Hardware Interfaces
R&S
®
SMJ100A
825
Operating Manual 1403.7458.32 ─ 14
Table A-2: Pin assignment of the AUX I/O Connector connector
Pin
Signal
Description
1 .. 25
Ground
⊥
Ground
26
LEV ATT
Signal input/output for controlling the level attenuation.
With
external
envelope curve control ("Custom Digital Modulation" only),
the pin is the input for the control signal LEV_ATT.
With
internal
envelope curve control, the control signal LEV_ATT is output
for Path A.
27
CW MODE
Signal input for controlling the switchover between the modulated and
unmodulated RF signal with activated external modulation/CW switching in
the "Custom Digital Modulation" menu.
Signal output for the CW control signal with internal source selected. This
signal marks the CW mode in which digital modulation is deactivated and
the RF signal is output in unmodulated form. In the case of digital stand-
ards with selectable modulation mode, the signal indicates the active mod-
ulation mode (GSM: (G)MSK = high, 8PSK EDGE = low).
28
not used
not used
29 .. 38
PARDATA0 ..
PARDATA9
Parallel data input/output 0...D with 10-bit word width for digital modulation.
If the data source "External Parallel" is selected, these pins are the data
inputs.
If a different data source is selected, the data is output here ("Custom Digi-
tal Modulation", Path A).
39
USER 3
USER input/output which can be configured for various purposes.
40
USER 4
USER input/output which can be configured for various purposes.
41
MARKER 3
Output for the freely programmable marker signal 3 of Path A. The output is
permanently assigned.
42
not used
not used
43
not used
not used
44
not used
not used
45
BURST
Signal input/output for controlling the burst ramp.
With
external
envelope curve control ("Custom Digital Modulation" only),
the pin is the input for the control signal "BURST_RAMP".
With
internal
envelope curve control, the control signal "BURST_RAMP" is
output for Path A.
46
EXT TUNE
Tuning input for the internal reference frequency.
47
BITCLK
Output Bit clock for internal mode.
48
USER 2
USER input/output which can be configured for various purposes.
49
SYMBCLK
Symbol clock output for internal mode.
50
not used
not used
AUX I/O Connector
Summary of Contents for SMJ100A
Page 34: ...Preface R S SMJ100A 18 Operating Manual 1403 7458 32 14 Notes on Screenshots...
Page 86: ...Preparing for Use R S SMJ100A 70 Operating Manual 1403 7458 32 14 LXI Configuration...
Page 826: ...Remote Control Commands R S SMJ100A 810 Operating Manual 1403 7458 32 14 UNIT Subsystem...
Page 828: ...Maintenance R S SMJ100A 812 Operating Manual 1403 7458 32 14 Storing and Packing...
Page 844: ...Hardware Interfaces R S SMJ100A 828 Operating Manual 1403 7458 32 14 BERT Connector...
