Bosch TC8235GIT Specsheet

-1 dB

-2 dB

-3 dB

-1 dB

-2 dB

-3 dB

10 30 50 70 100 Hz 1 kHz 1MHz 5 MHz

40 dB

80 dB

120 dB

160 dB

10 30 50 70 100 Hz 1 kHz

Video | TC8235GIT Ground Loop Isolation Transformer

TC8235GIT Ground Loop Isolation
Transformer

www.boschsecurity.com

u Ground isolation for 75 Ohm video/data lines

u 10 Hz to 7 MHz bandwidth

The TC8235GIT is a one-to-one isolation transformer
for 75 Ohm coax video/data lines. These units are
designed to eliminate the effects of power line and
spurious noise potentials between ground points on
transmitted signals.

Installation/configuration notes

Signal Transmission

u Low insertion loss

u Insulated BNC connectors

u Excellent discrimination against power line inter-

ground potentials

Ground Isolation

Circuit Diagram of Transformer

Input 75 Ω UNB

Output 75 Ω UNB

63.5
(2.50)

88.9
(3.50)

40.1
(1.58)

59.7
(2.35)

43.2
(1.70)

50.8
(2.00)

1

38.1
(1.50)

2 | TC8235GIT Ground Loop Isolation Transformer

Technical specifications

Electrical

Impedance Levels 75 Ω unbalanced, input and output

Insertion Loss 0.5 dB at 1 kHz

Return Loss Better than 20 dB,120 Hz to 5 MHz

Sine Wave Transmission(Bandwidth)

Amplitude Flat loss is 0.45 dB maximum at 15 kHz, 3 dB

down relative mid-frequency response at 10 Hz
and 7 MHz

Phase Linear with slope of 18 MHz,

1 MHz to 5 MHz

Ground Isolation En/Eo = 115 dB at 60 Hz (decreases with

frequency at 6 dB/octave to 30 dB minimum at
1 MHz

Dielectric Withstanding Voltage

500 Vrms, 60 Hz (from connectors to case and each other)

Mechanical

Weight 223 g (0.5 lb)

Finish Black

Ordering information

TC8235GIT Ground Loop Isolation Transformer

Order number TC8235GIT

Dimensional Outline in mm (inches)

1 Insulated BNC Connector (2)

3 | TC8235GIT Ground Loop Isolation Transformer

Represented by:

Americas: Europe, Middle East, Africa: Asia-Pacific: China: America Latina:

Bosch Security Systems, Inc.
130 Perinton Parkway
Fairport, New York, 14450, USA
Phone: [phone]
Fax: [phone]
[e-mail]
www.boschsecurity.us

Bosch Security Systems B.V.
P.O. Box 80002
5617 BA Eindhoven, The Netherlands
Phone: + 31 40 2577 284
Fax: [phone]
[e-mail]
www.boschsecurity.com

Robert Bosch (SEA) Pte Ltd, Security
Systems
11 Bishan Street 21
Singapore 573943
Phone: [phone]
Fax: [phone]
[e-mail]
www.boschsecurity.asia

Bosch (Shanghai) Security Systems Ltd.
201 Building, No. 333 Fuquan Road
North IBP
Changning District, Shanghai
200335 China
Phone [phone]
Fax: [phone]
www.boschsecurity.com.cn

Robert Bosch Ltda Security Systems Division
Via Anhanguera, Km 98
CEP 13065-900
Campinas, Sao Paulo, Brazil
Phone: [phone]
Fax: [phone]
[e-mail]
www.boschsecurity.com

© Bosch Security Systems 2013 | Data subject to change without notice
2386323723 | en, V1, 04. Oct 2013