Difference between revisions of "Brymen BM857"
Jump to navigation
Jump to search
(→Photos) |
|||
(3 intermediate revisions by the same user not shown) | |||
Line 2: | Line 2: | ||
| image = [[File:Bm_857_mugshot_500000.png|180px]] | | image = [[File:Bm_857_mugshot_500000.png|180px]] | ||
| name = Brymen BM857 | | name = Brymen BM857 | ||
| status = | | status = supported | ||
| source_code_dir = brymen-dmm | | source_code_dir = brymen-dmm | ||
| counts = 50000, 500000(DCV), 999999(Hz) | | counts = 50000, 500000(DCV), 999999(Hz) | ||
Line 8: | Line 8: | ||
| connectivity = RS232 | | connectivity = RS232 | ||
| measurements = voltage, frequency, diode, resistance, continuity, capacitance, current | | measurements = voltage, frequency, diode, resistance, continuity, capacitance, current | ||
| features = autorange, data hold, crest, backlight, true-rms, dBmW<sup>1</sup> | | features = autorange, data hold, crest, backlight, true-rms, dBmW<sup>1</sup>, %4-20mA | ||
| website = [http://brymen.com/product-html/cata850a/Bm850as.htm brymen.com] | | website = [http://brymen.com/product-html/cata850a/Bm850as.htm brymen.com] | ||
}} | }} | ||
Line 63: | Line 63: | ||
'''Cable:''' | '''Cable:''' | ||
This can use either the BC-85X or the BC-85X-1 cables. See [[Device_cables#Brymen_BC-85X(-1)]]. | |||
Currently, mrnuke is working on an improvised USB-to-infrared converter | Currently, mrnuke is working on an improvised USB-to-infrared converter cable. See [[User_talk:Mrnuke#BM857_PC_interface_cable]] for more details. | ||
See [[User_talk:Mrnuke#BM857_PC_interface_cable]] for more details. | |||
<gallery> | |||
File:Brymen_br85x_dmm_hookup_all.jpg|<small>Cable hookup</small> | |||
File:Brymen_br85x_dmm_hookup_side.jpg|<small>Cable hookup, detail</small> | |||
File:Brymen_br85x_dmm_hookup_angle.jpg|<small>Cable hookup, closeup</small> | |||
File:Brymen_br85x_dmm_hookup_top.jpg|<small>Cable hookup, top detail</small> | |||
</gallery> | |||
== Protocol == | == Protocol == | ||
Line 79: | Line 84: | ||
[[Category:Device]] | [[Category:Device]] | ||
[[Category:Multimeter]] | [[Category:Multimeter]] | ||
[[Category: | [[Category:Supported]] |
Revision as of 18:51, 2 February 2013
Status | supported |
---|---|
Source code | brymen-dmm |
Counts | 50000, 500000(DCV), 999999(Hz) |
IEC 61010-1 | CAT III (1000V) / CAT IV (600V) |
Connectivity | RS232 |
Measurements | voltage, frequency, diode, resistance, continuity, capacitance, current |
Features | autorange, data hold, crest, backlight, true-rms, dBmW1, %4-20mA |
Website | brymen.com |
The Brymen BM857 is a 50000 counts (500000 DC), CAT III (1000V) / CAT IV (600V) handheld digital multimeter with RS232 connectivity.
1: The reference impedance is selectable from 4Ω to 1200Ω. It is not limited to reference impedance of 600Ω.
Hardware
Multimeter:
- Multimeter IC: TBD
- Precision +2.5V Voltage reference: Analog Devices REF43
- True RMS-to-DC converter: Analog Devices AD737
- EEPROM(?): Chip marked S24C0.
- Unidentified: Several 062-JRC chips. These appear to be JFET opamps.
- Unidentified: Two QFP64 chips.
- TODO
Cable:
- TODO
See User_talk:Mrnuke#BM857_PC_Interface_cable
Photos
Multimeter:
Cable:
This can use either the BC-85X or the BC-85X-1 cables. See Device_cables#Brymen_BC-85X(-1).
Currently, mrnuke is working on an improvised USB-to-infrared converter cable. See User_talk:Mrnuke#BM857_PC_interface_cable for more details.
Protocol
TODO
Resources
TODO