Technical Information
DP7XX Series PLUS+1® Mobile Machine Displays
L1315553
• Rev DA • Dec 2013
11
Encoder
The encoder input is only suitable for user interface functions, such as, navigating in menus and
adjusting values because there is no guarantee that all pulses are detected and the detected
direction can be false. The rate of pulses should be kept at a few tens per second to minimize the loss
of detected position changes.
The encoder function samples the A and B signals from the encoder and increments or decrements
the counter according to the phase sequence. The counter is incremented/decremented on every low
to high and high to low edge of the A signal. Some encoders with detents give a complete pulse
between detents and the counter will be incremented/decremented by two for every detent. The
counter is incremented when the A signal is the leading phase and decremented in the opposite case.
Outputs
Digital Output
Only to be used for buzzer output.
USB
USB Input/Output
Description
Unit
Minimum
Maximum
Typical
Comment
2.0 full speed
Mbit/s
—
—
12
—
Vbus input voltage
V
—
—
> 4.4
—
Vbus input resistance
kΩ
—
—
70
Vbus < 5.25 V
Short circuit protection
(No damage)
V
0
36
—
—
Vbus output voltage
V
4.75
5.25
—
—
Vbus output current
A
—
—
0.5
—
Vbus short current
A
—
1.1
—
—
The DP7XX series displays all have USB ports that support memory sticks and computer connection.
The DP7XX functions as a device when connected to a computer for diagnosis purposes or software
download. The DP7XX functions as a host when a standard USB memory stick is connected so
log-data can be transferred. There is also an option for a front type-A USB connector. The front
connector is USB host, the rear connector is USB host and device. You can only use one host
connection at a time (either front or rear), but you can use front host and rear device at the same time.
Other than supporting memory sticks and computer connection, the DP7XX series display USB port
does not support any other standard computer peripherals.
Video
Video Output
Description
Unit
Minimum
Maximum
Typical
Comment
Short circuit protection
V
0
36
—
—
12 V output voltage
(9 V < Ubat < 70 V)
V
11.5
12.5
12
—
12 V output current
A
—
—
0.5
Vbus < 5.25 V
24 V output voltage
(9 V < Ubat < 70 V)
V
23
24
24
—
24 V output current
A
—
0.5
—
—
Video inputs
—
—
—
—
Both NTSC and PAL support