View source for Mitsubishi C-3419

{{CRT model
|brand=Mitsubishi
|model_code=C-3419
|variants=N
|release_year=1983
|crt_type=Computer monitor
|form_factor=Standard
|screen_size_in=13
|aspect_ratio=4:3
|tvl=576
|mask_type=Shadow mask
|gun_type=In-line
|visible_w=270
|visible_h=195
|visible_diag=13.1
|h_scan_min=15.5
|h_scan_max=24
|v_scan_min=40
|v_scan_max=90
|frequency=50Hz,60Hz
|power_max=180
}}

The '''Mitsubishi C-3419''' is a 13-inch professional color display monitor manufactured by Mitsubishi Electric for use with the Advanced Electronics Design (AED) 512 and 767 Color Graphics Terminals. It features an in-line gun shadow mask CRT with self-convergence technology.

== Variants ==
* '''C-3419N''' — NTSC/North American version (AC120V, 60Hz only)

== Features ==
The C-3419 is designed for high-resolution graphics display, capable of showing up to 2000 characters or 441,600 pixels (768×575 maximum resolution). Key features include:

* Self-convergence design requiring no electrical convergence adjustments
* Switchable 75Ω / high-impedance input termination for daisy-chaining multiple monitors
* Loop-through outputs for daisy-chaining to additional monitors
* Separate RGB and sync termination switches
* Anti-spark circuit protection
* Stable convergence with less than 0.5mm deviation in the center and 0.8mm elsewhere
* Video amplifier frequency response of ±3dB from 50Hz to 20MHz
* Rise and fall times shorter than 20ns
* Warm-up time of 20 minutes maximum

The monitor accepts RGBHV via 5 BNC connectors, supporting either composite sync (CSYNC) on the HD input alone, or separate horizontal and vertical sync using both HD and VD inputs.

== Specifications ==
* '''Video input levels:''' 0.7–1.5 Vp-p for RGB, 1.0–5.0 Vp-p for sync
* '''Blanking time:''' Horizontal <9.5μs, Vertical <0.8μs
* '''Raster size regulation:''' <4mm change with 0–200μA beam current
* '''Linearity:''' Better than ±7%
* '''Raster distortion:''' Less than 2% of raster height

== TVL derivation ==
The 576 TVL figure is derived from the AED 512/767 graphics terminals that typically drove these monitors. Per the AED users manual, the highest resolution raster mode is 768×575 pixels. Since TVL measures horizontal resolution across picture height, the pixel count is adjusted for 4:3 aspect ratio:

: 768 pixels × (3 ÷ 4) = '''576 TVL''' (addressable)

'''Could the monitor resolve more with a different source?'''

The monitor's video bandwidth is specified at 20 MHz (±3dB). This represents how fast the video amplifier can switch the electron beam intensity. At the maximum 24 kHz horizontal scan rate, each line is ~41.7 µs, with ~32 µs of active video (after blanking). A rough estimate:

: 32 µs × 20 MHz = ~640 cycles (line pairs) per line

Applying real-world factors (the -3dB spec means signal is already attenuated ~30% at that frequency), practical resolution from the electronics might be 500–600 pixels horizontally — which aligns reasonably well with the 768-pixel AED mode.

'''Unknowns:'''

The shadow mask pitch is not specified in the AED manual. Without knowing the phosphor dot spacing, we cannot determine whether the video amplifier or the shadow mask is the true resolution bottleneck. The 576 TVL figure should be considered an estimate based on the AED system configuration, not a definitive monitor specification.

{{CRT voltage range
|voltage_min=100
|voltage_max=120
}}
{{CRT voltage range
|voltage_min=200
|voltage_max=240
}}
{{CRT input
|label=RGB In
|signal=RGBHV
|connector=BNC
|count=1
|audio=None
|sync=HSYNC+VSYNC
|location=rear
|notes=5 BNC connectors (R, G, B, HD, VD). HD input accepts composite sync (CSYNC) or horizontal sync; VD accepts vertical sync. Use HD alone for CSYNC operation.
}}
{{CRT output
|label=RGB Loop
|output_type=Video
|signal=RGBHV
|connector=BNC
|count=1
|location=rear
|notes=5 BNC loop-through outputs for daisy-chaining additional monitors. Set termination switches to HI when looping through.
}}

[[Category:CRT models]]
[[Category:Mitsubishi]]
[[Category:Computer monitors]]