Manual
Table Of Contents
- Introduction
- Getting Started
- VCA Feature Packages
- Accessing VCA Configuration
- Activation
- Obtaining an Activation Code
- Applying an Activation Code to a Unit
- Switching VCA On and Off
- Enabling Metadata Streaming
- Configuration of Zones and Rules
- Customizing the Tracking Display
- Creating Detection Zones and Lines
- Creating a Zone or Line
- Non-Detection Zones
- Detection Rules
- Object Presence
- Object Direction
- Object Enter and Exit
- Object Appear and Disappear
- Object Dwell
- Object Stopped
- Object Class
- Object Tailgating
- Object Speed
- Object Color Filter
- Counting Line
- Camera Calibration
- Calibration Page Elements
- Calibrating a Camera
- Advanced Calibration Parameters
- Vertical Field of View
- Measurement Units
- Object Classification
- Logical Rules
- Adding and Removing Logical Rules
- Editing Logical Rule Clauses
- Editing Logical Rule Actions
- Clause Types
- Action Types
- Counters
- Creating Counters
- Assigning Rules to Counters
- Counter Storage and Reporting
- Counter Database Service
- Counter Reporting Service
- Email Notification
- Enable Email Notification
- Adding a New Email Notification Recipient
- Email Configuration
- Name
- Description
- Email Address
- Schedule Configuration
- Current Device Time
- Enable Hourly Report
- Trigger Time
- Weekday
- Enable Daily Report
- Trigger Time
- Weekday
- Enable Weekly Report
- Trigger Day
- Trigger Time
- Enable Monthly Report
- Trigger Day
- Trigger Time
- Report Configuration
- Time
- Report All Data
- Time Range
- Counter ID
- Table (Sampling)
- Sorting Order
- Value Type
- Format
- Send Test Report
- Importing Data into Microsoft Excel
- Other Reports
- Heatmap Reporting
- Events Reporting
- Tracks Reporting
- Tamper Detection
- Scene Change Detection
- Burnt-in Annotation
- PTZ Profiles
- PTZ Control Element
- Configure a PTZ Preset
- Create VCA Profile
- Delete VCA Profile
- Disable PTZ Preset
- PTZ Configuration and Auto-Tracking
- PTZ General Configuration
- PTZ Auto-tracking Configuration
- Importing & Exporting VCA Configuration
- Generating External Event Notifications
- Advanced VCA Settings
- Alarm Holdoff Time
- Measurement Units
- Metadata Format
- Event
- Object
- Counting
- Do not send empty metadata packets
- Blob
- Tamper Diagnostics
- Counting Line Diagnostics
- Scene Change Diagnostics
- More Information
- Stationary Object Hold-on Time
- Tracking Options
- Minimum Tracked Object Size
- Display Options
- Minimum Alarm Object Display Time
- Minimum Object Display Time
- Detection Point of Tracked objects
- People Tracker
05-2018-A
Ganz GXi Series VCA Interface Manual V3.05.31.18
59 | P a g e
Was Clause
The 'was' clause is triggered if the input clause was triggered at the specified time in the past. This has
the effect of applying a time delay to its input clause.
The example below shows the effect of applying a 'was' clause to the output of a presence rule. The
logical rule is triggered if the presence rule was triggered five seconds earlier.
Previous Clause
The 'previous' clause will trigger if its input clause is triggered at between the current time and a fixed
offset in the past. The result is that short events will be extended by the specified time interval.
The following example shows the effect of using a 'previous' clause with a five second interval to process
the output of a presence rule. The input event lasts for two seconds, so the resulting logical rule event
lasts for seven seconds.