User manual | Specifications: USB-7204

USB-7204
Specifications
Revision 1.1, October, 2009
© Copyright 2009, Measurement Computing Corporation
Specifications
All specifications are subject to change without notice.
Typical for 25°C unless otherwise specified.
Specifications in italic text are guaranteed by design.
Analog input
Table 1. Analog input specifications
Parameter
A/D converter type
Input modes
Input voltage range for linear operation,
single-ended mode
Input common-mode voltage range for linear
operation, differential mode
Absolute maximum input voltage
Input impedance
Input current (Note 1)
Conditions
Specification
CHx to GND
Successive approximation type
Single-ended or differential (default)
±10 volts (V) maximum
CHx to GND
-10 V minimum, +20 V maximum
CHx to GND
±28 V maximum
122KOhm
70 microamperes (µA) typical
-12 µA typical
-94 µA typical
8 single-ended / 4 differential, software
selectable
±10 V, G=2
±20 V, G=1
±10 V, G=2 (default)
±5 V,
G=4
±4 V,
G=5
±2.5 V, G=8
±2.0 V, G=10
±1.25 V, G=16
±1.0 V, G=20
Software selectable
250 samples per second (S/s) typical,
PC-dependent
0.56 S/s to 50 (kS/s)
Software configurable channel, range.
12 bits, no missing codes
11 bits (shifted for 12-bit representation,
even numbers only)
±1 least significant bit (LSB) typical
±0.5 LSB typical
±1 LSB typical
External digital: TRIG_IN
 Internal
 External (SYNC), rising edge triggered
 External Gated (SYNC), see Note 4
 Programmed IO
Factory Cal factors stored in firmware. Cal
factors must be applied via application
software.
Vin = +10 V
Vin = 0 V
Vin = -10 V
Number of channels
Input ranges, single-ended mode
Input ranges, differential mode
Throughput (Note 2)
Software paced
Channel Gain Queue
Resolution (Note 3)
Scan to system memory
Up to 16 elements
Differential
Single-ended
Integral linearity error
Differential linearity error
Repeatability
Trigger source
Pacer source
Software selectable
Software selectable
Calibration
Note 1:
Input current is a function of applied voltage on the analog input channels. For a given input
voltage, Vin, the input leakage is approximately equal to (8.181*Vin-12) µA.
2
USB-7204
Specifications
Note 2:
Note 3:
Note 4:
Maximum throughput scanning to PC memory is machine dependent. The rates specified are for
Windows XP only.
The AD7870 converter only returns 11-bits (0-2047 codes) in single-ended mode; firmware shifts it
to 12-bit.
External Gated Sync holds off the first clock pulse after setting up a scan to ensure adequate setup
time for the first conversion.
Table 2. Accuracy, differential mode
Range
Accuracy (LSB)
±20 V
±10 V
±5 V
±4 V
±2.5 V
±2 V
±1.25 V
±1 V
5.1
6.1
8.1
9.1
12.1
14.1
20.1
24.1
Table 3. Accuracy, single-ended mode
Range
Accuracy (LSB)
±10 V
4.0
Table 4. Accuracy components, differential mode - All values are (±)
Range
% of Reading
Gain Error at full scale (FS)
(millivolts (mV))
Offset (mV)
Accuracy at FS (mV)
±20 V
±10 V
±5 V
±4 V
±2.5 V
±2 V
±1.25 V
±1 V
0.2
0.2
0.2
0.2
0.2
0.2
0.2
0.2
40
20
10
8
5
4
2.5
2
9.766
9.766
9.766
9.766
9.766
9.766
9.766
9.766
49.766
29.766
19.766
17.766
14.766
13.766
12.266
11.766
Table 5. Accuracy components, single-ended mode - All values are (±)
Range
% of Reading
Gain Error at FS (mV)
Offset (mV)
Accuracy at FS (mV)
±10 V
0.2
20
19.531
39.531
Table 6. Noise performance, differential mode
Range
Typical counts
Least significant bitroot mean square (LSBrms)
±20 V
±10 V
±5 V
±4 V
±2.5 V
±2 V
±1.25 V
±1 V
2
2
3
3
4
5
7
8
0.30
0.30
0.45
0.45
0.61
0.76
1.06
1.21
3
USB-7204
Specifications
Table 7. Noise performance, single-ended mode
Range
Typical Counts
LSBrms
±10 V
2
0.30
Analog output
Table 8. Analog output specifications
Parameter
Conditions
Resolution
Output range
Number of channels
Throughput (Note 5)
Software paced
Single channel, continuous scan
Dual channel, continuous scan,
simultaneous update
Power on and reset voltage
Output drive
Slew rate
Note 5:
Specification
12-bits, 1 in 4096
0 – 4.096 V, 1 mV per LSB.
