Video | TC8235GIT Ground Loop Isolation Transformer
TC8235GIT Ground Loop Isolation
Transformer
www.boschsecurity.com
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.
u
Ground isolation for 75 Ohm video/data lines
u
10 Hz to 7 MHz bandwidth
u
Low insertion loss
u
Insulated BNC connectors
u
Excellent discrimination against power line interground potentials
Ground Isolation
Installation/configuration notes
10 30 50 70 100 Hz
1 kHz 1MHz
5 MHz
-1 dB
-1 dB
-2 dB
-2 dB
-3 dB
-3 dB
Signal Transmission
10 30 50 70 100 Hz
40 dB
80 dB
120 dB
160 dB
1 kHz
Circuit Diagram of Transformer
Input
75 Ω UNB
Output
75 Ω UNB
2 | TC8235GIT Ground Loop Isolation Transformer
Technical specifications
88.9
(3.50)
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)
63.5
(2.50)
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
43.2
(1.70)
Dielectric Withstanding Voltage
500 Vrms, 60 Hz (from connectors to case and each other)
Mechanical
40.1
(1.58)
Weight
223 g (0.5 lb)
Finish
Black
Ordering information
TC8235GIT Ground Loop Isolation Transformer
Order number TC8235GIT
59.7
(2.35)
1
50.8
(2.00)
38.1
(1.50)
Dimensional Outline in mm (inches)
1
Insulated BNC Connector (2)
3 | TC8235GIT Ground Loop Isolation Transformer
Represented by:
Americas:
Bosch Security Systems, Inc.
130 Perinton Parkway
Fairport, New York, 14450, USA
Phone: +1 800 289 0096
Fax: +1 585 223 9180
security.sales@us.bosch.com
www.boschsecurity.us
Europe, Middle East, Africa:
Bosch Security Systems B.V.
P.O. Box 80002
5617 BA Eindhoven, The Netherlands
Phone: + 31 40 2577 284
Fax: +31 40 2577 330
emea.securitysystems@bosch.com
www.boschsecurity.com
© Bosch Security Systems 2015 | Data subject to change without notice
2386323723 | en, V2, 05. Feb 2015
Asia-Pacific:
Robert Bosch (SEA) Pte Ltd, Security
Systems
11 Bishan Street 21
Singapore 573943
Phone: +65 6571 2808
Fax: +65 6571 2699
apr.securitysystems@bosch.com
www.boschsecurity.asia
China:
America Latina:
Bosch (Shanghai) Security Systems Ltd. Robert Bosch Ltda Security Systems Division
201 Building, No. 333 Fuquan Road
Via Anhanguera, Km 98
North IBP
CEP 13065-900
Changning District, Shanghai
Campinas, Sao Paulo, Brazil
200335 China
Phone: +55 19 2103 2860
Phone +86 21 22181111
Fax: +55 19 2103 2862
Fax: +86 21 22182398
latam.boschsecurity@bosch.com
www.boschsecurity.com.cn
www.boschsecurity.com