Pendulum CNT-66 Bedienungsanleitung

CNT-66

Programmable Timer/Counter

Users Manual

4031 600 66001

Rev. 01 (September 2000)

This manual, in whole or in part, may not be copied without permission.

All product name are trademarks of their respective companies.

Table of Contents

EC DECLARATION OF CONFORMITY ........ IV

1 Safety Instructions

Safety ............................. 1-2

Introduction ............................. 1-2

2 Product Presentation

General ................................ 2-2

Rear View .............................. 2-2

Front View .............................. 2-3

3 Installation

Unpacking .............................. 3-2

Voltage Range Selection................... 3-2

Grounding .............................. 3-3

Connecting External Reference ............. 3-3

Installing the Rack Mount Adapter ........... 3-3

4 Operating Instructions

Using the Timer/Counter ................... 4-2

Error Codes............................ 4-14

5 GPIB-interface Operation

Introduction ............................. 5-2

What can I do using the Bus? ............... 5-2

Connecting the Controller .................. 5-3

Giving the Counter an Address .............. 5-3

Checking the Communication ............... 5-3

Two Ways of Programming................. 5-4

Syntax ................................. 5-4

Selecting Output Separator................. 5-5

How to Select Function .................... 5-5

Selecting Measuring-Time.................. 5-6

Selecting Input settings .................... 5-6

Totalize Start/Stop........................ 5-7

Free-Run/Triggered....................... 5-7

Service Request ......................... 5-8

Status Byte ............................. 5-8

Output Mode ........................... 5-10

Bus Learn ............................. 5-12

Programming Data Out ................... 5-12

What Happens When I Switch to Local?...... 5-12

Summary of Bus Commands .............. 5-13

Programming Examples .................. 5-14

6 Performance Check

Performance Check....................... 6-2

7 Calibration and Adjustment

Calibration .............................. 7-2

Timebase References ..................... 7-3

8 Specifications

Measuring Functions...................... 8-2

Input-A and Input-B ....................... 8-3

Input C ................................ 8-3

External Reference Input D .................. 8-3

Auxiliary Functions ....................... 8-4

Definitions .............................. 8-4

General Specifications .................... 8-5

Environmental Data....................... 8-6

Mechanical Data ......................... 8-6

Optional Accessories...................... 8-6

Ordering Information ...................... 8-7

9 Appendix

Checking the Sensitivity of Counters.......... 9-2

10 Service

Sales and Service office................ II

GUARANTEE STATEMENT ................. III

11 Index

Index ............................... II

III

EC DECLARATION OF CONFORMITY

Number: 4031 100 63700A41

The undersigned, representing the following manufacturer:

Manufacturer:

Pendulum Instruments AB

Sorterargatan 26, Box 541

SE-162 15 Vällingby, Sweden

Representative: Jan Herwe

Function: Quality Manager

herewith declare that the product:

Product Identification:

Product: Timer/Counter

Brand: Pendulum

Model: CNT-66

Version: All models

is in conformance with the EC Directive 89/336/EEC based on test results using harmonized standards in accordance with

Article 10(1) of the directive and the directive LVD-73/23/EEC.

Test report no: Title

Safety release certificate March 18, 1996

SEMKO EMC test report 953210I.3

CEM-Consult AB: CC-EMC/88-1044

Harmonized standards used:

Safety: EN 61010-1 (1990) + A1 (1992) + A2 (1995) CAT II

EMC: EN 55011 (1991) Group 1, Class B

EN 50082-1 (1992)

Place: Vällingby Date: 2000-05-29

This Conformity is indicated by the symbol , i.e. “Conformité européenne”.

Chapter 1

Safety Instructions

Safety

Introduction

Read this page carefully before you install and use the

CNT-66 Timer/Counter.

This Timer/Counter has been designed and tested in accor-

dance with EN 61010-1 and has been supplied in a safe

condition. The user of this instrument must have the re-

quired knowledge of CNT-66. This knowledge can be

gained by thoroughly studying this manual.

Safety Precautions

Use generally-accepted safety procedures, in addition to the

safety precautions stated in this manual, to ensure personal

safety and safe operation of the Timer/Counter.

Caution and Warning Statements

You will find specific warning and caution statements, where

necessary throughout the manual. Do not carry out repairs

or adjustments to the Timer/Counter without reading the

Service Manual, which contains the relevant warnings for

such activities.

