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SOLID STATE
FIELD  MULTIMETER   » UM-Z2 «



SOLID STATE MULTIMETER  » UM-Z2 «  ZAKLAD ELEKTRONICZNO-MECHANICZNY / Poland   (1970)
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Dimension:  ( W - D - H )    80 mm x 130 mm x 45 mm     /    3_1/8" x 5_1/8" x 1_3/4"

Class 2.5 ;   100 kΩ / Volt ( DC & AC )                                 R A N G E S :

  Volt   |           0.05    0.15    0.5    1.5    5    15    50    150    500    [V]
---------+---------------------------------------------------------------------------
  Ampere |  0.015    0.05    0.15    0.5    1.5    5    15    50    150    500   [mA]
---------+---------------------------------------------------------------------------
  Ohm    |           x100    x1k     x10k   x100k                                 [Ω]
---------+---------------------------------------------------------------------------
  Output |           - 20  ..  0  ..  +6                                         [dB]

Analog "Solid State" MultiMeters were the "Link" between "VTVMs" and  Digital "DVMs".
Instead of Vacuum Tubes,  here an  Operational Amplifier ( Type 741 ) and Transistors
insure the high Input-Resistance.  This well designed & handy  "Field MultiMeter"  is
powered by a  9 V Block-Battery and came in a  Leather-Case.  The ON/OFF-Switch ( ON-
Status is shown by a RED LED )  is also used as  ZERO-OHM-Adjust.  The DC-POLARITY of
the Test-Object is shown by +/- LEDs.  When measuring  AC  both LEDs are illuminated. 

The »UM-Z2«  DIAGRAM ...

 

              For stationary/long-term usage is an EXTERN 9 VOLT CONNECTION available

                       Back to the VTVM = Vacuum Tube Volt Meter
impressum:
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© C.HAMANN             http://public.beuth-hochschule.de/~hamann             02/02/15