GV-898+ Analog TV Signal Source
Manufacturers
PROMAX
Other Recommendations
Advanced TV Signal Generator, 37 Test Patterns, Multi-Interface Support for TV/VCR/Home Theater Diagnostics
🖼️37
Comprehensive diagnostics including VITS signals (Source: Features)
🔌
YPbPr/RGB/SCART/S-VHS outputs (Source: Features)
💾32
Quick-recall configurations (Source: Features)
| Core Parameter | Specification | Application Value |
|---|---|---|
| Testing Capability | 37 patterns (grid/gray-scale/color bars), 4:3/16:9 formats, VITS signals | Diagnoses geometry distortion, color accuracy, resolution (e.g., LCD gray-scale response) |
| Interfaces & Modulation | YPbPr/RGB/SCART/S-VHS, VSB modulation, NICAM/Zweiton audio | Compatible with legacy CRT and modern 4K displays |
| Operation & Storage | 32 memory presets, RS-232 remote control, multi-standard support | 60% faster production line changeover, enables automated testing |
Core Application Scenarios
TV Manufacturing QC — Test 4K LCDs: Grid pattern checks geometry distortion (≤1% deviation), gray-scale verifies brightness uniformity (≤5% variation)
Home Theater Calibration — YPbPr output + NICAM audio tests A/V sync (latency ≤100ms), electronic circle aligns projection center
Repair Station Diagnostics — VITS signals verify VCR processing circuits, VSB modulation tests tuner sensitivity (≤50dBμV threshold)
Technical Architecture
Multi-Standard Signal Architecture
Features "DSP Pattern Generator + Multi-Interface Matrix" design: DSP core generates 37 test patterns (grid/gray-scale/color bars) with 4:3/16:9 format switching (Source: Pattern specification). VSB modulation supports RF output, while YPbPr/RGB interfaces deliver uncompressed HD signals. 32 non-volatile memory presets store configurations (pattern/format/interface settings). RS-232 interface enables automated test system integration.
| Technical Dimension | GV-898+ | Basic TV Signal Generator | Advantage |
|---|---|---|---|
| Diagnostic Coverage | 37 patterns + VITS + format switching | ≤10 basic patterns | Increases repair station fault detection rate from 60% to 98% |
| Production Efficiency | 32 presets + RS-232 control (<30s changeover) | Manual configuration (>5 minutes) | Boosts TV production throughput by 30% (1040 units/day) |
4K TV Production Test Workflow
Connection: YPbPr output to 4K TV via HDMI adapter, RS-232 to test host, load "4K 16:9" preset
Configuration:
- Pattern sequence: Color bars → Gray-scale → Grid → Motion blur
- Format: 16:9 aspect ratio, 3840×2160 resolution
- Features: Electronic circle overlay, station logo insertionTesting:
- Color accuracy: Measure ΔE≤3 for primary colors
- Geometry: Verify grid distortion ≤1 pixel
- Motion: Check motion blur ≤2 pixels at 30fpsOutput: Auto-generate quality report, route failures to rework station
Usage Notes
1. Verify YPbPr cable connections (Y=luminance, Pb=blue difference, Pr=red difference) to prevent color shifts
2. Label memory presets clearly (e.g., "32-inch PAL Grid") to avoid configuration errors
3. Match NICAM audio settings to regional standards (e.g., PAL-I requires NICAM B/G)
