.024	.272
4.224	.506	CEPT-1 (2.048 Mb/s)
5.000	.546	CEPT-1 (8.448 Mb/s)
10.000	.766
17.184	1.012
22.368	1.160	CEPT-3 (34.368 Mb/s)
25.920	1.250	DS-3 (44.73 Mb/s)
44.736	1.650	STS-1 (51.84 Mb/s)
50.000	1.740

Chemical Properties	Requirements	Test Specifications
69.632	2.070
77.76	2.190	CEPT (139.264 Mb/s)
100.000	2.490	STS-3 (155.52 Mb/s)
137.088	2.940
200.000	3.580	DS-4 (274.176 Mb/s)

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