DEWE-1201 - All-In-One standard instrument
Rugged small-size portable instrument
16 MDAQ input channels
(voltage, IEPE
®
, bridge or strain)
2 counter input (encoder), CAN-bus option
EPAD interface for adding quasi-static
thermocouple or voltage channels
Local data storage up to 40 MB/s
System specifications
DEWE-1201
Main System
Main System
Channel 0 to 7
Channel 8 to 15
Power supply:
Operating temperature:
Storage temperature:
Humidity (operating):
Vibration test**
EN 60068-2-6
(exceeds MIL-STD 810F
514.5 procedure I)
Vibration test**
EN 60721-3-2
Class 2M2
Shocktests**
EN 60068-2-27
(Exceeds MIL-STD 810F
516.5 procedure I)
250 W 6 to 30 V
DC
ATX power supply (8 V
DC
0 °C to +50 °C
-20 °C to +70°C
10 % to 80 %, non condensing
5 % to 95 %, rel. humidity
Shape
Frequency range
Acceleration
Sweep rate
Duration
Test in 3 directions
Shape
Frequency range
Power spectral density
Duration
Shape
Acceleration amplitude
Duration
startup voltage)*; external AC power supply included
Test in 3 axis, 3 shocks in each axis and direction
Dimensions: (W x D x H): 340 x 253 x 108.4 mm (13.4 x 10 x 4.3 in.)
Weight: typ. 5.5 kg (12.1 lbs), depending on confi guration
*) Further information see chapter ‚DIP-switch operation‘.
**) tested with SSD disc
Sine
10 - 150 Hz
2 g
1 oct./min.
20 Cycles
Random
10 - 200 Hz
1 m/s² / Hz from 10 – 200 Hz
30 Minutes per axis
Half-sine
15 g
11 ms
DE-M091001E • DEWE-1201 • Technical Reference Manual • Printing version 1.0.1 • December 10, 2009
17
Main System
Dimensions*
180
* Dimensions in mm
(1 inch = 25.4 mm)
318
340
8,5
18
Main System
DEWE-1201 at a glance
Typical DEWE-1201 front view
3
1
2
4 5 6
Typical DEWE-1201 side view
7 8 9
11
10
10
1 Built in TFT display
2 Keyboard
3 Fan-outlet-casing
4 Power-on switch
5 Ground connector
6 MDAQ panel
7 Digital I/O connector
(B0_Digital I/O)
8 CAN interface connector
9 Expansion interface connector
(Expansion E0)
10 Optional counter inputs
11 EPAD connector
12 WLAN antenna
13 Power supply for accessories
(12 V
DC
/ 1.5 A)
14 Power supply input connector
15 RS-232 interface connector
16 VGA connector
17 PS/2 keyboard connector
18 USB interface connector
19 PS/2 mouse connector
20 IEEE-1394 (FireWire
®
) connector
21 Ethernet LAN connector
22 Audio device
(LINE IN, MIC, LINE OUT)
1920
121314 15 16 17 18 21 22
Note: The location of the connectors might vary from system to system and depends on configuration
DE-M091001E • DEWE-1201 • Technical Reference Manual • Printing version 1.0.1 • December 10, 2009
19
Main System
4 Power-on switch
The power-on switch has to be used to switch on the system.
5 Ground connector
For some kind of measurements, it’s necessary to give the system an additional ground connection.
6 MDAQ panel
For details see chapter 'MDAQ series amplifiers overview'.
7 Digital I/O connector
This connector supports digital input and output lines of the built-in DEWE-ORION series board. If this board does not support digital I/O’s, the connector is not available.
Digital
Input
Counter
Input
Counter
Input
Digital
Input
Bx_DI 8
Bx_DI 9
Bx_DI 10
Bx_DI 11
Bx_DI 12
Bx_DI 13
Bx_DI 14
Bx_DI 15
-
-
-
Bx_DI 0
Bx_DI 1
Bx-DI 2
-
Bx_DI 3
-
-
-
Bx_DO 0
Bx_DO 1
Bx_DO 2
Bx_DO 3
Bx_DO 4
Bx_DO 5
Bx_DO 6
Bx_DO 7
EXT_CLK
RS-485A
EXT_Trigger
Source Bx_CNT0
Gate Bx_CNT0
EXT_CLK2
Aux Bx_CNT0
Source Bx_CNT1
EXT_CLK1
+5 DV
+5 DV
13
14
15
16
9
10
11
12
17
18
19
5
6
7
8
1
2
3
4
37-pin SUB-D connector
32
33
34
35
28
29
30
31
36
37
24
25
26
27
20
21
22
23
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
RS-485B
DGND
Gate Bx_CNT1
-
Aux Bx_CNT1.
