Device cables

This page contains information and teardown photos of various multimeter PC connectivity cables and adapters.

Agilent U1173A

The Agilent U1173A is an IR-USB cable.

Hardware:

• Prolific PL2303HX (max. baudrate 19200, according to the Agilent website)

Works with:

• Agilent U1230/40/50/70 series
• Note: For the U1240 series, the additional U1179A IR bracket is required.¹

Where to buy:

• TODO.

• 

  Device, front

• 

  PCB, front

• 

  PCB, back

Agilent U1177A

The Agilent U1177A is an IR-Bluetooth interface module.

Notes: 9600 baud, 8n1 settings on the PC. The protocol (AT commands) allows changing the baud rate to 19200, among other things.¹ Default Bluetooth PIN: 1234. For the U1240 series, the additional U1179A IR bracket is required.²

Hardware:

• CSR BC417...
• Macronix MX...
• PCB markings: U1177-26500, REV004, MSD-02

Works with:

• Agilent U1230/40/50/70 series

Where to buy:

• TODO.

• 

  Device, front

• 

  Device, back

• 

  Battery compartment

• 

  PCB, front

• 

  PCB, back

Amprobe 38SW-A

The Amprobe 38SW-A is an RS232 PC interface cable for the Amprobe 38XR-A multimeter. The "38SW-A" name is also used to refer to the respective PC software for use with the serial cable.

Hardware:

• TODO.

Works with:

• Amprobe 38XR-A

Where to buy:

• Digikey, TME.eu, RS Components, Mercateo, testersandtools.com, Newark, Distrelec, and various others.
• The usual price is around €20-€35, depending on vendor and location.

• 

  Package, top

• 

  Package, bottom

• 

  Cable, top

• 

  Cable, bottom

• 

  CD-ROM, top

• 

  CD-ROM, bottom

• 

  CD-ROM, contents

• 

  Cable, opened

• 

  Housing 1

• 

  Housing 2

• 

  PCB, top

• 

  PCB, bottom

• 

  PCB, pinout

Brymen BU-86X

TODO.

Hardware:

• TODO.

Works with:

• Brymen BM867/BM869

Where to buy:

• TODO.

Fluke IR189USB

The Fluke IR189USB is a USB interface cable for Fluke-18x and 28x series DMMs. It is a basic USB-serial cable, based on the FTDI FT232RL chip.

• 
• 
• 
• 

Fluke OC4USB

The Fluke OC4USB is a USB interface cable for the Fluke 120 series, 190 series scope meter, and the 430 series power quality analyzer.

Resources:

• DIY optical link cable for the Fluke Scopemeter 190 series

Fluke PM9080

The Fluke PM9080 is an RS232 interface cable for "digital hard-copy output to serial printer or remote control via a PC". It works for the Fluke scope meter test tools, power harmonics analyzers, graphical multimeters and multifunction counters.

The max. supported baud rate is 57600.

Resources:

• DIY optical link cable for the Fluke Scopemeter 190 series

GreenLee DMSC-9U

TODO.

Hardware:

• TODO.

Works with:

• GreenLee DM-800 series, DML-430A

Where to buy:

• TODO.

MASTECH MAS34X cable

TODO.

Hardware:

• TODO.

Works with:

• MASTECH MAS345, others

Where to buy:

• TODO.

• 

  Cable

• 

  Cable, connected

UNI-T UT-D01

TODO.

Hardware:

• TODO.

Works with:

• UNI-T UT61D/...
• Voltcraft VC820/VC840/...

Where to buy:

• Reichelt
• Conrad/Voltcraft

• 

  Cable

• 

  Cable, IR

• 

  Cable, open

• 

  PCB, front

• 

  PCB, back

UNI-T UT-D04

The UNI-T UT-D04 is a USB/HID cable for various UNI-T multimeters (and rebranded models) with PC connectivity.

Hardware:

• WCH CH9325 (WCH = Nanjing QinHeng Electronics Co., Ltd.)

Works with:

• UNI-T UT61D/...
• Voltcraft VC820/VC840/...
• TODO

Where to buy:

• Reichelt
• Conrad/Voltcraft

• 

  Cable

• 

  Cable, IR

• 

  Attached cable

• 

  Opened 1

• 

  Opened 2

• 

  PCB, front

• 

  PCB, back

V&A VA4000

The V&A VA4000 is a USB PC interface cable for various V&A multimeters.

It seems there have been at least two different revisions of the cable. The older one used a Sunplus SPCP825 USB-to-serial chip (see here, here, or also check the drivers from here), the newer revisions use a Prolific PL2303HX chip.

Hardware (old cable version):

• USB to serial chip: Sunplus SPCP825
• Crystal: ?

Hardware (new cable version):

• USB to serial chip: Prolific PL2303HX YR0903A
• Crystal: 12MHz

Works with:

• TODO.

Where to buy:

• TODO.

• 

  USB cable

• 

  USB cable PCB, front

• 

  USB cable PCB, back

V&A VA4001

The V&A VA4001 is an RS232 PC interface cable for various V&A multimeters.

TODO.

Victor 86C USB cable

The Victor 86C PC interface cable (doesn't seem to have a specific name or part number) contains a USB/HID chip.

Hardware:

• USB/HID chip: Unmarked SO-20 chip

Works with:

• Victor 86C. Maybe other Victor models(?)

Where to buy:

• The cable ships with the Victor 86C. It's unclear whether it can be bought standalone (without DMM).

• 

  USB cable

• 

  USB cable, open

• 

  USB cable PCB, front

• 

  USB cable PCB, back

Reverse engineered pinout of the unknown USB/HID chip:

20	19	18	17	16	15	14	13	12	11
——	——	——	5V	——	——	D+/-	D+/-	——	~6MHz clock (?)
1	2	3	4	5	6	7	8	9	10
RXD	——	——	——	——	——	GND	——	——	——