Maintenance Testing; Test Point Samples; Figure 34. Converter Signal And Interconnecting Cable Diagram (With Tsm Switching Module) - Comtech EF Data DT-4572 Installation And Operation Manual

DT4572 X-Band Down Converter
Maintenance and Troubleshooting
Prime Power Cord Input
5/10 MHz Ref. Osc. Input
Summary Fault Relay Output
Serial Comm. Interface
(RS-485 / RS-232C)- COM 1
High Speed Bus (HSB)
IF Ouput (IF)
IF Loop Input (LP IN)
IF Loop Output (LP OUT)
RF Input (RF)
Not Used
Not Used
Figure 34. Converter Signal and Interconnecting Cable Diagram
D.2 M
AINTENANCE
Use the instructions in Chapter 2, Installation, for installing the converter for checkout,
and the procedures in Chapter 3, System Operation, for operating the converter.
The converter is a Down Converter which translates the input RF frequency to an output
IF frequency. The RF input level is -45 dBm (typical), and the RF output level is 0 dBm
(typical).
D.2.1 T P
EST OINT
The IF output and RF input can be monitored at the RF Sample Test Points on the front
panel. A BNC connector is provided for the IF sample, and an SMA connector is
provided for the RF output. The RF sample output level is -20 dBc nominal, and the IF
sample level is -20 dBc nominal.
J2
P1
J1
Monitor & Control Assembly
J3
J4
J6
J8
Transmit
I/O Switch
J5
Module
J7
(TSM)
J9
(with TSM Switching Module)
T
ESTING
S
AMPLES
Reference
Power
Oscillator
Supply
RF Converter
76
Rev. 0
MM/DT4572.IOM
Fine
Step
Module
Sum
Loop
Module