Equipment information

Kenwood VT-187 Analog multimeter
Manufacturer:
Model:
VT-187
Date:
1998
Category:
Group:
Description:
2ch AC Voltmeter

Information

General A Signal voltage to be measured, which is input from the INPUT connector, is passed through the First Attenuator and is converted to a low impedance by the Impedance Converter. The impedance-converted signal is normalized, or further attenuated in proportion to 1mV rms fullscale value through the Second and Third Attenuator. The normalized signal is magnified 20-fold by the Main Amplifier and is fed to the Output Amplifier and the Absolute-Mean Value Detector. The Output Amplifier magnifies the signal 50-fold and feeds to the OUTPUT connector. The Absolute-Mean Value Detector converts the signal from the Main Amplifier to DC current in proportion to the absolute mean value. The converted signal activates the Meter. The Attenuator Control encodes the signal led from the RANGE selector to generate an Attenuator Control signal. This signal controls the First, Second and Third Attenuator to set the sensitivity corresponding to each range. The Power supply feeds to the functional circuit ±5V DC voltages stabilized by its IC regulator.

show more

Service Manual
Manual Type:
Service Manual
Pages:
28
Size:
1.29 Mbytes (1353153 Bytes)
Language:
english
Revision:
Manual-ID:
B51-1134-00
Date:
01 August 1998
Quality:
Electronic document, no scan, very well readable.
Upload date:
20 May 2018
MD5:
44badf01da2517d71621901ed56eaf28
Downloads:
1546

Information

SPECIFICATIONS ... 3 SAFETY ... 4 CIRCUIT DESCRIPTION ... 5 BLOCK DIAGRAM ... 6 ADJUSTMENT ... 7 PARTS LIST (UNIT) ... 10 PARTS LIST (ELECTRICAL) ... 11 SCHEMATIC DIAGRAM ... 16 P.C. BOARD ... 26

show more

Add Comment

* Required information
1000
Captcha Image

Comments

No comments yet. Be the first!