Philips pm2521 - DIRECT VOLTAGE MEASUREMENTS IN RELATIVE REFERENCE MODE (ZERO SET); 6.4.1.2. Alternating voltage measurements (V~ rms); ALTERNATING VOLTAGE MEASUREMENTS

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DIRECT VOLTAGE MEASUREMENTS IN RELATIVE REFERENCE MODE (ZERO SET)
— Measure the direct voltage as described above.
— Depress pushbutton ZERO SET.
Remark:
The display will be held for one second and a Z will appear on the right-hand side of the display. The value
which is or^tlfe display during this one second is the relative reference value. After this one second the
display jumps to zero and the indication ZS (ZERO SET) will appear on the display. The PM 2521 has now
been switched to the relative reference (ZERO SET) mode. In the relative reference mode the PM 2521
switches to manual ranging*. Each subsequent reading will indicate the positive or negative deviation from the
relative reference value.
— To leave the relative reference mode, depress pushbutton ZERO SET again.
Remark:
Overload is indicated with OL on the display (Input signal > 21000).
In range 2000 V overload is also indicated at 2100.0 V.
However, the maxiitium input voltage is 1000 V-rrr, 1400 V peak.
The maximum reading on the display is 40000.
6.4.1.2. Alternating voltage measurements (V~ rms)
GENERAL
The PM 2521 measures the RMS value of the AC Input signal. As the AC function of the PM 2521 is AC coupled
a DC component in the AC input signal is blocked. The DC component is not included in the measuring result.
ALTERNATING VOLTAGE MEASUREMENTS
— Select function V~ rms with the function selector.
— Select the manual or automatic ranging mode with pushbuy:on AUTO/MAN*.
Remark:
Manual ranging is indicated with a * on the display. In automatic ranging mode the UP level is 20200 and the
DOWN level is 01800.
— Select in manual ranging mode the correct range with pushbutton UP or DOWN.
|temark:
Available ranges are: 200.00 mV
2.0000 V
20.000 V
200.00 V
2000.0 V
Overload is indicated with OL on the display (Display > 21000). In range 2000 V overload is also indicated at
21000 V. However, the maximum input voltage is 600 V rms.
If the display is < 0.5 % of end of range (100 digits) the display will indicate zero.
— Connect the voltage source to the 0 and V terminal.