1. Product Introduction

2. Electrical & Interface Specification

• Interface Definition: One end is proprietary SUN SCSI male connector (matches WEStation mainboard onboard SCSI socket), opposite end is customized 25PIN serial plug compatible with SUNMD/SUNID dual-protocol trackball PCB port (fits all 3A98826H01/H02/H06 trackball terminals).

• Cable Core: Multi-shielded twisted pair internal wiring with double-layer aluminum foil + braided copper shielding, effective anti-EMI/RFI interference from cabinet power modules, relay coils and field control signal noise in DCS control room environment.

• Rated Electrical: Signal operating voltage 5VDC, rated transmission impedance matched for SUN proprietary serial-SCSI hybrid bus; withstand voltage ≥500V AC insulation test, leakage current below industrial standard threshold.

• Length Standard: Fixed factory calibrated length exclusive for H01 version, standardized routing size for built-in wiring inside WEStation console cabinet without excess cable modification.

3. Mechanical & Environmental Parameters

• Outer Jacket: Industrial grade black flexible PVC outer sheath, oil-resistant, abrasion-proof, anti-aging for long-term 24/7 continuous cabinet internal service.

• Working Ambient: Operating temperature: 0℃ ~ +55℃; storage temperature: -40℃ ~ +85℃; applicable relative humidity: 5%~95% RH non-condensing, compliant with CE industrial wiring component specification.

• Termination Treatment: Pre-crimped factory molded plug terminals with strain relief structure to prevent core wire breakage from frequent maintenance plug/unplug operation.

Distinction of 3A98833 Series Models

• 3A98833H01: Standard fixed-length SCSI-trackball cable (basic console wiring)

• 3A98833H03: Medium extended length variant for remote cabinet mounting

• 3A98833H12/H23: Long customized length cables for split-type separated control desk layout

4. Core Application Function

1. Exclusive signal transmission medium to realize data communication between WEStation host mainboard and 3A98826 series embedded trackball, transferring cursor position & left/right button trigger signals for WDPF HMI screen operation.

2. Cooperate with original membrane keyboard to complete DCS equipment parameter setting, alarm acknowledgement, process screen switching and system configuration download in power plant central control room.

3. Mandatory spare replacement part for WEStation workstation overhaul, trackball retrofit and on-site fault troubleshooting of legacy Westinghouse WDPF distributed control system.

5. Supply & Delivery Details

• Available Goods: Pre-tested refurbished cables and original used pulled spares with quality warranty; brand new original factory stock is globally scarce.

• Standard Lead Time: 2~4 working weeks; urgent expedited shipment available upon emergency maintenance order.

• Global Logistics: Worldwide delivery via DHL/UPS/FedEx; professional cable repair service for damaged broken 3A98833H01 units is supported.