7
3.3. Product Introduction
3.3.1. Front Panel
No. Item Description/function
○
1
Mute button Turns off alarm
○
2
Source selection button
Select source to view info: Input A, Input B, or
Load
○
3
Info selection button
Select source info to view: Voltage, current,
frequency, load capacity
○
4
Input selection button Switch input source: Input A Input B
○
5
LCD System status display
○
6
Error indicator
Lit: System malfunction or abnormal
Dim: System normal
○
7
Input indicator B
Lit: Normal input voltage and frequency
Dim: Abnormal input voltage and frequency
Flashing: Indicates higher priority
○
8
Input indicator A
Lit: Normal input voltage and frequency
Dim: Abnormal input voltage and frequency
Flashing: Indicates higher priority
○
9
USB port
Connection for software setup or monitoring
software
○
10
RS-232 port
Connection for software setup or monitoring
software
○
11
Dry contact port Dry Contact
○
12
External communication
slot
For external communication cards, e.g. RS-
485, SNMP