14
AT526 User's Guide
BUS (RS-232)
Table 4‐1 Trigger Setting
Trigger Mode Description
INT Continuously
repeats
the measurement cycle.
MAN
Performs one cycle of measurement each time you press the [Trig] key.
EXT
Performs one cycle of measurement each time a rising pulse is input to
the handler external trigger input pin on the rear panel.
BUS
Performs one cycle of measurement each time it receives a trigger
command sent via RS-232.
Procedure to setting the trigger
:
Step 1
Press [Meas] key to enter <MEAS DISPLAY>Page
Step 2
Use cursor keys to select [TRIGGER] field
Step 3
INT
Automatic Internal trigger
MAN
Manual Trigger by pressing [Trig] key
EXT
External
Trigger
Mode
BUS
BUS Trigger by RS232 SCPI command
4.1.2
[RANGE]
SCPI Command:
FUNCtion:RANGe {<range number>,min,max}
SCPI Command:
FUNCtion:RANGe:MODE {AUTO,HOLD,NOMinal}
SCPI Query Command:
FUNCtion:RANGe?
SCPI Query Command:
FUNCtion:RANGe:MODE?
AT526 has three resistance range modes and two voltage range.
Resistance Ranges:
Auto range, Manual range and Nominal range
Table 4‐2 Resistance Range Mode
Range
Description
Pros
Cons
AUTO
Automatically
select the best range according
to impedance
Range is automatically set.
Very
convenient
Test speed
is slower
than
manual
ranging,
HOLD
The instrument will
always
uses the user-specified range
Highest
speed
Set the
range
previously
NOMINAL
Automatically
select the best range according
to nominal value.
Best mode
for
sorting.
Only
available
in sorting
mode
Table 4‐3 Resistance Measurement Ranges of AT526
Range
Range Name
Measurement Range
7
30k
Ω
3.2k
Ω～
33k
6
3k
Ω
320
Ω～
3.3k
5
300
Ω
32
Ω～
330
4
30
Ω
3.2
Ω～
33
3
3
Ω
320m
～
3.3
2
300
Ω
320
Ω
~ 330m
Ω
1
30m
32m
～
330m
