Digital Multimeters
VOAC7523H / 7522H / 7520H / 7521H
● Display digits 5.5-digit
● Isolated 2-channel input (VOAC7523H / VOAC7520H only)
● Dual function and dual display
● DCV max. resolution 0.1µV
● 4-terminal resistance measurement (VOAC7522H / VOAC7521H only)
● DC, AC, (DC+AC) 10A range
Isolated 2-channel input (VOAC7523H / VOAC7520H only)
The VOAC7523H/VOAC7520H can measure two independent voltage systems. This allows measurement of two potential differences or input and output voltages in a circuit with a single unit. The figure on the right shows an example connection.
Dual function and dual display
Conventional measuring instruments require disconnecting input cables and switching functions in order to perform different measurements; the VOAC752xH series can perform measurements that used to require multiple units with a single unit, thereby improving the efficiency of measurement work. For example, if you want to measure power consumption (apparent power, VA), you can measure and calculate voltage and current with a single unit, allowing you to measure power in real time.
* The units (V, A, Hz) on the display are not shown on the actual device. The units of data on the left side of the display are indicated by the corresponding “FUNCTION” key lighting up. The units (V, A, Ω/AC, dBm) of the data on the right side are indicated by LED lights in the “SUB DISP UNITS” section in the upper right portion of the display. See the “Specifications” page for details.
Maximum display 509999
The number of displayed digits does not change for the VOAC752xH series.
1.00000V when measuring 1V
5.00000V when measuring 5V
Three types of interfaces are available
The standard interface is RS-232. You can select LAN (Ethernet 10BASE-T) or GP-IB optionally.
Long interval measurement up to 3000 hours
The interval measurement, which can be configured from 10ms to 3600s, and the data storage function with up to 3000 timestamps can be used to measure from 30s to 3000 hours.
True RMS value measurement
True RMS AC voltage and AC current can be measured. RMS values including DC can also be measured.
Versatile computing functions
You can perform decibel operations (dBm, dBµ), scaling operations (SCLE), moving averages (AVG), differential operations (REL), statistical operations (MAX, MIN, X, σ), comparison operations (COMP), and arithmetic operations between dual functions.
Front panel
1.Easy-to-read fluorescent display tube
The single display shows the measured value and its attribute information (time stamp, function, and range), while the dual display shows the measured value for the left and right different functions. The photo above shows a dual display of two DCVs. The photo above shows a dual display of two DCVs. Single display can also be shown as shown on the right.
2.Signal input section
VOAC7523H / VOAC7520H is a common input section for voltage, resistance, temperature, and frequency, 0.5A and 10A current inputs, and CH-B measurement input section. In the VOAC7522H / VOAC7521H, the CH-B measurement input section is the 4-terminal resistance measurement input section.
3.FUNCTION area
You can select measurement items. The button corresponding to the function currently being measured lights up.
4.RANGE area
The measurement range can be selected. In the case of AUTO range, measurement is made at the optimum range according to the input signal.
5.SAMPLE area
Allows selection of measurement sample rate, retention of measurements and single measurements.
6.SUB DISP UNITS area
The units on the sub side (right side) of the dual display are indicated by the lighting of LEDs.
7.DISP area
Switch between single-display and dual-display measurements, and switch between main and sub-functions.
8.UTILITY area
It is possible to select calculation items, save and read measurement data and panel settings, and configure system settings.
| Setting items | Description of contents |
|---|---|
| REF | Reference value setting (any value) |
| AVG | Averaging count setting(2～255) |
| COMP | Comparator operation comparison value setting (upper and lower limit setting) |
| SCLE | Scaling operation (X- A) × B / C, D / X to set any number |
| MAX / MIN | Statistical calculation mode setting (calculates maximum, minimum, mean, and standard deviation within a specified number of samples). In addition, the continuous (CONT) operation performs a peak hold of the maximum and minimum values during the measurement period. |
| Ω < | Threshold operation for continuity test (continuity test can be performed simultaneously with resistance measurement) |
Back Panel
* SC-351 and SC-353 cannot be installed at the same time.
