Device cables

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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:

Where to buy:

  • 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 DMMs.

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:

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:

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:

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:

  • 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:

  • 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:

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