HP 48SX Scientific Expandable Calculator User Manual - Volume II

1. Introduction to the HP 48SX

This document serves as Volume II of the comprehensive user manual for the HP 48SX Scientific Expandable Calculator. It is designed to guide users through the advanced functionalities, programming capabilities, and intricate operations of this powerful scientific instrument. Familiarity with basic calculator operations, as covered in Volume I, is recommended for optimal use of this manual.

The HP 48SX is renowned for its Reverse Polish Notation (RPN) entry system, extensive graphing capabilities, and expandability via memory cards. This volume delves deeper into these features, enabling users to unlock the full potential of their calculator for complex scientific, engineering, and mathematical tasks.

Figure 1: The HP 48SX Scientific Expandable Calculator. This image displays the calculator's physical layout, including its keypad, display, and expansion slots.

2. Installation et configuration initiale

2.1 Installation de la batterie

The HP 48SX operates on three AAA batteries. Proper installation is crucial for functionality.

1. Repérez le couvercle du compartiment à piles à l'arrière de la calculatrice.
2. Retirez le couvercle en suivant le sens indiqué par la flèche.
3. Insert three fresh AAA batteries, ensuring correct polarity (+/-) as marked inside the compartment.
4. Remettez le couvercle du compartiment à piles en vous assurant qu'il s'enclenche correctement.

2.2 Initial Power-On and Display Adjustment

Après l'installation de la batterie, appuyez sur ON key to power on the calculator. The display contrast can be adjusted for optimal viewing.

• To increase contrast: Press and hold the ON touche, puis appuyez sur la touche + clé.
• To decrease contrast: Press and hold the ON touche, puis appuyez sur la touche - clé.

2.3 Installation de la carte mémoire (facultatif)

The HP 48SX features two expansion slots for memory cards, allowing for increased storage and specialized applications.

1. Assurez-vous que la calculatrice est éteinte.
2. Locate the expansion slots on the top edge of the calculator.
3. Carefully insert the memory card into an available slot, ensuring the correct orientation. Do not force the card.
4. Press firmly until the card is seated securely.
5. Power on the calculator. The system should detect the new memory card.

3. Operating the HP 48SX: Advanced Functions

This section covers advanced operations, building upon the basic functions detailed in Volume I.

3.1 Understanding the RPN Stack

The HP 48SX utilizes Reverse Polish Notation (RPN), where operands are entered before the operator. The stack is a fundamental concept in RPN, holding intermediate results.

• Saisie des numéros : Type the number, then press ENTRER. This pushes the number onto the stack.
• Performing Operations: Enter the operands, then press the desired operator key (e.g., +, -, *, /). The operation is performed on the top two stack levels, and the result replaces them.
• Stack Manipulation: Des clés comme BAISSE, ÉCHANGER, ROULER, et DUP are used to manage stack contents.

3.2 Advanced Mathematical Functions

Access advanced functions via the CHANGEMENT keys (left-shift LS and right-shift RS) and menus.

• Fonctions trigonométriques : PÉCHÉ, COS, TANNÉ and their inverses are directly accessible or via shifted keys. Ensure the correct angle mode (degrees, radians, grads) is selected using the MODES menu.
• Fonctions logarithmiques : LN (natural logarithm) and ENREGISTRER (base 10 logarithm) are available.
• Nombres complexes : The HP 48SX supports complex number arithmetic. Enter complex numbers as (real, imaginary).
• Opérations matricielles : Create and manipulate matrices using the MATRICE menu. Operations include addition, subtraction, multiplication, inversion, and determinants.

3.3 Représentation graphique des fonctions

The calculator can plot various types of graphs.

1. Presse PARCELLE to access the plotting menu.
2. Select the desired plot type (e.g., FONCTION, PARAMÉTRIQUE, POLAIRE, CONIQUE).
3. Enter the function(s) to be plotted.
4. Ajustez le viewing window (X-RANGE, Y-RANGE) au besoin.
5. Presse DESSINER pour afficher le graphique.

3.4 Programming with RPL

The HP 48SX uses RPL (Reverse Polish Lisp) for programming. Programs are stored as objects.

1. To create a new program, enter << (left-shift ALPHA [) followed by the program commands, and then >> (right-shift ALPHA ]).
2. Store the program by typing its name (e.g., 'MYPROG') and pressing STO.
3. To execute a program, type its name and press ÉVALUER, or press the corresponding softkey if assigned.
4. Common programming constructs include IF...THEN...ELSE...END, FOR...NEXT, et DO...UNTIL...END.

4. Maintenance et entretien

4.1 Cleaning the Calculator

To ensure longevity and proper function, keep your HP 48SX clean.

• Utilisez un chiffon doux et non pelucheux légèrement dampterminer avec de l'eau ou un nettoyant doux et non abrasif.
• Avoid harsh chemicals, solvents, or abrasive materials, as these can damage the display or casing.
• Do not spray cleaning solutions directly onto the calculator.

4.2 Remplacement de la batterie

Replace batteries promptly when the low battery indicator appears on the display to prevent data loss.

• Suivez les étapes d'installation de la batterie décrites dans la section 2.1.
• It is recommended to replace all three AAA batteries simultaneously.
• Jetez les piles usagées conformément à la réglementation locale.

4.3 Stockage

When not in use for extended periods, store the calculator in a cool, dry place, away from direct sunlight and extreme temperatures. Consider removing batteries if storing for several months to prevent leakage.

5. Dépannage des problèmes courants

This section addresses common problems and their solutions.

5.1 La calculatrice ne s'allume pas

• Vérifiez les piles : Vérifiez que les piles sont correctement installées et non déchargées. Remplacez-les si nécessaire.
• Contacts de batterie : Verify that battery contacts are clean and free of corrosion.
• Réinitialisation matérielle : If the calculator is unresponsive, perform a hard reset by removing all batteries for a few minutes, then reinserting them. Note that this may clear user data.

5.2 Problèmes d'affichage

• Ajuster le contraste : Utilisez le SUR + et ON - key combinations to adjust display contrast (refer to Section 2.2).
• Affichage faible : Cela indique souvent une batterie faible. Remplacez les piles.
• Garbled Display: A hard reset (see 5.1) may resolve temporary display glitches.

5.3 Résultats de calcul incorrects

• Mode angle : For trigonometric functions, ensure the calculator is in the correct angle mode (degrees, radians, or grads). Check the MODES menu.
• RPN Stack: Verify the order of operations and contents of the RPN stack. Incorrect stack manipulation is a common source of errors.
• Unités: Confirm that units are consistent for physical calculations.
• Erreurs du programme : If using a program, review the program code for logical or syntax errors.

6. Spécifications

The following specifications pertain to the HP 48SX Scientific Expandable Calculator.

Remarque: les spécifications peuvent être modifiées sans préavis.