-
RES.*
DGND
DGND -
-
-
-
-
Bx_DI 4
Bx_DI 5
Bx_DI 6
-
Bx_DI 7
-
-
-
-
-
-
-
-
!
Note: Only available for standard systems using ORION-xxxx cards!
8 CAN connector (optional)
This connector supports the CAN signals of the built-in A/D board. If this board does not support CAN signals, the connector is not available.
CAN 0: CAN 1:
5 4 3 2 1
9 8 7 6
Pin assignment
1: +5 V
2: CAN0_L
3: GND
4: n.c.
5: n.c.
6: GND
7: CAN0_H
8: n.c.
9: +12 V
5 4 3 2 1
9 8 7 6
Pin assignment
1: +5 V
2: CAN1_L
3: GND
4: n.c.
5: n.c.
6: GND
7: CAN1_H
8: n.c.
9: +12 V
20
Main System
9 Expansion interface connector (in conjunction with DEWE-ORION-xxxx boards)
The ORION expansion interface connector is installed in case the system is equipped with a 32 channel
ORION card or a ORION card with counter expansion.
AGND
AGND
AISENSE1
AGND
Bx_DI_8
Bx_DI_9
Bx_DI_10
Bx_DI_11
Bx_DI_12
Bx_DI_13
Bx_DI_14
Bx_DI_15
+5DV
DGND
DGND
+5DV
DGND
DGND
+15AV
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
AISENSE2
AGND
AGND
AGND
AGND
AGND
59
60
61
62
63
64
65
66
67
68
51
52
53
54
55
56
57
58
43
44
45
46
47
48
49
50
35
36
37
38
39
40
41
42
25
26
27
28
29
30
31
32
33
34
21
22
23
24
17
18
19
20
9
10
11
12
13
14
15
16
5
6
7
8
1
2
3
4
-15AV
AGND
AGND
CH15+
CH14+
CH13+
CH12+
CH11+
CH10+
CH9+
CH8+
CH7+
CH6+
CH5+
CH4+
CH3+
CH2+
CH1+
CH0+
AGND
Bx_DI_0
Bx_DI_1
Bx_DI_2
Bx_DI_3
Bx_DI_4
Bx_DI_5
RS-485A
RS-485B
Bx_DI_6
Bx_DI_7
EXT_CLK_OUT
EXT_Trigger_OUT
EXT_CLK1_OUT
EXT_CLK2_OUT
ORION card with 32 analog inputs
(ORION-3216-10x, ORION-3222-10x)
68-pin Amplimite series
(AMP: 174339-5) SCSI II
Ex_DI 10
Ex_DI 11
Ex_DI 12
Ex_DI 13
Ex_DI 17
Ex_DI 18
-
-
Ex_DI 21
-
Ex_DI 22
-
Ex_DI 25
Ex_DI 26
Ex_DI 29
-
Ex_DI 30
-
Ex_DI 1
-
Ex_DI 2
-
Ex_DI 5
Ex_DI 6
-
-
-
-
-
-
-
-
-
GND
GND
RS-485A
RS-485B
GND
Aux_Ex_CNT0
GND
GND
GND
-
GND
-
GND
GND
-
-
Gate Ex_CNT7
Source Ex_CNT7
Aux Ex_CNT6
-
GND
GND
Aux Ex_CNT5
Gate Ex_CNT5
GND
Aux Ex_CNT4
Gate Ex_CNT4
GND
Aux Ex_CNT3
Gate Ex_CNT3
GND
Aux Ex_CNT2
Gate Ex_CNT2
GND
63
64
65
66
59
60
61
62
67
68
55
56
57
58
51
52
53
54
47
48
49
50
43
44
45
46
39
40
41
42
35
36
37
38
29
30
31
32
25
26
27
28
33
34
21
22
23
24
17
18
19
20
13
14
15
16
9
10
11
12
5
6
7
8
1
2
3
4
+5 V
Source Ex_CNT0
Gate Ex_CNT0
Reserved
Ex_Out 0
Aux Ex_CNT1
Source Ex_CNT1
Gate Ex_CNT1
-
Ex_Out 1
-
GND
-
-
-
GND
Aux Ex_CNT7
GND
GND
GND
Gate Ex_CNT6
Source Ex_CNT6
-
GND
-
Source Ex_CNT5
GND
Source Ex_CNT4
-
GND
-
Source Ex_CNT3
GND
Source Ex_CNT2
-
-
-
Ex_DI 9
Ex_DI 14
Ex_DI 15
-
Ex_DI 16
Ex_DI 19
Ex_DI 20
-
Ex_DI 23
-
Ex_DI 24
Ex_DI 27
Ex_DI 28
-
Ex_DI 31
-
-
-
-
-
-
-
-
-
Ex_DI 0
-
Ex_DI 3
-
Ex_DI 4
Ex_DI 7
Ex_DI 8
ORION card with counter expansion
(ORION-xxxx-x02, -x03, -x04, -x05)
68-pin Amplimite series
(AMP: 174339-5) SCSI II
Note: Only available for standard systems using ORION-xxxx cards!
