5.2 Signal Descriptions
81
5
Chapter 5 External Control (EXT I/O)
LOAD0 to
LOAD6
Select a Panel No. to load and apply a TRIG signal to load the selected Panel
No. and measure. LOAD0 is the LSB, and LOAD6 is the MSB.
When a TRIG signal is applied, if LOAD0 through LOAD6 are unchanged from
the previous trigger event, panel settings are not loaded. In this case, using
external triggering, one measurement is taken as usual when the TRIG
signal is
applied.
• At least 70 ms is required for the settings to change after executing a Panel
Load (the actual time depends on the particular
function, range and sampling
rate
).
• When set to external trigger mode, one measurement is taken upon load com-
pletion.
TRIG When the external trigger, one measurement is taken each time the TRIG signal
transitions from High to Low.
This trigger signal is ignored when internal triggering is enabled.
Trigger functions are also available for statistical calculation, recording to mem-
ory and output of measured values (valid also with internal triggering).
CAL When manual self-calibration is selected with EX.FAST, FAST or MEDIUM sam-
pling rate, self-calibration begins when the CAL signal transitions from High to
Low.
Self-calibration takes about 55 ms.
When SLOW sampling is selected, the CAL
signal is ignored.
See "4.10 Self-Calibration" (p.73).
Input Signals
Panel
No.
LOAD6
LOAD5 LOAD4 LOAD3 LOAD2 LOAD1 LOAD0
0 0 0 0 0 0 0
1
0 0 0 0 0 0 1
2
0 0 0 0 0 1 0
3
0 0 0 0 0 1 1
4
0 0 0 0 1 0 0
5
0 0 0 0 1 0 1
6
0 0 0 0 1 1 0
7
0 0 0 0 1 1 1
8
0 0 0 1 0 0 0
...
122
1 1 1 1 0 1 0
123
1 1 1 1 0 1 1
124
1 1 1 1 1 0 0
125
1 1 1 1 1 0 1
126
1 1 1 1 1 1 0
1 1 1 1 1 1 1
0: HIGH: Open or from 5 V to 24 V
1: LOW: 0 V to 0.9 V
When a TRIG signal is applied with LOAD0 to LOAD6 set to all 1's or all 0's,
no Panel Load occurs.
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