Digital Multimeters
VOAC7523H/7522H/7520H/7521H Options
High voltage, high current and high resistance measurement
Main unit options
SC-351 (LAN interface) ... Photo upper section
This product can be connected to a PC via Ethernet using the TCP/IP network interface. You can also connect the product directly to your PC one-on-one via a cross-network cable.
An external controller (usually a PC is used) can be used to perform button operations on the main unit equivalent to those performed by hand.
This enables not only simple operation, but also collection of measurement result data and construction of automatic measurement systems.
Interface specifications：10Base-T
* GPIB interface SC-353 cannot be mounted simultaneously.
SC-354 (D/A output) ... Photo lower section
Any three digits of the measured value are converted to D/A and output as analog values.
The output voltage can be selected in three ways：±99.9mV/ ±999mV/±9.99V.
The device outputs upper or lower limit values when overloaded.
The figure below shows an example of D/A output with an output range of ±9.99 V.
Floating measured results can be output as D/A output and connected to a sequencer, etc. without the use of an external amplifier.
*1. DIO interface SC-352 cannot be mounted simultaneously.
SC-353 (GPIB interface) ... Photo upper section
This product allows you to control the main unit using the GPIB interface.
An external controller (usually a PC is used) can be used to perform button operations on the main unit equivalent to those performed by hand.
This enables not only simple operation, but also collection of measurement result data and construction of automatic measurement systems.
Electrical, mechanical and functional specifications：Complies with IEEE Std. 488.1-1987 and JIS C 1901-1987
Specifications for command formats, protocols, etc.：Complies with IEEE Std.488.2-1987
* 1 LAN interface SC-351 cannot be mounted simultaneously.
* 2 Compatibility for the command system of IWATSU ELECTRIC digital multimeters VOAC7521H/7520H/7522H/7523H, VOAC7411/7412/7413, and VOAC7510/7511/7512/7513 Series is inherited. However, the optional GP-IB unit SC-303A cannot be mounted.
SC-352 (DIO interface) … Photo lower section
When a comparator operation is performed with the DIO interface (optional) installed, the comparison operation result is output to the HI/GO/LO of the DIO output terminals using an open collector (DC40V, 100mA drive is possible).
The figure below is an example of a connection that uses this output to make a pass/fail judgment.
Indicates when the comparison operation result is GO.
DIO comparator operation timing
Set Yellow-HI/LO/Red-HI/LO in the comparator menu.
After the trigger is entered, the STRB signal indicating the end of measurement becomes “L,” and the threshold selected in the DIO output (YELLOW or RED selection) updates either HI/GO/LO of the output and shorts to GND.
* D/A output SC-354 cannot be mounted simultaneously.
SC-525 (RS232-USB converter) (option)
By adopting a cross cable and using the RS connector as a female connector, it is possible to directly connect the USB port and the measurement equipment.
You can use an external controller (usually using a PC) to perform the same operations as when you manually control using button operation on the main unit. Not only operations, but also measurement result data collection is possible (interface specifications are the same as the standard RS-232).
It can also be used for VOAC752X Series, signal generator SG-41XX Series, universal counter SC-720XH Series, digital oscilloscope BRINGO® Series, etc.
Supported OSs：WindowsXP, Vista, 7, 10
High voltage, high current and high resistance measurement
SC-004 (Measurement lead for high resistance)
Because it uses a shielded cable, it has a structure that is less susceptible to external noise when measuring high resistance.
(Use range 2MΩ to 100MΩ)
Resistance measurement
TKL 90cm BAN [4-wire Kelvin test lead (4-terminal resistor measuring cable)]
By reducing the influence of conductor resistance and contact resistance on the measurement cable, it is possible to measure resistance with high precision. In particular, this is beneficial in the measurement of low resistance (manufactured by PMK).
| Measurement cable length：90cm Wire diameter that can be pinched：Approx. Φ6mm |
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| Detailed dimensions of the clip are here. |
Temperature measurement
SC-0107H (Sheath type thermocouple type K)
This thermocouple is a sheath-shaped temperature sensor that integrates a metal protective tube (sheath) and a detection element.
Between the sheath and the detection element (thermocouple element wire), it is filled tightly with inorganic insulators such as magnesium oxide, maintaining the insulation while leaving the inside airtight to prevent corrosion by gas under air and high temperature. It has excellent earthquake resistance and can be used under adverse conditions such as high temperature, high pressure, and corrosive atmosphere. It can be bent freely, and it can be mounted in places where there is a lot of bending. It has very good features for use, such as a narrow outer diameter, which allows it to be used for temperature detection even in narrow places and for small measured objects. Also useful for measuring liquids and gases
(-40℃～+650℃)
SC-0116 (Thermocouple type K for stationary surfaces)
The most common detector for stationary surface temperature, it detects the surface temperature at a fast response rate of 2 to 3 seconds. The thermocouple wire is also less deformed and can be used in a wide range of applications, from laboratories and experiment facilities to field measurements.
For example, it is suitable for measuring the heating temperature of motors, measuring the rising temperature of transformers, and measuring the temperature of molds.
As long as the sensor part can be contacted vertically, the temperature of various objects can be measured.
(0℃～+500℃)
POMONA 1286 (banana plug)
The measurement terminal of the VOAC752xH Series is a banana plug, but the banana plug terminal does not protrude outside the panel surface of the equipment. This means that bare wires cannot be connected directly, so by using this option, it is possible to directly connect bare wires such as commercial thermocouples.
Test lead for VOAC 752xH (can also be used with VOAC 752x Series)
SC-020 (Test lead)
* Standard accessory
SC-026 (Arrow clip)
You can pinch the measured object by attaching it to the tip of the SC-020. This is convenient for pinching IC lead wires.
(AC30V / DC60V / DC3A)
[To be discontinued after stock is sold out]
SC-023 (Crocodile clip H)
A crocodile clip for high voltage measurement. It is used by attaching it to the tip of SC-020. (600Vrms, CAT II/10A)
* CAT II：Primary circuit of equipment with power cord connected to outlets (household appliances, portable tools, etc.)
Note：BRINGO is a registered trademark of IWATSU ELECTRIC CO., LTD.
