Hioki ST5540, Instruction Manual, Page: 254 / 326

9.2 Connecting to the EXT I/O Terminal
248
Table of LOAD0 - LOAD4 control and corresponding panel numbers
INT.DCV
INT.GND
Output
Outputs the instrument's internal 5 VDC and GND.
EXT.DCV
EXT.COM
Input
Terminal for power input from external equipment
Allowed input voltage range: +5 to +24 VDC
(Reserved) - Do not use this terminal.
Terminal
name
Input/
output
Function
Number of panel
to be loaded
LOAD4 LOAD3 LOAD2 LOAD1 LOAD0
1 1 1 1 1 0
2 1 1 1 0 1
3 1 1 1 0 0
4 1 1 0 1 1
5 1 1 0 1 0
6 1 1 0 0 1
7 1 1 0 0 0
8 1 0 1 1 1
9 1 0 1 1 0
10 1 0 1 0 1
11 1 0 1 0 0
12 1 0 0 1 1
13 1 0 0 1 0
14 1 0 0 0 1
15 1 0 0 0 0
16 0 1 1 1 1
17 0 1 1 1 0
18 0 1 1 0 1
19 0 1 1 0 0
20 0 1 0 1 1
21 0 1 0 1 0
22 0 1 0 0 1
23 0 1 0 0 0
24 0 0 1 1 1
25 0 0 1 1 0
26 0 0 1 0 1
27 0 0 1 0 0
28 0 0 0 1 1
29 0 0 0 1 0
30 0 0 0 0 1
1:High level, 2:Low level
Invalid setting results when all terminals from LOAD0 to LOAD4 are set to "1" or
"0."