Guwei Electronics has launched a new 5 1/2 dual display digital electric meter - GDM-8351, to replace the original model GDM-8251A in the same class. The new electricity meter also uses VFD dual display screens, maximum display of 120000 digits, basic accuracy of 0.02% DC voltage, and USB/RS232C communication interface, providing users with accurate measurement functions, clear numerical observations, and convenient connection to personal computers.

In addition to basic measurement items such as AC/DC voltage, AC/DC current, 2-wire/4-wire resistance, temperature measurement, short-circuit buzzing, and diode testing functions, this new meter also has the ability to measure capacitance. In addition, it also provides various auxiliary functions, such as maximum/minimum value dB、dBm、 Compare, read value retention, arithmetic (MX+B, 1/X,%), etc., to assist in meeting the measurement application needs in process testing, teaching experiments, and inspection scenarios.

In addition, in terms of external control, the pins of Digital I/O not only provide signal outputs commonly used for comparison functions, but also allow users to define their own pin signal outputs. In custom mode, users can treat this I/O as a simple digital hardware and achieve external control needs through signals from each pin, saving users the trouble of making hardware circuits.

Finally, in terms of remote control and data acquisition, considering user habits and the universality of system interfaces, the meter provides standard RS-232C and USB interfaces, which can be used to write control programs and read measurement results; Especially on the USB interface, users can choose whether the interface is in USBCDC or USBTMC mode by themselves; When using USBTMC mode, users can control USB interface instruments like GPIB interface instruments without the need for relatively expensive GPIB cables.

Dual measurement/dual display

Similar to the fixed latitude 6 1/2 and 5 1/2 digit meters, GDM-8351 also uses VFD dual display screens to support the combination of measurement items, such as monitoring the DC voltage and current presented by components in the test circuit or measuring DC voltage with AC components... The results obtained from one-time measurements can be presented separately and simultaneously on individual display screens. In addition to saving users' time in measurement, it also eliminates the trouble of switching displays in observation.

Optional measurement speed

GDM-8351 also has the fastest measurement speed among its peers and offers 3 file speed options - slow/medium/fast; In fast mode, the measurement of DC voltage can reach 320 readings per second; The choice of this speed helps users maximize the benefits of their measurements.

Diverse measurement items and functions

GDM-8351 provides a relatively diverse range of measurement items and functions compared to products of the same level, including 12 main measurement items such as AC voltage/current, DC voltage/current, AC+DC voltage/current, 2-wire/4-wire resistance, temperature, frequency, diode, and short-circuit buzzer testing; Even equipped with the ability to measure capacitance. In addition, it also provides various auxiliary functions to match the main measurement items, such as maximum/minimum value, read value retention, relative value dB、dBm、 Arithmetic (MX+B, 1/X,%) and comparison functions are used to meet the needs of users in handling daily work.

Convenient Digital I/O functionality

Another difference between GDM-8251A and GDM-8351 is that the Digital I/O of GDM-8351 can provide two different modes of functionality, general mode and custom mode. In normal mode, Digital I/O outputs Hi Fail, Lo Fail, Pass, and EOM (End of Measurement) signals based on the comparison function results, while providing external trigger inputs. In the custom mode, users can define the output states of the four pins (SET1~SET4) and perform external control accordingly.

Free software - remote control and data capture

In addition, for the convenience of users to immediately retrieve measurement readings through the USB communication interface, GDM-8351 also provides a free software - Excel ADDins. After installation and execution of the software, a macro tool will be established in Microsoft Excel to allow users to directly control the settings of GDM-8351, record measurement results, and synchronize the recorded data into graphical display through Excel drawing function. This not only saves program development time but also avoids compatibility between programs in different languages.

Instruction compatibility

Finally, for users who previously used GDM-8251A, GDM-8351 also provides fully compatible commands. Users only need to make simple settings on GDM-8351 to directly replace the machine, without worrying about the cost of modifying existing programs or delaying production time.