Difference between revisions of "RadioShack 22-168"

From sigrok
Jump to navigation Jump to search
 
(9 intermediate revisions by 2 users not shown)
Line 1: Line 1:
[[File:Rs_22_168_angle.png|thumb|right|RadioShack 22-168]]
{{Infobox multimeter
| image          = [[File:Rs_22_168_angle.png|180px]]
| name            = RadioShack 22-168
| status          = supported
| source_code_dir = serial-dmm
| counts          = 2000
| categories      = Unspecified
| connectivity    = RS232
| measurements    = voltage, current, resistance, capacitance, continuity, diode, logic, frequency, hFE
| features        = data hold, min/max, 10 reading memory
| website        = [http://support.radioshack.com/productinfo/DocumentResults.asp?sku_id=22-168&Name=Meters%20and%20Scopes&Reuse=N radioshack.com]
}}


The [http://support.radioshack.com/productinfo/DocumentResults.asp?sku_id=22-168&Name=Meters%20and%20Scopes&Reuse=N RadioShack 22-168] is a 2000 counts handheld digital multimeter with RS-232 connectivity.
The '''RadioShack 22-168''' is a 2000 counts handheld digital multimeter with RS-232 connectivity.


== Hardware ==
== Hardware ==
Line 49: Line 60:
File:Rs_22_168_lcd.jpg|<small>LCD display</small>
File:Rs_22_168_lcd.jpg|<small>LCD display</small>
File:Rs_22_168_lcd_back.jpg|<small>LCD display, back</small>
File:Rs_22_168_lcd_back.jpg|<small>LCD display, back</small>
File:Rs_22_168_vagina.jpg|<small>RS-232 interface port</small>
Rs_22_168_rs232_interface_port.jpg|<small>RS-232 interface port</small>
File:Rs_22_168_cable_mated.jpg|<small>RS-232 cable, mated</small>
File:Rs_22_168_cable_mated.jpg|<small>RS-232 cable, mated</small>
</gallery>
</gallery>


'''Cable:'''
'''Cable:'''
<gallery>
 
File:Rs_22_168_cable.jpg|<small>RS-232 cable</small>
See [[Device_cables#Metex_5-pin_RS232_cable]].
File:Rs_22_168_cable_dmm_end.jpg|<small>DMM connector</small>
File:Rs_22_168_cable_dmm_end_exposed.jpg|<small>DMM connector, protective sheath removed</small>
File:Rs_22_168_cable_internals.jpg|<small>DB9 connector, opened</small>
File:Rs_22_168_cable_connection.jpg|<small>DB9 connections</small>
</gallery>


== Protocol ==
== Protocol ==


TODO
See [[Multimeter_ICs#Metex_14-byte_ASCII]].


== Resources ==
== Resources ==


* [https://www.radioshack.com/search/softwareResults.jsp?kw=22-168 Vendor software]
* [http://www.radioshack.com/graphics/uc/rsk/Support/SoftwareDownload/2200168.exe Software download]
* [http://www.radioshack.com/graphics/uc/rsk/Support/SoftwareDownload/2200168.exe Software download]
* [http://www.linuxtoys.org/dvm/dvm.html linuxtoys.org: Radio Shack DMM with RS-232]
* [http://www.linuxtoys.org/dvm/dvm.html linuxtoys.org: Radio Shack DMM with RS-232]
Line 73: Line 80:
[[Category:Device]]
[[Category:Device]]
[[Category:Multimeter]]
[[Category:Multimeter]]
[[Category:Planned]]
[[Category:Supported]]

Latest revision as of 06:37, 21 March 2013

RadioShack 22-168
Rs 22 168 angle.png
Status supported
Source code serial-dmm
Counts 2000
IEC 61010-1 Unspecified
Connectivity RS232
Measurements voltage, current, resistance, capacitance, continuity, diode, logic, frequency, hFE
Features data hold, min/max, 10 reading memory
Website radioshack.com

The RadioShack 22-168 is a 2000 counts handheld digital multimeter with RS-232 connectivity.

Hardware

  • 3 1/2 digit ADC with bandgap reference: Maxim MAX130CPL (datasheet) (marking: "Maxim MAX130CPL 0138-3 C10039")
  • CPU: Metex KS57C2016 (Samsung KS57C2016 4-bit microcontroller with custom Metex firmware) (marking: "Metex 93D3 KS57C2016-02 410")
  • ?: Metex 9005 (marking has ST logo: "Metex 9005 MET7ACS 92A32792BA")
  • Crystal: 4.1856MHz crystal
  • 555 timer: Intersil ICM7555CBA (datasheet) (marking: "H 7555 CBA L405")
  • Quad analog switch/quad multiplexer: Motorola 14066B (datasheet) (marking: "14066B XAC334")
  • Quad 2-input NAND gate: GD4011BD
  • Optoisolator: Lite-ON LTV-817
  • Unidentified ICs: Two ICs, which appear to be SSOP8 packages are hidden behind black goo. The purpose of the goo is unknown.

Photos

  • Device, angle

  • Mugshot

  • Device, back

  • "Metex" logo on the stand

  • Battery compartment

  • Battery cover

  • Opened up

  • Spare fuse

  • Front cover, PCB still mounted

  • Front cover

  • Rear cover

  • Bare electronics

  • Range-switch sandwiched between PCBs

  • Range-switch

  • Main PCB, front

  • Secondary PCB, front

  • Secondary PCB, back

  • Main PCB, front, illuminated

  • Main PCB, back, illuminated

  • Secondary PCB, front, illuminated

  • Secondary PCB, back, illuminated

  • Unidentified components protected by black coating

  • Metex KS57C2016 CPU

  • 4.1856 MHz crystal

  • MAX130CPL ADC

  • Metex 9005 7ACS (ST Micro logo)

  • MC14066B Quad Analog Switch/Quad Multiplexer (left) and GD4011BD quad 2-input NAND gate (right)

  • 555 Timer

  • RS-232 optoisolation

  • LCD display

  • LCD display, back

  • RS-232 interface port

  • RS-232 cable, mated

Cable:

See Device_cables#Metex_5-pin_RS232_cable.

Protocol

See Multimeter_ICs#Metex_14-byte_ASCII.

Resources

Retrieved from "https://sigrok.org/w/index.php?title=RadioShack_22-168&oldid=6055"