Quick Start Guide

Operating Precautions
8
Input and Measurement Precautions
The maximum input voltage and maximum rated voltage to ground
(between the grounds of the input terminals and the instrument, and
between inputs of other analog modules) of each input module and exter-
nal input terminals are shown below. To avoid risk of electric shock and
damage to the instrument, be careful to not exceed these ratings. The max-
imum rated voltage to ground is the same regardless of whether an input
attenuator or similar device is used.
Input Terminal (Input Module) Maximum Input Voltage*
1
Maximum Rated Voltage
to Ground*
2
8936 Analog Unit 400 V DC max 370 V AC/DC
8956 Analog Unit 400 V DC max 300 V AC/DC
8946 4-Ch Analog Unit 30 V rms/ 60 V DC 30 V rms / 60 V DC
8938 FFT Analog Unit 400 V DC max 370 V AC/DC
8957 High Resolution Unit 400 V DC max 300 V AC/DC
8959 DC/RMS Unit 400 V DC max 370 V AC/DC
8937 Voltage/Temp Unit 30 V rms/ 60 V DC 30 V rms / 60 V DC
8939 Strain Unit 10 V DC max 30 V rms / 60 V DC
8960 Strain Unit 10 V DC max 33 V rms / 70 V DC
8940 F/V Unit
(BNC jacks and sensor re-
ceptacles)
30 V rms / 60 V DC
(BNC jack)
30 V rms / 60 V DC
(Sensor receptacle terminals)
Uninsulated
8947 Charge Unit*
3
(BNC jack)
30 V rms / 60 V DC
(BNC jack)
30 V rms / 60 V DC
8958 16-Ch Scanner Unit 40 V DC max 33 V rms / 70 V DC
9322 Differential Probe
(CATII)
2000 V DC, 1000 V AC
(CAT III)
600 V AC/DC
With grabber clips
1500 V AC/DC (CAT II)
600 V AC/DC (CAT III)
With alligator clips
1000 V AC/DC (CAT II)
600 V AC/DC (CAT III)
I/O Terminals Maximum input voltage
Maximum rated voltage
to ground
EXT.SMPL
EXT.TRIG
PRINT/EXT.IN3
STOP/EXT.IN2
START/EXT.IN1
-2 to 7 V DC
Uninsulated
TRIG OUT/CAL
NG
/EXT OUT2
GO/EXT OUT1
-20 to 30 V DC,
500 mA max,
200 mW max
This Instrument
Input Module
GND
*1
*2
H
L
*2
“xxx V AC/DC” indicates an RMS
value, and “xxx V DC max” indi
-
cates an instantaneous value.
(Input modules other than the
Model 8947 Charge Unit)
This Instrument
Input Module
GND
*3
*2
H
L
*2
*1
H
L
BNC
Miniature
Connector
Common
(8947 Charge Unit)
*1.Maximum input voltage
*2.Maximum rated voltage to
ground
*3.Maximum applied electric
charge
500 pC (high-sensitivity side,
6
ranges),
50,000 pC (low-sensitivity
side, 6 ranges)