Black Box Fradswitch-16A, Руководство пользователя

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FRADSWITCH-8A, FRADSWITCH-16A, FRADSWITCH-24A
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Figure 3-1. Fradswitch-8A boards.
3.3.2 I
NTERNAL
J
UMPERS
WARNING!
In order to avoid the possibility of electrical shock, always turn the power switch off and
disconnect the power cable from mains before opening the Fradswitch.
The Fradswitch has two internal jumpers, designated JP1 and JP2. Refer to Figure 3-2 and use the following
information.
CH GND jumper, JP1 This jumper controls the connection between the signal ground lines to the chassis
ground lines. The appropriate position must be determined by the installation
manager. The jumper has two positions: GND CON (signal ground connected to
chassis ground) and DIS (signal ground disconnected from chassis ground). The
factory setting is DIS.
B
PW
R
1
RESET
FRADSWITCH-8A
COVER
EXTENSION
BOARD
INTERFACE
BOARD
MAIN
BOARD
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
CHANNELS
TEST
OVF
TEST
A
C
SYNC
B
A
C
MAIN