Agilent Technologies 85032B/E 50 Manuale Utente Scaricare il pdf (Pagina 7)

Determining Optional Sweep Speed and

Dynamic Range

Dynamic range, sweep time and IF Bandwidth are

interdependent quantities. Reducing sweep time

usually results in a decrease in dynamic range. A

compromise must be made depending upon the

application. The following charts will help in mak-

ing these tradeoffs. All data determined from pre-

set conditions, except as noted.

Agilent 8714B dynamic range vs IF BW (typical)

IF bandwidth Narrowband dynamic range

Wide (6500 Hz) 70 dB typical

Medium (3700 Hz) 90 dB typical

Narrow (250 Hz) 105 dB typical

Fine (15 Hz) 110 dB typical

Measurement sweep times (msec)

8712B 8714B

fwd cycle fwd cycle

Medium IF BW 132 159 182 223

Wide IF BW 64 72 118 159

CF = 177 MHz, 51 59 68 87

Span = 200 MHz

Determining Automated Test Configuration

The following charts are provided to assist in

deciding upon system configurations when

automating test systems. Typical tradeoffs are

between transferring data to an external computer

or utilizing the built-in IBASIC capabilities.

Speed of common IBASIC operations (in microseconds)

Platform

Operation 871X 80486DX

IBASIC 33 MHz

int16 ADD 182 35

int16 SUB 200 36

int16 MUL 219 39

int16 DIV 860 124

float64 ADD 366 94

float64 SUB 346 93

float64 MUL 384 92

float64 DIV 502 95

Trace transfer time (in milliseconds)

Number of points

Format 51 201 401 1601

Corrected (Int, 16) 26 31 39 85

Corrected (Real, 64) 32 65 97 330

Corrected (ASCII) 105 364 713 3000

Formatted (Real, 64) 38 59 98 335

Formatted (ASCII) 60 199 390 1510

Entering 8711 data into a BASIC workstation (735/125)

Number of points

Format 51 201 401 1601

Corrected (Real, 64) 32 65 97 330

Formatted (Real, 64) 38 59 98 335

Entering data from IBASIC

Number of points

Format 51 201 401 1601

Corrected (Int, 16) 28 30 38 102

Corrected (Real, 32) 38 100 182 675

Corrected (Real, 64) 36 90 161 593

Corrected (ASCII) 130 470 923 3600

Formatted (Real, 64) 28 60 102 354

Formatted (ASCII) 75 254 492 1900

Entering 8711 data into a PC (HP Vectra VL2 4/66)

REAR PANEL

FRONT PANEL

CRT

Reflected

Input A

Input R*

Input R

Input B*

Input B

Reference

Incident

Trnsmitted

To Processor and Display

AUX Input

External Detectors

Source

RF Out

RF In

Device

Under Test

= Narrowband Detector

= Broadband Detector

8712B/8713B block diagram

Characteristics

1 2 3 4 5 6 7 8 9 10 11 12

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Agilent Technologies 85032B/E 50 Manuale Utente Pagina 7

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