Genie NI 5421 User Manual download pdf (Page 22)

NI 5421 Specifications 22 ni.com

DIGITAL DATA & CONTROL (DDC)

Optional Front Panel Connector

Table 7.

Specification Valu e Comments

Connector

Type

68-pin VHDCI female receptacle —

Number of

Data Output

Signals

16 —

Control

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

Minimum Typical Maximum

1. Tested with

100 Ω

differential

load.

2. Measured at

the front panel.

3. Load

capacitance

<10 pF.

4. Driver and

receiver

comply with

ANSI/TIA/

EIA-644.

5. Rise time is

20% to 80%.

— 1.3 V 1.7 V

0.8 V 1.0 V —

Differential

Output Voltage

0.25 V — 0.45 V

Output

Common-Mode

Vo l t a g e

1.125 V — 1.375 V

Rise/Fall Time — 0.8 ns 1.6 ns

1 2 ... 17 18 19 20 21 22 23 24 25 26 27 ... 35 36

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Genie NI 5421 User Manual Page 22

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