!
10 Optional counter inputs (in conjunction with DEWE-ORION-xxxx boards)
1: Source Bx_CNT(n)
2: Aux_Bx_CNT(n)
3: Gate Bx_CNT(n)
4: Power GND
5: +5 V (max. 500 mA)
6: +12 V (max. 500 mA)
7: Signal GND n .. channels 0 to 1 of counter board
1
2
3
7
6
5
4
7-pin female LEMO connector
EGG.1B.307
Mating connector:
LEMO FGG.1B.307.CLAD52Z
(for cable diameter 4.1 to 5.0 mm)
LEMO FGG.1B.307.CLAD62Z
(for cable diameter 5.1 to 6.0 mm)
Cable to open end, 5 m long:
CTR-CBL-05
11 EPAD connector (LEMO)
To connect DEWETRON EPAD modules to the system.
2
3
Lemo EGG.1B.304
1
4
Pin assignment
1: RS-485 A
2: RS-485 B
3: +12 V
4: GND
Shield is connected on housing
Mating connector: LEMO FGG.1B.304.CLAD52Z (for cable diameter 4.1 to 5.0 mm)
LEMO FGG.1B.304.CLAD62Z (for cable diameter 5.1 to 6.0 mm)
DE-M091001E • DEWE-1201 • Technical Reference Manual • Printing version 1.0.1 • December 10, 2009
21
Main System
12 WLAN antenna
The DEWE-1201 supports 802.11 b/g/n WLAN standards.
13 Power supply for accessories
To supply your accessories with 12 V
DC
. Fused with an 1.5 A self-recovering fuse.
Pin assginment
1: +12 V, max 1.5 A
2: GND
Lemo EGG.1B.302
Mating connector: LEMO FGG.1B.302.CLAD52Z (for cable diameter 4.1 to 5.0 mm)
LEMO FGG.1B.302.CLAD62Z (for cable diameter 5.1 to 6.0 mm)
14 Power supply input connector
For details see chapter power supply.
15 RS-232 interface connector
The RS-232 interface connector meets standard RS-232 pin assignment.
16 VGA connector
The VGA connector meets standard VGA pin assignment.
17 PS/2 mouse / keyboard connector
The mouse / keyboard connector could be used to connect a keyboard or an external PS/2 mouse. The connector meets standard PS/2 pin assignment.
18 USB interface connectors (Universal Serial Bus)
The USB interface connectors meets standard USB pin assignment.
20 IEEE-1394 (FireWire
®
) connector
The IEEE-1394 interface connectors meets standard Firewire
®
pin assignment.
21 Ethernet connector
The DEWE-1201 system supports 10/100/1000 BaseT Ethernet with standard RJ45 connector.
