ZWorld PK2100 Series, Руководство пользователя

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PK2100 Series
Z-World 530-757-3737 12
J7
Connect
2
-
3
for voltage output on the
DAC
channel (factory
setting). Connect
1
-
2
for
20
mA current output.
J8 1
-
2
Enable switching power supply
3
-
4
Connects timer output
T0
to processor
/INT2
.
Can generate periodic interrupts.
5
-
6
Connects universal input
1
to processor
/INT0
.
Not recommended.
7
-
8
Connect processor
I/O CKA1
to digital input 6.
9
-
10
Connect processor
I/O CKA1
to digital input 7.
11
-
12
Processor-readable jumper. By convention, install
whenever
13
-
14
is installed.
13
-
14
Install jumper to enable watchdog timer.
J3 1
-
2
Protect
EEPROM
against writes at addresses
256
–
511
.
This is the factory setting.
2
-
3
Allow
EEPROM
writes at addresses
256
–
511
.
J9 1
-
2
The comparators used for the universal inputs are
connected to the voltage divider
RR
which has a
value of
1
.
6
volts. This causes the universal inputs to
have a threshold fixed at this value.
2
-
3
Factory setting, where the internal
DAC
is connected
to the comparators used for the universal inputs.
J11
1-2 Connect to enable
CTS
on the
RS232
port (
0
).
2-3 Connect to use the
CTS
line as a board reset line.
CTS
high will reset the
PK2100
board.
Board Dimensions
The drawing below shows board dimensions, mounting hole lo-
cations and sizes, all the jumpers and headers, pin
1
positions
for important headers, and the positions of resistors that affect
the universal inputs and the high-gain input. Mounting holes
are (
0
.
225
,
0
.
7
) from the extreme corners of the board. Resistors
R5
,
R11
, and resistor pack
RP5
affect the high-gain channel. Re-
sistor
R28
(
5
.
1
k
Ω
) is part of a resistor divider that gives the op-
tional fixed hardware reference voltage for the universal inputs.
Maximum height of components above the board is
0
.
65
″
ap-
proximately
.
Overall height is
0
.
78
″
approximately.
0.7 typ
0.91 typ
~0.
6
~0.
7
0.4 typ
6.82
0.225 typ
4.5
5.5
6.53
0.53
1.7
7
J11
J3
J1
J7
LED
JP1
H8
SW1
J8
to keypad (flex cable)
P2
P1
H11
K1
J9
JP2
JP3
to LCD
H7
H9
H1
J4
H4
H6
H5
(0.53, 2.66)
(1.19, 4.13)
2.73, 0.68)
0.17 dia mounting holes, 4x
0.25 dia
0.16 dia
“Phone
Jack”
U27
R28
R11
R5
RP5
Figure 5. Board Dimensions