--- type: product schema_version: 1 stock_number: "67949-16" canonical_url: "https://www.artisantg.com/TestMeasurement/67949-16/Curtiss-Wright-VMETRO-Ultraview-VBAT-PB-321-C-Piggyback-Module" json_url: "https://www.artisantg.com/TestMeasurement/67949-16/Curtiss-Wright-VMETRO-Ultraview-VBAT-PB-321-C-Piggyback-Module.json" generated_at: "2026-11-07T06:50:59.729Z" last_updated: "2026-07-16T22:40:12.240-05:00" --- # Curtiss-Wright / VMETRO Ultraview VBAT / PB-321-C Piggyback Module _Summary and Categories are this item's record. The description sections and FAQ are machine-assisted and can contain errors; where they disagree with the record, the record is correct, and where description sections disagree with each other, Details wins._ ## Summary - Manufacturer: VMETRO - Model: Ultraview VBAT / PB-321-C - Condition: Used and in Excellent Condition - Price: Quote only - Availability: In stock - Warranty: 1-Year Warranty with 30-Day Return Guarantee - ITAR restricted: No - Shipping weight: 10 lb - Shipping dimensions: 14X14X14 in ## Categories - Test Equipment > Electrical Test > Bus Analyzers (primary) - Military and Embedded Equipment > Embedded & Industrial > VXI & VME > VME - Military and Embedded Equipment > Embedded & Industrial > VXI & VME > B-Size ## Details The VBAT-PB-321-C is a piggyback module that automatically monitors all VMEbus traffic, screening the bus for violations of the VME specification. The board contains rule-based parallel trigger elements that continuously, and simultaneously, detect bus timing violations, like address not stable while AS* asserted, bus granted to two masters, etc. Violations are directed to the trigger circuitry and trace memory of the VBT-325. ## Images - -