CAUTION: Indicates where incorrect operating pro-

cedures can cause damage to, or

destruction of, equipment or other property.

WARNING: Indicates a potential danger that re-

quires correct procedures or practices in

order to prevent personal injury.

Symbols

Indicates where the protective ground lead is

connected inside the instrument. Never un-

screw or loosen this screw.

Signal Ground symbol. This symbol indicates

that the signal ground of the connectors are in-

ternally connected to the other connectors with

the same symbol, and to parts that are easily

accessible for the user.

Indicates that the operator should consult

the manual.

Such symbols are printed near the input connectors. This

symbol on the instrument should encourage the user to use

the correct procedure for common instrument ground, and

maximum input voltages, as described in the Installation

and Specification chapters.

If in Doubt About Safety

Whenever you suspect that it is unsafe to use the instru-

ment, you must make it inoperative, clearly mark it to pre-

vent its further operation, and inform the Pendulum servic-

ing department.

E.g.The instrument is likely to be unsafe if it is visibly dam-

aged.

Safety Instructions

1-2 Introduction

Chapter 2

Product Presentation

General

The CNT-66 is a compact, high resolution, reciprocal

Timer/Counter which performs many functions. A number of

options are available i.e. HF-input, GPIB-interface and high

stability oscillator.

A rack-mount kit and a carrying case are also available as

accessories.

Rear View

S) Rear feet.

T) Screws for removing the cover.

U) External-reference-input, BNC connector.

V) Voltage-range selector.

W) Power-inlet socket.

X) GPIB interface-connector (optional).

Y) GPIB address-selector ( option).

Product Presentation

2-2 General

M AINS TRANSFORM ER

INCLUDED OPTIONS

OPTION 08

OPTION 07

OPTION 04

ADDRESS

10M H z 0.5-15V rm s

IE E E 4 8 8 IN T E R F A C E

EXT REF INPUT

OPTION

TALK O N LY

LR 39484

VOLTAGE

SELECTOR

OFF

8421

ON DC1, DT1

S R 1 , R L 1

S H 1 , A H 1

FUNCTIONS:

SUPPO RTED

T 5 , L 4

T H E R M A L F U S E IN

T U

OPTION

Figure 2-1 Rear View

Front View

A) Power switch.

B) Reset button, doubles as Local button if the

Timer/Counter is equipped with an GPIB interface.

Starts and stops counting if the TOT A MAN func-

tion is selected.

C) Measuring-time selector-button. *

D) Function-selector button. *

E) Display-hold button. Freezes the display.

F) COM B via A button connects the signal on input A

to input B. The Input-A attenuator and AC/DC

switch affect both inputs.

G) Input-C BNC-connector (optional).

H) Input-A BNC-connector.

I) Set value button, depress to set sensitivity (AC) or

trigger level (DC).

J) Auto level, starts automatic trigger level setting. If

‘Set Value’ is selected, this button is used to in-

crease the value.

K) Read level, displays trigger levels. If ‘Set Value’ is

depressed, this button is used to decrease the

value.

L) Input-B BNC-connector.

M) Trigger indicators.

N) Attenuator buttons.

O) Slope selection buttons.

P) DC or AC coupling selection buttons.

Q) Large LCD-display.

R) Tilting support.

* The selected function is indicated on the display. A

short press on the button moves the cursor one

step to the right. A long press makes the cursor

scroll.

Product Presentation

2-3 Front View

SET A SET B

35pF

ATTx1

FREQ

STANDBY

HOLD

DISPL

TO T A

COMMON

P E R IO D T IM ERATIO

A/B

START/STO P

TO TALIZE A

LO C A L

RESET

AA-B

FU NC TIO N

HOLD

DISPLAY

B via A

T O T A T O T A V O L T A

MAX-MIN

B via A

COM M ON

BMAN

LEV E L

READ

REF

EXT

LEV E L

AUTO

35pF

ATTx1

M AX 30Vrm s

DC - 160M Hz

LEVEL

AUTO READ

LEVEL

DC TRIG G ER LEVEL

DC DC

x10

AC SENSITIVITY

AC x10

SINGLE

TIM E

M EAS

10s

M EASURING TIM E

0.2s 1s

FREQ

M AX 12Vrm s

70M H z - 1.3G H z

M AX 30Vrm s

50 W 1M 91M 9

ABCD

PON

Figure 2-2 Front View

This page is intentionally left blank.

Product Presentation

2-4 Front View

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