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represented as GROUND and is controlled by the Ground soft key. Pressing the
relay’s corresponding soft key will toggle it between its two available states.
Line Configuration Setting
When the Neutral or Ground relays are set to the CLOSED position they are in a
normal operating condition. When the Neutral or Ground relays are set to the OPEN
position they are in a fault condition that represents a fault in the line input wiring.
When the REVERSE relay is set to ON the relay is in position Band the Line and
Neutral conductors are reversed at the DUT power outputs.
The three relays may be configured into eight different combinations of Line
conditions. The different combinations are represented in the following table.
LINE
CONFIG.
NEUTRAL
REVERSE
GROUND
Relay/
Soft key
Fault
Soft key Relay
Fault
Relay/
Soft key
Fault
1
Open
Yes
OFF
A
No
Open
Yes
2
Open
Yes
ON
B
Yes
Open
Yes
3
Open
Yes
OFF
A
No
Closed
No
4
Open
Yes
ON
B
Yes
Closed
No
5
Closed
No
OFF
A
No
Open
Yes
6
Closed
No
ON
B
Yes
Open
Yes
7
Closed
No
OFF
A
No
Closed
No
8
Closed
No
ON
B
Yes
Closed
No
Summary of Contents for 620L
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