Annex > Hardware Interfaces > AUX I/O Connector
AUX I/O Connector
Pin assignment of the AUX I/O Connector connector

Pin

Signal

Description

1

FHOP_DATA

Data input for Fast Hopping list mode.

See "List Mode"

2

Ground

Ground

3

FHOP_CLK

Clock input for Fast Hopping list mode.

See "List Mode"

4

FHOP_STRB

Strobe input for Fast Hopping list mode.

See "List Mode"

5

RF OFF

Input for fast switching of the RF output.

Active High (1) switches the RF output off. A subsequent Active Low (0) switches the RF output on again. Switching is performed very fast (10us). However, the attenuation of the switched off output is considerably less than after regular switch-off, because the attenuator is not set to maximum attenuation.

6

INST TRIG

Input for external triggering of the analog modulations, sweeps and List mode.

HOP input for controlling the frequency hop mode with external source in List mode.

7

BLANK

Output for blank signal. This signal marks the blank times (invalid level indication). The signal is generated automatically.

8

OPC

Output for Operation Complete line. Active High signals that all remote control commands have been executed. The output is always active.

9 .. 10

Ground

Ground

11 .. 26

FM_DAT

Parallel data input with 16-bit word width for digital FM modulation data. The FM-Data bus is directly connected to the DDS of the syntheziser module. Thus, very fast frequency hop (settling times of 10 us) is possible for frequency bandwidth up to 80 MHz.

See "Frequency Modulation (FM)"

 


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