Agilent Technologies DP235 Uživatelská příručka stáhnout pdf (Strana 220)

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Using the Pattern Generator

Building Test Vectors and Functions

Clock Out Delay

The Clock Out Delay setting allows you to position the output clock

with respect to data. The zero setting is uncalibrated and should be

measured to determine the initial position with respect to the data.

Each numerical change of one on the counter results in an approximate

change of 1.3 ns.

Symbols

Touching the Symbols field brings up a pop-up menu that lets you build

a symbol table to use when putting data into the Sequence and User

Macros menus. Providing symbol names to frequently used values lets

you enter the values more easily and recognize these values by their

symbol name rather than having to remember data values.

Vector Output Mode

The Vector Output Mode determines the channel width, available pods,

and the frequency range for both the internal and external clock. The

following table shows the difference between the Full Channel 100

MBits/s mode and the Half Channel 200 MBits/s mode.

Full Channel

100 MBits/s

Half Channel

200 MBits/s

Pods Available Pods 1, 2, 3, 4 Pods 1, 3

Maximum Channels 32; eight per

pod

16; eight on pods

1, 3

Maximum External Clock

Frequency

100 MHz 200 MHz

Maximum Internal Clock

Frequency

100 MHz 200 MHz

Minimum External Clock

Frequency

DC DC

Minimum Internal Clock

Frequency

4 kHz 4 kHz

1 2 ... 215 216 217 218 219 220 221 222 223 224 225 ... 627 628

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