VGA, 640 x 480
31.469
59.940
25.2
-/-
VGA, 640 x 480
37.500
75.000
31.5
-/-
VESA, 800 x 600
37.879
60.317
40.0
+/+
VESA, 800 x 600
46.875
75.000
49.5
+/+
VESA, 1024 x 768
48.363
60.004
65.0
-/-
VESA, 1024 x 768
60.023
75.029
78.8
+/+
VESA. 1152 x 864
67.500
75.000
108.0
+/+
VESA, 1280 x 1024
64.000
60.000
108.0
+/+
VESA, 1280 x 1024
79.976
75.025
135.0
+/+
VESA, 1920 x 1080
67.500
60.000
148.5
+/+
Electrical
Model
ST2420L/ST2421L
Video input signals
Analog RGB, 0.7 Volts +/- 5%, positive polarity at 75 ohm input impedance
Digital DVI-D TMDS, 600mV for each differential line, positive polarity at 50 ohm input
impedance
HDMI, 600mV for each differential line, 100 ohm input impedance per differential pair
Synchronization input signals
Separate horizontal and vertical synchronizations, polarity-free TTL level, SOG
(Composite SYNC on green)
AC input voltage/frequency/current
100 to 240 VAC/50 or 60 Hz + 3 Hz/2.0A (Max.)
Inrush iso surge current
120 V: 30 A (Max.)
240 V: 60 A (Max.)
Physical Characteristics
Model
ST2420L/ST2421L
Connector type
D-sub: Blue connector
DVI-D: White connector
HDMI
Signal cable type
D-sub: Detachable, Analog, 15 pin, shipped attached to the monitor
DVI-D
HDMI