22
Main System
Possible confi gurations
Typical system configurations
16 channels MDAQ (DSUB) 16 channels MDAQ (8 DSUB, 8 BNC)
32 channel configuration; using DEWE-ORION-3216-10x or -3222-10x cards
16 channels MDAQ (BNC)
Analog expansion cable
Cascading systems using DEWESoft NET
DEWE-31-16 or DEWE-30-16
LAN
ORION SYNC
Up to 10 counters; using DEWE-ORION cards with 10 counters
(DEWE-ORION-1616-105, -1622-104, -1624-102 etc. )
LAN
ORION SYNC
ORION-CB-CNT8
Expansion cable
DE-M091001E • DEWE-1201 • Technical Reference Manual • Printing version 1.0.1 • December 10, 2009
23
Main System
MDAQ series amplifiers overview
SUB Modules for MDAQ-BASE-x
Module
MDAQ-SUB-STG-D
Connector: DB-9
V
MDAQ-SUB-BRIDGE-D
Connector: DB-9
V
MDAQ-SUB-V-200-D
Connector: DB-9
V
MDAQ-SUB-V-200-BNC
Connector: BNC
# CH Input type
8
* Strain-gage (Full-, half and quarter-
bridge, incl. shunt calibration)
for strain gage application:
* Voltage up to ±10 V:
* ICP via MSI-BR-ACC:
* Voltage up to 200 V via MSI-BR-V-200:
* Thermocouple via MSI-BR-TH-x:
* Pt100, Pt200, Pt500, Pt1000, Pt2000
and resistance via MSI-BR-RTD:
8
* Strain-gage (Full-, and half bridge)
for strain gage sensors:
* Voltage up to ±10 V:
* ICP, via MSI-BR-ACC:
* Voltage up to 200 V via MSI-BR-V-200:
* Thermocouple via MSI-BR-TH-x:
* Pt100, Pt200, Pt500, Pt1000, Pt2000
and resistance via MSI-BR-RTD:
Input ranges
14 ranges from ±0.5 to 1000 mV/V
(@ 5 V
DC
excitation
15 ranges from ±2.5 mV to ±10 V
7 ranges from ±0.25 mV to ±10 V
6 ranges from ±10 to ±200 V full range of TC type
-200 °C to 1000 °C and 0 to 6.5 kOhm
14 ranges from ±0.5 to 1000 mV/V
(@ 5 V
DC
excitation
15 ranges from ±2.5 mV to ±10 V
7 ranges from ±0.25 mV to ±10 V
6 ranges from ±10 to ±200 V full range of TC type
-200 °C to 1000 °C and 0 to 6.5 kOhm
8
* Voltage up to ±200 V:
* ICP, via MSI-V-ACC:
* Pt100, Pt200, Pt500, Pt1000, Pt2000
and resistance via MSI-V-RTD:
Note: for safety reasons, max. 120 V
DC
or 50 V
13 ranges from ±0.125 to ±200 V
7 ranges from ±0.25 mV to ±10 V
-200 °C to 1000 °C and 0 to 6.5 kOhm
AC
are allowed at this connector
8
* Voltage up to ±200 V:
13 ranges from ±0.125 to ±200 V
V
Note: for safety reasons, max. 120 V
DC
or 50 V
AC
are allowed at this connector
MDAQ-SUB-ACC-BNC
Connector: BNC
MDAQ-SUB-ACC-A-BNC
Connector: BNC
MDAQ-SUB-ACC-A-MD
Connector: Microdot
8
* ICP ® or voltage up to ±10 V:
8 ranges from ±125 mV to ±10 V
Single-ended or differential input and one highpass filter
3.4 Hz highpass filter for noise and shock response measurement
MDAQ-SUB-ACC-BNC-S1
0,16 Hz for structural and modal analysis, human body vibration measurement
(rest same as MDAQ-SUB-ACC-BNC)
8
* ICP ® or voltage up to ±10 V:
8 ranges from ±125 mV to ±10 V
Single-ended input and two HP filters
0.16 Hz for structural and modal analysis, human body vibration measurement
3.4 Hz for noise and shock response measurement
8
* ICP ® or voltage up to ±10 V:
8 ranges from ±125 mV to ±10 V
Single-ended input, two HP filters and sensor failure detection
0.16 Hz for structural and modal analysis, human body vibration measurement
3.4 Hz for noise and shock response measurement
Option: test signal input for all channels
■ BW: 30 kHz
■ BW: 30 kHz
HP: 0.16 Hz
■ BW: 300 kHz
-
BW: 300 kHz
■ BW: 300 kHz
HP: 3.4 Hz
■ BW: 300 kHz
HP: 0.16 Hz
-
0 to 12 V
DC
+15 V
DC
and
0 to 12 V
DC
±15 V
DC
and
0 to 12 V
DC
4 / 8 mA
4 / 8 mA
■ BW: 300 kHz
HP: 0.16 Hz, 3.4 Hz
4 / 8 mA
■ BW: 300 kHz
HP: 0.16 Hz, 3.4 Hz
4 / 8 mA
24
Main System
Filter modules for MDAQ
Module
MDAQ-AAF4-5-BU
MDAQ-FILT-5-BU
MDAQ-FILT-5-BU-S1
MDAQ-FILT-5-BE
# CH
16
16
Filter characteristics
Butterworth
Butterworth
Cut-off frequencies
100 Hz, 1, 10, 30, 100 kHz, Bypass
Note: not possible in all system configurations.
