USB-2533 User's Guide
Specifications
40
Note 4:
Noise reflects 10,000 samples at 1 MHz, typical, differential short.
Thermocouples
Table 3. TC types and accuracy (Note 3)
TC type
Temperature range (°C)
Accuracy (±°C)
Noise typical (±°C)
J
-200 to + 760
1.7
0.2
K
-200 to + 1200
1.8
0.2
T
-200 to + 400
1.8
0.2
E
-270 to + 650
1.7
0.2
R
-50 to + 1768
4.8
1.5
S
-50 to + 1768
4.7
1.5
N
-270 to + 1300
2.7
0.3
B
+300 to + 1400
3.0
1.0
Note 5:
Assumes 16384 oversampling applied, CMV = 0.0V, 60 minute warm-up, still environment, and
25 °C ambient temperature; excludes thermocouple error; TC
in
= 0 °C for all types except B
(1000 °C), PS-9V1AEPS-2500 power supply for external power.
Digital input/output
Table 4. Digital input/output specifications
Number of I/O
24
Ports
Three banks of 8.
Each port is programmable as input or output
Input scanning mode 2
programmable
Asynchronous, under program control at any time relative to input scanning
Synchronous with input scanning
Input Characteristics
220
Ω
series resistors, 20 pF to common
Logic Keeper Circuit
Holds the logic value to 0 or 1 when there is no external driver
Input protection
±15 kV ESD clamp diodes parallel
Input high
+2.0 V to +5.0 V
Input low
0 to 0.8 V
Output high
>2.0 V
Output low
<0.8 V
Output current
Output 1.0 mA per pin, sourcing more current may require a PS-9V1AEPS-2500
power supply option
Digital input pacing
Onboard clock, external clock (XAPCR)
Digital output pacing
Four programmable sources:
Onboard D/A clock, independent of scanning input clock
Onboard scanning input clock
External D/A input clock, independent of external scanning input clock-
(XDPCR)
External scanning input clock-(XAPCR)
Digital input trigger sources and
modes
See
Digital output trigger sources
Start of input scan
Data transfer
DMA
Sampling/update rate
12 MHz maximum
Pattern generation output
Two of the 8-bit ports can be configured for 16-bit pattern generation. The pattern
can also be updated synchronously with an acquisition at up to 12 MHz.