2
250 S/s single channel typical, PC dependent
10 kS/s
5 kS/s
Initializes to 000h code
15 mA
0.8V/microsecond (µs) typical
Each D/A OUT
Maximum throughput scanning to PC memory is machine dependent. The rates specified are for
Windows XP only. Maximum rates on operating systems that predate XP may be less and must be
determined through testing on your machine.
Table 9. Analog output accuracy, all values are (±)
Range
Accuracy (LSB)
0-4.096 V
4.0 typical, 45.0 maximum
Table 10. Analog output accuracy components, all values are (±)
Range
% of FSR
Gain Error at FS (mV)
0-4.096 V
0.1 typical, 0.9 max
4.0 typical, 36.0 max
Note 6:
Offset (mV)
(Note 6)
1.0 typical, 9.0 max
Accuracy at FS
(mV)
4.0 typical, 45.0 max
Negative offsets will result in a fixed zero-scale error or "dead band." At the maximum offset of
9 mV, any input code of less than 0x009 will not produce a response in the output.
Digital input/output
Table 11. Digital I/O specifications
Parameter
Specification
Digital type
Number of I/O
Configuration
Pull up/pull-down configuration
CMOS
16 (Port 0 bit 0 through bit 7, Port 1 bit 0through bit 7)
2 banks of 8
All pins configurable via jumpers (JP1 and JP2) to Vs or Ground via 47 K resistors.
JP1 configures Port 1, and JP2 configures Port 0.
2.0 V minimum, 5.5 V absolute maximum
0.8 V maximum, –0.5 V absolute minimum
3.8 V minimum
Input high voltage
Input low voltage
Output high voltage
(IOH = -2.5 mA)
Output low voltage
(IOL = 2.5 mA)
Power on and reset state
0.7 V maximum
Input
4
USB-7204
Specifications
External trigger
Table 12. Digital trigger specifications
Parameter
Conditions
Specification
Trigger source (Note 7)
Trigger mode
External Digital
Software selectable
TRIG_IN
Edge sensitive: user configurable for CMOS compatible
rising or falling edge.
10 µs maximum
1 µs minimum
4.0 V minimum, 5.5 V absolute maximum
1.0 V maximum, –0.5 V absolute minimum
±1.0 µA
Trigger latency
Trigger pulse width
Input high voltage
Input low voltage
Input leakage current
Note 7:
TRIG_IN is a Schmitt trigger input protected with a 1.5 kilohm (kΩ) series resistor.
External clock input/output
Table 13. External clock I/O specifications
Parameter
Conditions
Pin name
Pin type
Software selectable direction
Input clock rate
Clock pulse width
Input leakage current
Input high voltage
Input low voltage
Output high voltage (Note 8)
Output low voltage (Note 8)
Note 8:
Specification
SYNC
Bidirectional
Outputs internal A/D pacer clock.
Receives A/D pacer clock from external source.
50 KHz, maximum
1 µs minimum
5 µs minimum
±1.0 µA
4.0 V minimum, 5.5 V absolute maximum
1.0 V maximum, –0.5 V absolute minimum
3.3 V minimum
3.8 V minimum
1.1 V maximum
0.6 V maximum
Output (default)
Input
Input mode
Output mode
Input mode
IOH = -2.5 mA
No load
IOL = 2.5 mA
No load
SYNC is a Schmitt trigger input and is over-current protected with a 1.5 kΩ series resistor.
