GPIB-232CT-A
May 15, 2026

GPIB-232CT-A

I. Basic Specification Full Name: GPIB-232CT-A, RS-232 to IEEE 488 Controller/Converter Function: Converts serial port (RS-232) devices into a complete GPIB controller to control GPIB instruments; also enables serial port instruments to be connected to the GPIB system. Comparison: CT-A: Equipped with complete GPIB controller functions (can be the controller / speaker / listener) CV-A: Only protocol conversion, without controller capability Part number (commonly used): AC version: 776668-01 (100–120 VAC), 776668-31 (220–240 VAC) DC version: 776899-01 (5–13 VDC)

Description

I. Basic Specification

Full Name: GPIB-232CT-A, RS-232 to IEEE 488 Controller/Converter

Function: Converts serial port (RS-232) devices into a complete GPIB controller to control GPIB instruments; also enables serial port instruments to be connected to the GPIB system. Comparison:

CT-A: Equipped with complete GPIB controller functions (can be the controller / speaker / listener)

CV-A: Only protocol conversion, without controller capability

Part number (commonly used):

AC version: 776668-01 (100–120 VAC), 776668-31 (220–240 VAC)

DC version: 776899-01 (5–13 VDC)

II. Core Specifications

1) Interfaces

GPIB: 24-pin IEEE 488 standard interface

Serial: 9-pin RS-232 (D-SUB female connector)

2) Serial Port Parameters

Baud Rate: Up to 38.4 kbps

Data Bits: 7/8; Stop Bits: 1/2; Parity: None / Odd / Even

Buffer: 256 KB RAM buffer

3) GPIB Capabilities

Compatibility: IEEE 488.1 / 488.2

Bus Capacity: Up to 14 GPIB instruments

Functions: Controller, Speaker, Listener, SRQ Handling, Remote / Local Control

4) Electrical and Power

AC Version: 100–120 VAC or 220–240 VAC, 50/60 Hz, 5 VA

DC Version: 5–13 VDC, 700 mA

5) Physical and Environmental Size:

AC: 76 × 44 × 118 mm (3.0 × 1.7 × 4.7 in)

DC: 76 × 28 × 118 mm (3.0 × 1.1 × 4.7 in)

Weight: Approximately 340 g (12 oz)

Operating temperature: 0 ℃ ~ +55 ℃

6) Software / Driver

Driver: NI-488.2 (DOS/Win3.x); Modern systems mostly use direct serial port commands for control

Support: LabVIEW, LabWindows/CVI, SCPI command transmission

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