Please contact factory for details.
30, 100, 300 Hz, 1, 10 kHz, Bypass
16 Butterworth 100 Hz, 1, 10, 30, 100 kHz, Bypass
16 Bessel 30, 100, 300 Hz, 1, 10 kHz, Bypass
2 nd
2 nd
Order
4 th
2 nd
Modular smart interfaces to connect various sensors
Multisensor inputs for MDAQ and DAQP modules
MSI-BR-ACC
MSI-V-ACC
MDAQ-SUB-STG-D
�
-
MDAQ-SUB-BRIDGE-D MDAQ-SUB-V-200-D
�
-
-
�
DAQP-BRIDGE-A *
-
-
DAQP-BRIDGE-B
-
-
Isotron (constant current powered) adapter for MDAQ-SUB-BRIDGE / -STG modules with DB9 connector
Excitation current 4 mA at 21 V, High pass filter 1.5 Hz, BNC connector
Bandwidth and ranges are defined by connected amplifier
automatic adapter identification
DAQP-LV-D
-
�
Isotron (constant current powered) adapter for DAQP-V-x and MDAQ-SUB-V-200 modules with DB9 connector
Excitation current 4 mA at 21 V, High pass filter 1.5 Hz, BNC connector
Bandwidth and ranges are defined by connected amplifier automatic adapter identification
MSI-BR-V-200
MSI-BR-RTD
MSI-V-RTD
�
�
� -
200 V input adapter for MDAQ-SUB-BRIDGE / -STG modules with DB9 connector
Differential input configuration, BNC connector
Bandwidth and ranges are defined by connected amplifier automatic adapter identification
� -
Pt100, Pt200, Pt500, Pt1000 and Pt2000 adapter for MDAQ-SUB-BRIDGE / -STG modules with DB9 connector
2, 3 and 4 wire connection methods, 5-pin Binder 710 series connector automatic adapter identification
-
-
� -
Pt100, Pt200, Pt500 and Pt1000 adapter for DAQP-V-x and MDAQ-SUB-V-200 modules with DB9 connector
2, 3 and 4 wire connection methods, 5-pin Binder 710 series connector automatic adapter identification
�
MSI-BR-TH-K
MSI-BR-TH-J
MSI-BR-TH-T
� � � � isolated TC sensor any TC sensor isolated TC sensor
Thermocouple type K / J / T adapter for DAQP-BRIDGE-x and MDAQ-SUB-BRIDGE / -STG modules with DB9 connector
For use with
isolated thermocouple sensors only ! (except in combination with DAQP-BRIDGE-A*)
High accuracy cold junction reference measurement, 1 m thermo cable with Mini TC connector automatic adapter identification
* no automatic MSI identification with DAQP-BRIDGE-A
DE-M091001E • DEWE-1201 • Technical Reference Manual • Printing version 1.0.1 • December 10, 2009
25
Main System
Power supply
DEWE-1201 with standard external AC/DC power supply
24 V
DC
Power supply pin assignment:
1
2
Lemo EGJ.2B.303
1 V+
2 GND
3
3 Ignition
Internal 250 W DC power supply
250 W DC power supply
Input:
Input range: 6 to 30 V
DC
(startup voltage min. 8 V
DC
)*
Input frequency:
Output:
Output power:
Output voltages:
DC
250 W
+3.3 V (max. 15 A)
+5 V (max. 15 A)
+5 Vsb (max. 1.5 A)
+12 V (max. 12 A)
-12 V (max. 0.15 A)
*) For further information please see chapter ‚DIP-switch operation‘.
