National Instruments 5441 用户手册
NI 5441 Specifications
20
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DIGITAL DATA & CONTROL (DDC)
Optional Front Panel Connector
Specification
Value
Comments
Connector
Type
Type
68-pin VHDCI female receptacle
—
Number of
Data Output
Signals
Data Output
Signals
16
—
Control
Signals
Signals
1. DDC CLK OUT (clock output)
2. DDC CLK IN (clock input)
3. PFI 2 (input)
4. PFI 3 (input)
5. PFI 4 (output)
6. PFI 5 (output)
—
Ground
23 pins
—
Output Signal Characteristics (Includes Data Outputs, DDC CLK OUT, and PFI<4..5>)
Signal Type
LVDS (Low-Voltage Differential Signal)
—
Signal
Characteristics
Characteristics
Minimum
Typical
Maximum
1. Tested with
100
Ω
differential
load.
load.
2. Measured at
the front
panel.
panel.
3. Load
capacitance
<15 pF.
<15 pF.
4. Driver and
receiver
comply with
ANSI/TIA/
EIA-644.
comply with
ANSI/TIA/
EIA-644.
V
OH
—
1.3 V
1.7 V
V
OL
0.8 V
1.0 V
—
Differential
Output Voltage
Output Voltage
0.25 V
—
0.45 V
Output
Common-Mode
Voltage
Common-Mode
Voltage
1.125 V
—
1.375 V
Differential
Pulse Skew
(skew within
a differential
pair)
Pulse Skew
(skew within
a differential
pair)
—
—
0.6 ns
Rise/Fall Time
—
0.5 ns
1.6 ns