Geovision GV-Hub V2 User Manual

GV-Hub V2

The GV-Hub V2 adds four RS-232/RS-485 serial ports through your computer’s USB port.

The USB solution for serial port extension is perfect for any RS-485 to RS-232 conversion

requirements, such as POS and PTZ applications.

Packing List

1. GV-Hub V2 x 1

2. A to B USB Cable x 1

(1.2 meters / 3.93 feet)

Overview

3. DB9 RS-232 Cable x 4

(1.8 meters / 5.90 feet)

4. Installation CD x 1

5. Installation Guide x 1

Connections

Following provides two examples of using the GV-Hub V2:

1. Connecting POS Systems

The GV-Hub V2 can provide a local connection for up to four POS systems, and deliver

transaction data to the GV-System over a USB cable.

Note: There are four sets of RS-232 / 485 ports (A-D). In a single set, you can only
choose RS-232 or RS-485 port for connection.

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2. Connecting RS-485 Devices

With the GV-Hub V2, the GV-System can connect up to 16 PTZ domes and nine GV-I/O

Boxes (16 ports, 8 ports, 4 ports) simultaneously.

Output

com.H

DO16
DO15
DO14

DO13

com.G

DO12
DO11

DO10
DO9

com.F

DO8
DO7
DO6

DO5

com.E

DO4

DO3
DO2
DO1

RS-485 RX

RX-485 TX

DC 12V

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Input

USB RX
USB TX

H

com.D

DI16
DI15

D

DI14

G

DI13

com.C

DI12

DI11

C

DI10

F

DI 9

com.B

DI 8

DI 7

B

DI 6

E

DI 5

com.A

DI 1
DI 2

A

DI 3
DI 4

GV-IOBOX 16

Extending Transmission over the Distance

The transmission signals between the RS-485 communications become weak over the

distance. To maintain the signals, switch on the Terminal Resistance Switch to reduce the

resistance value. The loger the distance, the smaller the resistance value (Ω) should be

switched on.

Terminal Resistance Switch

1. TR-A, TR-B, TR-C and TR-D is the Terminal Resistance Switch for
RS485-A, RS-485-B, RS-485-C, and RS-485D respectively.

2. Followings are the address assignments of the Terminal Resistance

Switch.

0 1 2 3 4 5 6 7

∞ 120 Ω 60 Ω 40 Ω 30 Ω 24 Ω 20 Ω 17.14 Ω

Installing Drivers

When you connect the GV-Hub V2 to the computer, the Found New Hardware Wizard will

automatically detect the device. Ignore the wizard, and follow these steps to install the

drivers.

1. Insert the installation CD to your computer.

2. Run GvUsb.exe.

3. When this warning window appears, click Continue Anyway. The drivers will be installed

automatically.

To verify the drivers are installed correctly, go to Device Manager. Expanding the Ports field,
you should see the 4 entries for Prolific USB-to Serial Bridge.

Specifications

OS Supported

Serial Interface

USB

Communication
Parameters

Environmental Conditions

Dimensions (W x H x D)

Note: When GV-Hub V2 works with GV-Wiegand Capture, GV-Hub V2 does not support

64-bit Windows versions currently.

32-bit
64-bit

RS-232

RS-485

Serial Line
Protection

Compliance USB 2.0 Backward Compatible
Speed
Parity None, Even, Odd
Data Bit
Stop Bit 1 , 2
Flow Control
Speed 600 bps to 115,200 bps

0~55 Degree C / 32~131 Degree F
5%~95% (Non-Condensing)

103 x 30 x 125 mm / 4.06 x 1.18 x 4.92 in

Windows XP / Vista / 7 / Server 2008

Windows 7 / Server 2008

Signal: DCD, RxD, TxD, DTR, GND,
DSR, RTS, CTS
Connecter: DB9 Male x 4

(A, B, C, D)

Signal: D+, D-

Connector: Terminal Block x 4
(0 ~7, ∞~17.14 Ω)

16 KV ESD for All Signals

Full Speed 12 Mbps

7, 8

RTS/CTS, XON/XOFF

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Ordering Information

84-HUB04-200

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