5
USB-7204
Specifications
Counter
Table 14. Counter specifications
Parameter
Specification
Pin name (Note 9)
Counter type
Number of channels
Input type
Input source
Resolution
Schmidt trigger hysteresis
Input leakage current
Maximum input frequency
High pulse width
Low pulse width
Input high voltage
Input low voltage
CTR
Event counter
1
TTL, rising edge triggered
CTR screw terminal
32 bits
20 mV to 100 mV
±1 µA
1 MHz
500 ns minimum
500 ns minimum
4.0 V minimum, 5.5 V absolute maximum
1.0 V maximum, –0.5 V absolute minimum
Note 9:
CTR is a Schmitt trigger input protected with a 1.5K Ω series resistor.
Non-volatile memory
Table 15. Non-volatile memory specifications
Parameter
Specification
EEPROM
EEPROM Configuration
1,024 bytes
Address Range
Access
Description
0x000-0x1FF
0x200-0x3FF
Reserved
Read/write
512 bytes system and cal data
512 bytes user area
Microcontroller
Table 16. Microcontroller specifications
Parameter
Specification
Type
Program Memory
Data Memory
High performance 8-bit RISC microcontroller
32,768 words
3,936 bytes
Indicator LEDs
Table 17. Indicator LED specifications
Parameter
Specification
Power LED (top)
Status LED
OEM power
Indicates that the device’s microcontroller has power and is configured.
Blinks to indicate USB communications.
OEM Connector; LED sink current up to 5 mA per LED @ 5 Vmax
6
USB-7204
Specifications
Power
Table 18. Power specifications
Parameter
Conditions
Supply current (Note 10)
+5VUSER power available
(Note 11)
80 mA
 Connected to self-powered hub
4.5 V minimum, 5.25 V maximum
 Connected to externally-powered root port hub
Connected to bus-powered hub
4.1 V minimum, 5.25 V maximum
Connected to self-powered hub
420 mA maximum
Connected to externally-powered root port hub
Connected to bus-powered hub
20 mA maximum
0452.500 - Littelfuse 0.5A NANO2® Slo-Blo® Subminiature Surface Mount Fuse
0452.375 - Littelfuse 0.375A NANO2® Slo-Blo® Subminiature Surface Mount Fuse
Output current (Note 12)
Fuse F1, (F4 spare)
Fuse F2, (F3 spare)
Specification
This is the total current requirement for the USB-7204 which includes up to 10 mA for the status
LED.
Note 11: Self-powered hub refers to a USB hub with an external power supply. Self-powered hubs allow a
connected USB device to draw up to 500 mA.
Note 10:
Root port hubs reside in the PC’s USB host controller. The USB port(s) on your PC are root port
hubs. All externally powered root port hubs (desktop PCs) provide up to 500 mA of current for a
USB device. Battery-powered root port hubs provide 100 mA or 500 mA, depending upon the
manufacturer. A laptop PC that is not connected to an external power adapter is an example of a
battery-powered root port hub.
Bus powered hubs receive power from a self-powered or root port hub. In this case the maximum
current available from the USB +5 V is 100 mA. The minimum USB +5 V voltage level can be as
low as 4.1 V.
Note 12:
Protected by fuse F2 at 375 mA.
This refers to the total amount of current that can be sourced from the USB +5 V, analog outputs and
digital outputs.
