Keithley 177: Difference between revisions

Revision as of 12:48, 26 May 2024

Keithley 177
4½-digit digital multimeter Keithley 177 Produced from (?) to (?) Manuals Keithley 177 + 1788 Manual #29683 (1978) (All manuals in PDF format unless noted otherwise)

Voltage	20 mV (AC: 200 mV) to 1000 V in decade ranges
Current	20 μA (AC: 200 μA) to 2 A in decade ranges
Resistance	20 Ω to 20 MΩ in decade ranges
Power	105–125 or 210-250 V, 50–60 Hz, 8 W
Features	AC True RMS
Options	Option 1788 – Battery pack (6 h runtime) Option 1793 – BCD output (isolated) Option 1793 – GPIB (isolated)

please add

Part	Part Number(s)	Class	Description	Used in
AD536	156-1259-00	Monolithic integrated circuit	RMS/DC converter	DM501A • DM502A • DM5010 • Keithley 177 • Keithley 179 • Keithley 195A
Intersil ICL8052		Monolithic integrated circuit	4½ digit A/D converter	Keithley 177 • Keithley 179 • Keithley 480

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 * [https://www.youtube.com/watch?app=desktop&v=MyJ6Qbb58Fw Refurbishing a Keithley 177 Microvolt DMM] – Craig Hollinger @ YouTube
 * [https://samueldperry.com/2019/03/03/keithley-177-power-supply-replacement/ Power Supply Replacement for Keithley 177] (to replace failed transformer) / [https://www.tindie.com/products/sdp8483/power-supply-replacement-for-keithley-177/ PCB project @ Tindie]
+* See also [[Keithley 197]]
 ==Pictures==