Datasheet

Datasheet
TEK.COM20
Typical Digitize Signal Characteristics
Typical performance for these conditions: Sample rate 1 MS per s; sine wave input V
PEAK
= –1 dB full-scale of range
Function: Range
Spur-free Range SFDR
(1 kHz / 10 kHz / 50 kHz)
THD + Noise SNDR
(1 kHz / 10 kHz / 50 kHz) Bandwidth (–3 dB, 5%)
Effective Number of Bits
(1 kHz/10 kHz/50 kHz)
DCV: 100 mV 75 / 70 / 50 65 / 60 / 50 210 kHz 9 / 9 / 7
DCV: 1 V 95 / 90 / 75 80 / 80 / 75 210 kHz 12 / 12 / 11
DCV: 10 V 95 / 80 / 70 90 / 80 / 70 440 kHz 13 / 12 / 10
DCV: 100 V 50 / 35 / 25 50 / 40 / 30 17 kHz 10 / 8 / 7
DCV: 1000 V 50 / 35 / 25 50 / 40 / 30 17 kHz 13 / 11 / 10
DCI: 100 µA 80 / 65 / 45 70 / 65 / 45 430 kHz 12 / 10 / 8
DCI: 1 mA 80 / 65 / 45 70 / 65 / 45 570 kHz 12 / 10 / 8
DCI: 10 mA 80 / 65 / 45 70 / 65 / 45 230 kHz 12 / 10 / 8
DCI: 100 mA 80 / 65 / 45 70 / 65 / 45 340 kHz 12 / 10 / 8
DCI: 1 A 70 / 50 / 40 65 / 50 / 40 25 kHz 11 / 8 / 7
DCI: 3 A 70 / 50 / 40 65 / 50 / 40 25 kHz 11 / 8 / 7
Digitizing Additional Characteristics
Maximum Resolution 16 bits
Measurement Input Coupling DC coupled
Sampling Rate Programmable 1 kS through 1 MS/s
Minimum Record Time 1 µs
Maximum Record Length (Volatile) 7 million with standard buffer (includes channel and formatting information)
DC Voltage Ratio
DC Voltage Ratio Calculation
38
Method Measurement
Channel Ratio
(through rear input plug-in
module)
Channel A
Channel Ratio =
___________
Channel B
Accuracy = (Accuracy of channel A measure range + Accuracy of channel B measure range) × Channel ratio
Channel Average
(through rear input plug-in
module)
Channel A + Channel B
Channel Average =
_______________________
2
Accuracy = Accuracy of channel A measure range + Accuracy of paired channel B measure range
DCV Input Ratio
(HI-LO/SHI–SLO)
39, 40
HI signal
Ratio =
_______________________
SHI signal – SLO signal
HI range 10 V
Accuracy = (
_________
× DCV% of range accuracy +
_______________________
× 0.0008% ) × Ratio
HI signal SHI signal – SLO signal
Notes
38. See DC Voltage Accuracy. SHI and SLO: 10 V range only. SHI and SLO (sense) terminals referenced to LO input. Maximum voltage referenced to LO 12 V.
39. Sense terminals on inputs are limited to 10 V range during ratio measurement. Add 0.0015% + 0.0005% per °C temperature coefficient to DCV percent of range accuracy when using the
100 V or 1000 V range on the input terminals.
40. Specified for front inputs only.