3-25
IM 701240-01E
3
3
2
1
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
App
Index
Preparations for Measurements
3.10 Connecting Thermocouples
Connecting Thermocouples
If you are connecting the compensation lead of the thermocouple to the input terminal
(binding post terminal) of the 701261 (UNIVERSAL), 701262 (UNIVERSAL (AAF)), or
701265 (TEMP/HPV), loosen the terminal knob, pass the lead through the terminal, and
tighten the knob.
To the thermocouple
Compensation lead (or thermocouple wire)
+ leg
– leg
L
H
WARNING
Over-Range Indication
If over-range is indicated, the SL1400 may be receiving a voltage higher than
the observed waveform or measured waveform values. To prevent electric
shock, change the vertical scale with the RANGE knob so that the entire
amplitude of the waveform is displayed within the waveform display area, and
check the input voltage level.
Over-range indication
Indicates the number of the channel that over-range is occurring on.
If over-range is occurring on multiple channels, the smallest channel
number among them is indicated.
CAUTION
• The 701261 (UNIVERSAL), 701262 (UNIVERSAL (AAF)), or 701265 (TEMP/
HPV) is isolated from the SL1400. However, applying a voltage exceeding the
value below may damage the input section. If the frequency is above 1 kHz,
damage may occur even when the voltage is below this value.
• Maximum input voltage (across the input terminals, H and L, at a frequency of
1 kHz or less)
42 V (DC+ACpeak)
• Maximum allowable common mode voltage (across the input terminal L and
earth at a frequency of 1 kHz or less)
42 V (DC+ACpeak) (CAT II, 30 Vrms)
• Correct measurements cannot be made, if the positive and negative legs of the
thermocouple are reversed.