2680A/2686A
Users Manual
B-4
Crosstalk from a V ac or frequency signal on a PAI module channel to an adjacent
channel using the slow reading rate is as shown in Table B-2.
Table B-2. PAI Module Crosstalk Specifications
Frequency
V dc 1 k
Ω
source
Resistance
100
Ω
RTD
Thermocouple
R <20 k
Ω
R >20 k
Ω
<100 Hz
-120 dB
.001%/V
.01%/V*M
Ω
.001
°
/V .001
°
/V
100 Hz
-120 dB
.001%/V
.05%/V*M
Ω
.001
°
/V .003
°
/V
500 Hz
-120 dB
.001%/V
.05%/V*M
Ω
.001
°
/V .01
°
/V
1 kHz
-100 dB
.001%/V
.05%/V*M
Ω
.001
°
/V .01
°
/V
2 kHz
-60
.001%/V
.1%/V*M
Ω
.001
°
/V .01
°
/V
2
5 kHz
.01 mV/V
2
.005%/V
2
Not
recomm. .001
°
/V
2
.01
°
/V
2
10 kHz
.01 mV/V
2
.005%/V
2
Not
recomm. .01
°
/V
2
.05
°
/V
2
20 kHz
.05 mV/V
2
.01%/V
2
Not
recomm.
.01
°
/V
2
Not
recomm.
50 kHz
.1 mV/V
2
.01%/V
2
Not
recomm.
.01
°
/V
2
Not
recomm.
100 kHz
.1 mV/V
2
.01%/V
2
Not
recomm.
.01
°
/V
2
Not
recomm.
>500 kHz
.1 mV/V
2
.1%/V
2
Not
recomm.
.01
°
/V
2
Not
recomm.
For frequencies below 5 kHz, the 2680 Series is roughly 10 times more susceptible to crosstalk at
frequencies that are exact multiples of 300 Hz than it is at the frequencies shown above. e.g., the
sensitivity at 3 kHz will be about 10 times worse than at 2 kHz or 5 kHz.
The above table indicates the amount of crosstalk interference caused by applying V ac to one
other channel. If V ac (or frequency) inputs are applied to multiple channels, multiply the value in
the table by the number of channels with V ac (or frequency) applied.
Summary of Contents for 2680A
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