RTI General Information and Pinout¶
RTI Backplane¶
For most applications, the AL-4010 needs to be configured with a backplane. RTIs are used to format signals into common bus types and are mounted onto SLSC chassis using screws. These screws will be provided with the RTI board and will have a corresponding threaded hole on the top rear of the SLSC chassis. The RTI board will have several holes which the screws will fit through.
Mount the RTI with the external connectors (to measurement devices) and external references, facing away from the chassis. The available connectors will vary depending on which RTI is being used. The figure below shows an example of an RTI and how it is mounted on the SLSC Chassis.
SET-12344¶
For AL-4010 use the SET-12344 backplane, it passes on all signals from the XJ2 and XJ3 connectors on the AL-4010 to connectors that are easier to interface with.
SET-12344 RTI Pinout¶
JR1 connector
Handles power, positive voltages upper row, negative voltages lower row.
JR1 Pinout
Pin |
Description |
|---|---|
H |
Positive Voltage 1 |
G |
Negative Voltage 1 |
F |
Positive Voltage 2 |
E |
Negative Voltage 2 |
D |
Positive Voltage 3 |
C |
Negative Voltage 3 |
B |
Positive Voltage 4 |
A |
Negative Voltage 4 |
JR2 connector
Handles all signals coupled to SPI.
SPI_Clk = RTI_IO_1 = P0.0 = DSUB Pin 1, Signal is low when idle
SPI_CSn = RTI_IO_2 = P0.1 = DSUB Pin 20, Signal is high when idle
SPI_MOSI = RTI_IO_3 = P0.2 = DSUB Pin 2, Signal is do not care when idle
SPI_MISO = RTI_IO_9 = P1.0 = DSUB Pin 5, Signal is low when idle
JR2 Pinout
JR2 Pin |
Signal |
Description |
|---|---|---|
1 |
P0.0 |
SPI_Clk |
2 |
P0.2 |
SPI_MOSI |
3 |
P0.4 |
|
4 |
P0.6 |
|
5 |
P1.0 |
SPI_MISO |
6 |
P1.2 |
|
7 |
P1.4 |
|
8 |
P1.6 |
|
9 |
GND |
|
10 |
GND |
|
11 |
P2.0 |
|
12 |
P2.2 |
|
13 |
P2.4 |
|
14 |
P2.6 |
|
15 |
P3.0 |
|
16 |
P3.2 |
|
17 |
P3.4 |
|
18 |
P3.6 |
|
19 |
GND |
Ground |
20 |
P0.1 |
SPI_CSn |
21 |
P0.3 |
|
22 |
P0.5 |
|
23 |
P0.7 |
|
24 |
P1.1 |
|
25 |
P1.3 |
|
26 |
P1.5 |
|
27 |
P1.7 |
|
28 |
GND |
|
29 |
GND |
|
30 |
P2.1 |
|
31 |
P2.3 |
|
32 |
P2.5 |
|
33 |
P2.7 |
|
34 |
P3.1 |
|
35 |
P3.3 |
|
36 |
P3.5 |
|
37 |
P3.7 |
Other Recommendations¶
It is recommended to make use of a resistor (approximately 56 Ohms) in series on SPI_MISO to minimize disturbances and noise.
