Link Cables

HP connectors and Link cables

Calculators

HP48

The 4 pins male connector of the HP-48 models.

HP40G

The 10 pins male connector of the HP-38G, HP-39G, HP-40G and HP-49G models.

HP39G

Mini USB connector on the later models

Mini USB and a mini RS232 port for the HP-39GS , HP-40GS and HP-50G.

Palmtops

A 4 pins male connector for the HP-95LXPalmtop. Same connector/cable as used for HP-48 calculators.

A 10 pins male connector for the HP-100LX, HP-200LX and HP-1000CX Palmtop.
This connector has a larger keying and a different pinout compared to the 10 pins connector used for the HP-38G.!

Cables and adapters

Connector types:


4 pins connector HP-48 series and HP-95LX	10 pins connector HP38-39-40 series	10 pins connector HP Palmtops (not HP-95LX)


DB9 female	4 pins female	10 pins female with small keying	10 pins female with large keying
Connector on computer side.	HP48 series and HP95LX	HP39 -39 -40 series	Palmtops

Pinout:

Pin number	DB9	4 pins	10 pins calculator	10 pins palmtop
SHIELD	SHIELD	SHIELD	SHIELD	SHIELD
1	DCD*	GND	GND	DCD*
2	RX	TX	TX	TX
3	TX	RX	RX	RX
4	DTR*	SHIELD		DTR*
5	GND			GND
6	DSR*			DTR*
7	RTS*			CTS*
8	CTS*			RTS*
9	RI*			RI*
10			SHIELD	SHIELD

* Used for hardware hand-shaking. Not used by the calculators for serial data transfer.

HP-48 series / 4 pins

82208-80001
82208-80009 (same as 82208-80001 but with ferrite bead)

Serial interface cable to link the HP-48 models to a PC.
A 4 pins female to a DB9 female link cable.

HP-38G/39G/40G series / 10 pins with small keying

F1897-66000 ( 150 cm)

Used for the HP-38G, HP-39G and HP-40G models.

10 pins female to DB9 female link cable.

F1633-66000 (70 cm)
F1633-66050 (120 cm)

Link cable between two HP-38G, HP-39G, HP-40G and HP-49G calculators. On both ends a10 pins female plug with small keying.

Palmtop series / 10 pins with large keying

F1015-80002

Link cable for the palmtop series, (exept the HP-100LX).
DB9 female to 10 pins female with large keying.

HP-48GII - USB

Part number unknown

Mini USB to DB9 cable. Used for the HP48GII.

Adapters

	5181-6643 Used to convert the F1015-80002 palmtop cable to an HP-48 series link cable. Adapter from 10 pins male with large keying to 4 pins female.
	F1633-66001 Adapter to convert the F1633-660X0 cable as a link cable between an HP- 49G and an HP-48G. Adapter from 10 pins male with small keying to 4 pins female.
	F1906-66000 Used to change the F1906-66000 cable into a link cable for the PC. Adapter from DB9 female to 10 pins male with small keying.
	82208-80002 Universal DB25 female to DB9 male adapter. Only pins 2, 3, 5 and the shield are connected.

Links related to link cables

HP 48 I/O Technical Interfacing Guide
HP Cable Table by Joseph K. Horn.
Description of some HP cables & adapters by Enrico Carta