Extron Electronics GLI 2000 2BNC User Manual

User’s Guide

GLI 2000 5BNC
GLI 2000 2BNC

Passive Ground Loop Inhibitors

68-811-01 Rev. B

11 05

Introduction

The GLI 2000 5BNC and GLI 2000 2BNC are heavy-duty, passive
ground loop inhibitors. Ground loop inhibitors eliminate hum
bars (as shown below) and common mode noise caused by
improper video equipment grounding. Ground loop problems
can be caused by using AC power sources with different ground
levels or by plugging high-current equipment into the same
power source as video equipment.

Hum bars

The GLI 2000 series consists of the following models:

GLI 2000 5BNC — The GLI 2000 5BNC inhibits ground loops on
RGBHV, RGBS, RGsB, or RsGsBs video signals. The unit has five
female BNC connectors for input and five for output.

GLI 2000 2BNC — The GLI 2000 2BNC inhibits ground loops on
S-video or composite video signals. The unit has two female
BNC connectors for input and two for output.

Both models feature high bandwidth, high core saturation
voltage to handle even the worst ground loop problems, and
guardrails to protect the connectors.

GLI 2000 Series • Introduction

1

Installation

The GLIs can be mounted on a standard universal 2U rack shelf.

Rack mounting

Mount the GLIs on a standard universal 2U rack shelf
(Extron part #60-032-01). The GLI 2000 5BNC mounts in one of
four locations at the front or the rear of the rack. The GLI 2000
2BNC mounts in one of eight locations at the front or rear of the
rack.

1. Remove rubber feet if they were previously installed on the
bottom of the GLI.

2. To mount the GLI 2000 5BNC on the shelf, use four 4-40 x 3/
16" screws in the corners to secure the GLI to the shelf.

To mount the GLI 2000 2BNC on the rack shelf, use two
4-40 x 3/16" screws in opposite (diagonal) corners to secure
the GLI to the shelf.

3. Install blank panel(s) or other unit(s) on the rack shelf.

4. Attach the rack shelf to the rack using the supplied bolts.

Extron
GLI 2000 5BNC

Ground Loop Inhibitor

(2) 4-40 x 3/16"

screws

Mounting the GLI on a standard 2U rack shelf

GLI 2000 Series • Installation

2

Use 2 mounting holes

(opposite corners)

(4) 4-40
x 3/16"
screws

C

/
O
E

D
I

V

Y

T

/

U

O

O

E
D
I

V

N
I

C
N
B

2

R

0

O

0

T

0

T

A
L

I 1

U

O

L

S

I

O

G

P
O
O
L

D

N
U
O

R

N
I

G

Use 4 mounting holes

Extron
GLI 2000 2BNC

Ground Loop Inhibitor

T

U

P
N
I

H

B

G

T

U

P

R

T

U

O

(each corner)

GLI 1000 5BNC

V