Description
The GPIB-120B, specified under part numbers 779651-01, 779651-04, 779651-06, and 779651-07, falls under the GPIB category. This model is designed to be fully compatible with the IEEE 488.1 and IEEE 488.2 standards, ensuring a wide range of interoperability with GPIB-compliant devices.
One of the key features of the GPIB-120B is its ability to expand the device limit on the GPIB bus to up to 28 devices. This expansion capability is particularly beneficial for complex setups requiring multiple instruments. Additionally, it boasts an isolation voltage of up to 2,500 VDC (non-continuous), providing an extra layer of protection against electrical interference and damage.
The GPIB-120B supports bidirectional expansion, allowing it to support talkers, listeners, and controllers on either side of the bus. This flexibility ensures that the GPIB-120B can adapt to a variety of communication roles within the GPIB network. Furthermore, it employs technology designed to eliminate induced common-mode and ground loop noise, enhancing the reliability and quality of data transmission.
With the capability to support up to 14 additional devices, the GPIB-120B enhances the scalability of GPIB networks. It operates in a manner that is transparent to GPIB control and communication programs, ensuring seamless integration into existing setups. The device offers both buffered mode and unbuffered mode (default) data transfer modes, catering to different requirements for data throughput and latency.
The GPIB-120B is equipped with eight digital input/output lines (DIO1, DIO2, DIO3, DIO4, DIO5, DIO6, DIO7, DIO8) and three hardware handshake lines, providing a comprehensive set of connections for managing data flow and device coordination on the GPIB bus.
| Specification | Description |
|---|---|
| Part Numbers | 779651-01, 779651-04, 779651-06, 779651-07 |
| Category | GPIB |
| Model | GPIB-120B |
| Compatibility | IEEE 488.1 and IEEE 488.2 standards |
| Device Limit Expansion | Up to 28 devices on the GPIB bus |
| Isolation Voltage | Up to 2,500 VDC (non-continuous) |
| Bidirectional Expansion | Supports talkers, listeners, and controllers on either side |
| Noise Elimination | Eliminates induced common-mode and ground loop noise |
| Additional Devices Supported | Up to 14 additional devices |
| Operation Mode | Transparent to GPIB control and communication programs |
| Data Transfer Modes | Buffered mode and unbuffered mode (default) |
| Data Lines | DIO1, DIO2, DIO3, DIO4, DIO5, DIO6, DIO7, DIO8 |
| Hardware Handshake Lines | Three lines |
Question 1: What IEEE standards is the GPIB-120B compatible with?
Answer 1: IEEE 488.1 and 488.2
Question 2: How many devices can the GPIB-120B support?
Answer 2: Up to 28 devices
Question 3: What is the isolation voltage of the GPIB-120B?
Answer 3: Up to 2,500 VDC
Question 4: Can the GPIB-120B support bidirectional expansion?
Answer 4: Yes, it supports talkers, listeners, and controllers.
Question 5: How many DIO lines does the GPIB-120B have?
Answer 5: Eight DIO lines (DIO1-DIO8)