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USB-7204
Specifications
General
Table 19. General specifications
Parameter
Specification
Device type
Device compatibility
DEFAULTS for
programmable options and
"DEV:RESET/DEFAULT"
message
USB 2.0 (full-speed)
USB 1.1, USB 2.0
AI
Channel Mode = Differential
Range = ±10 V
AInScan
Low Channel = 0
High Channel = 0
Samples = 1000
Rate = 1000
Range = ±10 V
Pacer = Master
Transfer Mode = BlockIO
Trigger = Disabled
Queue = Disabled
Status = Idle
AITrig
Trigger Polarity = Rising
Rearm – Disabled
AOutScan
Low Channel = 0
High Channel = 0
Samples = 1000
Rate = 1000
Trigger = Disabled
Status = Idle
CTR
Value = 0
Environmental
Table 20. Environmental specifications
Parameter
Specification
Operating temperature range
Storage temperature range
Humidity
0 to 70 °C
-40 to 70 °C
0 to 90% non-condensing
Mechanical
Table 21. Mechanical specifications
Parameter
Specification
Dimensions
3.55" (L) x 3.75" (W) x 0.5" (H)
4.40" (L) with detachable screw terminals connected
3 meters maximum
3 meters maximum
USB cable length
User connection length
8
USB-7204
Specifications
Main connector and pin out
Table 22. Main connector specifications
Parameter
Specification
Connector type
Wire gauge range
Screw terminal
16 AWG to 30 AWG
4-channel differential mode
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Signal Name
CH0 IN HI
CH0 IN LO
AGND
CH1 IN HI
CH1 IN LO
AGND
CH2 IN HI
CH2 IN LO
AGND
CH3 IN HI
CH3 IN LO
AGND
D/A OUT 0
D/A OUT 1
AGND
N/C (do not connect anything to this pin)
GND
TRIG_IN
SYNC
CTR
Pin
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
Signal Name
Port 0 Bit 0
Port 0 Bit 1
Port 0 Bit 2
Port 0 Bit 3
Port 0 Bit 4
Port 0 Bit 5
Port 0 Bit 6
Port 0 Bit 7
GND
+5VUSER output
GND
Port 1 Bit 0
Port 1 Bit 1
Port 1 Bit 2
Port 1 Bit 3
Port 1 Bit 4
Port 1 Bit 5
Port 1 Bit 6
Port 1 Bit 7
GND
Pin
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
Signal Name
Port 0 Bit 0
Port 0 Bit 1
Port 0 Bit 2
Port 0 Bit 3
Port 0 Bit 4
Port 0 Bit 5
Port 0 Bit 6
Port 0 Bit 7
GND
+5VUSER output
GND
Port 1 Bit 0
Port 1 Bit 1
Port 1 Bit 2
Port 1 Bit 3
Port 1 Bit 4
Port 1 Bit 5
Port 1 Bit 6
Port 1 Bit 7
GND
8-channel single-ended mode
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Signal Name
CH0 IN
CH1 IN
AGND
CH2 IN
CH3 IN
AGND
CH4 IN
CH5 IN
AGND
CH6 IN
CH7 IN
AGND
D/A OUT 0
D/A OUT 1
AGND
N/C (do not connect anything to this pin)
GND
TRIG_IN
SYNC
CTR
9
USB-7204
Specifications
OEM connector and pin out (P4)
Table 23. OEM connector specifications
Parameter
Specification
Connector type
10 position 0.1" box header
Table 24. OEM connector pin out
Pin
1
3
5
7
9
Signal Name
N/C
N/C
N/C (do not connect anything to this pin)
N/C (do not connect anything to this pin)
N/C (do not connect anything to this pin)
Pin
2
4
6
8
10
Signal Name
VBUS (fuse protected)
DD+
GND
SHIELD
Trigger/Sync connector and pin out (P5)
Table 25. Trigger/Sync connector specifications
Parameter
Specification
Connector type
10 position 0.1" box header
Table 26. Trigger/Sync connector pin out
Pin
1
3
5
7
9
Signal Name
TRIG_IN
N/C
SYNC
N/C
N/C
Pin
2
4
6
8
10
10
Signal Name
GND
GND
GND
GND
N/C
Measurement Computing Corporation
10 Commerce Way
Suite 1008
Norton, Massachusetts 02766
(508) 946-5100
Fax: (508) 946-9500
E-mail: [email protected]
www.mccdaq.com
USB-7204-spec.docx

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