AC/DC power supply
100 to 240 V
AC
IN
26
Main System
DIP-switch operation
DIP switch (ON = down)
1 2 3 P
OFF OFF OFF P0
ON OFF OFF P1
OFF ON OFF P2
ON ON OFF P3
OFF OFF ON P4
ON OFF ON P5
OFF ON ON P6
ON ON ON P7
OFF-delay (all rails ON) Hard-OFF (5 VSB)
Standard PSU mode
5 sec + 1 min AutoLatch* 1 min
1 min + 1 min AutoLatch* NEVER
1 min + 1 min AutoLatch*
15 min
15 min
30 min
2 hours
1 min
1 min
NEVER
1 min
NEVER
IMPORTANT: Always use the “Hibernate” feature, never use “Standby” as it can severely discharge your battery over extended periods of time.
NEVER use “hard-off = NEVER” settings unless you understand the risks of battery depletion. Even with safety limits in place, your battery might be not able to start your engine. “Hard-off=NEVER" keeps your
5 VSB rail on at all times.
*AutoLatch is active during the first 60 sec. of PC operation (and only during the first 60 seconds). For example, if ignition is turned ON and then OFF right away, M4-ATX will latch ignition in ON position for the next 60 seconds, allowing your operating system to fully come up. This will prevent disk drive corruption or systems that remain hung in the ON position. After the first 60 seconds of system operation, the AutoLatch feature will be removed and system will shut down at as governed by the “OFF-delay” setting.
P0: In this mode, the M4-ATX behaves like a regular ATX power supply. If J6 is connected to the motherboard, M4-ATX will also send a gratuitous “ON pulse” to the motherboard right after power is first applied.
P1 (recommended): Sends ON pulse to motherboard when ignition is ON for more than 5 seconds, sends OFF pulse to motherboard 5 seconds after ignition is turned off. Waits another 60 seconds and then shuts down 5 VSB to conserve battery.
In this mode, the M4-ATX consumes less than 0.5 mA. This is our recommended setting.
Power challenges in a vehicle PC:
One of most difficult tasks of operating a PC in a vehicle is power consumption while the computer is OFF.
Even when your computer is OFF or in suspend, it will still consume about 50-150 mA on the 5 VSB rail. No matter how big your battery is, you will eventually drain it if proper actions are not taken.
The M4-ATX is addressing these issues by cutting off the 5 VSB rail after a pre-defined amount of time (see
Hard-OFF). During Hard-OFF if the battery level drops below 11.2 V for more than one minute, M4-ATX will shut down and reactivate only when the input voltage is above 12 V.
Engine Cranks, under-voltage and over-voltage situations:
Another difficult task is maintaining stable power to your PC. While car batteries are rated at 12 V, they actually provide voltages in between 8-16 V (engine cranks) or as high as 80 V (load dump). Most times, your battery will stay at 13.5 V but extra precautions need to take place in order to prevent such situations.
M4-ATX operates as low as 6 V and as high as 30 V while providing strict regulation as well as input voltage clamping and reverse protection.
DE-M091001E • DEWE-1201 • Technical Reference Manual • Printing version 1.0.1 • December 10, 2009
27
Main System
Mode of operation
1) Ignition = OFF. Nothing happens. M4-ATX is waiting for ignition signals.
2) Ignition = ON. M4-ATX waits for few seconds then turns on the 5 VSB rail. After another second M4-ATX sends an “ON” signal to the motherboard via the 2 wires connected to the motherboard’s ON/OFF pins.
The motherboard will turn ON and your system should start booting. The Ignition state will be latched for
60 more seconds so that the motherboard will have a change to come up in a clean manner.
3) Ignition = ON. Your computer will remain ON.
4) Ignition = OFF. M4-ATX waits for “OFF-delay” in seconds (see jumper chart) and then it turns the motherboard OFF by sending a signal to the motherboard’s ON/OFF switch. Your computer should turn off gracefully (shutdown procedure). After shutdown, 5 VSB will still be provided for another “Hard-OFF” seconds. In the event where the shutdown process is longer than “HARDOFF”
(Operating System gets frozen, etc), power will be shut down hard, turning off all power rails.
During the Hard-OFF procedure, the battery levels will be constantly monitored to prevent deep discharge situations.
5) M4-ATX will go to step 1, if ignition is turned ON again.
NOTE: When all dip switches are off, M4-ATX acts as a regular power supply. M4-ATX will also send a gratuitous “ON” pulse (to the ON/OFF motherboard pins, should you have a wire harness connected to it) when power is applied for the first time. Do not connect the on/off switch if you don’t want your PC to be started automatically.
28