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AN-49-005 (December 23, 2019) M176825 (R95497) File: AN-49-005(J).doc
This document and its contents are the property of Mini-Circuits
2.3.4
Ethernet Control (RCDAT)
-Connect plug suited for available wall socket to the provided power adaptor and plug in
the power adaptor (if a USB port is available it can be used instead of the AC mains
power adapter).
-Connect USB cable between supplied power adaptor and RCDAT USB port.
-Note the USB indicator lights up.
-Connect a standard network cable between RCDAT unit RJ45 socket and network
port.
-Note the network indicators on the RJ45 socket of the RCDAT unit light up after a few
seconds.
-Connect RCDAT input and output SMA ports to your system.
Figure 2.3.4:
RCDAT Ethernet setup
2.3.5
SPI Control (RUDAT-13G-xx)
- Connect the SPI Clock, Data and Latch Enable pins (See pinout below) to your I/O
control device
-Connect power as for RS232 control
-Note the Indicator lights up.
-Connect RUDAT input and output SMA ports to your system.
Notes:
As SPI and RS232 control share the same plug, when using SPI control it is
recommended to keep pins 2 & 3 disconnected to avoid problems with proper operation. SPI
control allows the device’s attenuation to be set using a simple serial data sequence of LVTTL
logic levels, without the need for a PC and minimal control hardware or software. The SPI
voltage levels and timing instructions are covered in the model’s datasheet. This is a
synchronous communication method designed for minimal control systems and thus, it is not
possible to query any of the attenuator’s parameters in this mode of operation
Parameter
Conditions
Min.
Typ.
Max.
Units
Voltage levels
Logic High Voltage
Input
2.1
̶
3.3
V
Logic Low Voltage
Input
0
̶
0.8
Control Current
Per Pin
̶
̶
1
mA
Clock Frequency
̶
̶
̶
10
MHz
