Operation
SDM-309B Satellite Modem
3–38
MN/U-SDM309B Rev. #
Time
Time of day set/display function.
The current time that the modem is set for is displayed when
selected. To set the modem time press the “ENTER” key and
use the right and left arrow keys to position the flashing
cursor over the parameter to be changed. Use the up and
down arrow keys to change the parameter to the desired
value. Once the parameters are displayed as desired press
the “ENTER” key to set the time.
Date
Date set/display.
Follow the same procedure as outlined for the time function
to view and set the date.
LAMP TEST ??
Lamp test function used to illuminate all the front panel
indicators for three seconds.
Press the “ENTER” key to turn on all of the front panel
indicators for three seconds.
Address/Parity/Baud Rate
The current modem address, parity selection and selected
baud rate of the modem is displayed. This in only a monitor
function. No changes can be made from this menu.
On entry the currently set address of the modem will be
displayed (0 to 255) on the first line. The currently set parity,
even or odd, will be displayed on the second line. The
currently set baud rate from 110 to 9600 will also be
displayed on the second line.
POW ADJ.
Modulator Power Adjust Offset.
Allows the operator to offset the modulator output power
readout in the configuration menu. This will be the highest
modulator power that will be displayed and programmed.
This feature does not actually change the modulator power
level. The function is to change the actual reading to display
an offset value in the monitor. The modulator Power Offset
can be set b20.0 to -20.0 dB in 0.5 dB increments.
Note:
The maximum output power adjust, set in this window,
must match the maximum output power of the modulator
installed in the modem. In a switching system the backup
modem must be set the same as the prime modem or a fault
will occur.
OP MODE
Operation Mode. Programs the modem operation for TX only,
RX only, or Duplex operation.
On entry the flashing cursor is on the first character of the
display. Use the arrow keys to select TX only, RX only, or
Duplex. Press the “ENTER” key to execute the change.
When TX only or RX only is selected, the appropriate faults
are masked from the Faults and Stored Faults menu.
Fast ACQ
Fast Acquisition function.
Turns the fast acquisition and directed sweep function ON or
OFF. When the fast acquisition has been turned OFF, the
Swp_Cntr, SWP_Rnge and SWP_DIR windows in the
configuration menu are disabled and do not appear. Also, in
the “Monitor” menu, Swp_Freq will not appear. When turned
“OFF” fast acquisition does not occur.
Summary of Contents for SDM-309B
Page 7: ...Preface SDM 309B Satellite Modem iv Rev 0 This page is intentionally blank ...
Page 13: ...Table of Contents SDM 309B Satellite Modem x Rev 0 This page is intentionally blank ...
Page 16: ...SDM 309B Satellite Modem Introduction MN U SDM309B Rev 1 1 3 Figure 1 1 SDM 309B Modem ...
Page 18: ...SDM 309B Satellite Modem Introduction MN U SDM309B Rev 1 1 5 Figure 1 3 Modular Construction ...
Page 25: ...Introduction SDM 309B Satellite Modem 1 1 12 MN U SDM309B Rev ...
Page 28: ...SDM 309B Satellite Modem Installation MN U SDM309B Rev 2 2 3 Figure 2 1 Rear Panel View ...
Page 34: ...SDM 309B Satellite Modem Operation MN U SDM309B Rev 3 3 Figure 3 1 Front Panel View ...
Page 47: ...Operation SDM 309B Satellite Modem 3 16 MN U SDM309B Rev Figure 3 2 Menu Tree ...
Page 48: ...SDM 309B Satellite Modem Operation MN U SDM309B Rev 3 17 Figure 3 3 Menu Tree ...
Page 49: ...Operation SDM 309B Satellite Modem 3 18 MN U SDM309B Rev Figure 3 4 Menu Tree ...
Page 50: ...SDM 309B Satellite Modem Operation MN U SDM309B Rev 3 19 Figure 3 5 Menu Tree ...
Page 51: ...Operation SDM 309B Satellite Modem 3 20 MN U SDM309B Rev Figure 3 6 Menu Tree ...
Page 52: ...SDM 309B Satellite Modem Operation MN U SDM309B Rev 3 21 Figure 3 7 Menu Tree ...
Page 53: ...Operation SDM 309B Satellite Modem 3 22 MN U SDM309B Rev Figure 3 8 IF Loopback ...
Page 54: ...SDM 309B Satellite Modem Operation MN U SDM309B Rev 3 23 Figure 3 9 RF Loopback ...
Page 55: ...Operation SDM 309B Satellite Modem 3 24 MN U SDM309B Rev Figure 3 10 Interface Loopback ...
Page 56: ...SDM 309B Satellite Modem Operation MN U SDM309B Rev 3 25 Figure 3 11 Baseband Loopback ...
Page 71: ...Operation SDM 309B Satellite Modem 3 40 MN U SDM309B Rev Figure 3 12 Menu Tree ...
Page 72: ...SDM 309B Satellite Modem Operation MN U SDM309B Rev 3 41 Figure 3 13 Menu Tree ...
Page 73: ...Operation SDM 309B Satellite Modem 3 42 MN U SDM309B Rev Figure 3 14 Menu Tree ...
Page 74: ...SDM 309B Satellite Modem Operation MN U SDM309B Rev 3 43 Figure 3 15 Menu Tree ...
Page 75: ...Operation SDM 309B Satellite Modem 3 44 MN U SDM309B Rev Figure 3 16 Menu Tree ...
Page 76: ...SDM 309B Satellite Modem Operation MN U SDM309B Rev 3 45 Figure 3 17 Menu Tree ...
Page 77: ...Operation SDM 309B Satellite Modem 3 46 MN U SDM309B Rev ...
Page 88: ...SDM 309B Satellite Modem M C and Interfaces MN U SDM309B Rev 4 4 11 Figure 4 4 IBS Fault Tree ...
Page 89: ...M C and Interfaces SDM 309B Satellite Modem 4 4 12 MN U SDM309B Rev Figure 4 5 Jumper Table ...
Page 127: ...SDM 309B Satellite Modem Theory of Operation MN U SDM309B Rev 5 5 3 Figure 5 1 Modulator Card ...
Page 151: ...Maintenance SDM 309B Satellite Modem 6 6 6 MN U SDM309B Rev Figure 6 3 Typical Eye Patterns ...
Page 177: ...SDM 309B Satellite Modem Data Rates and Filters MN U SDM309B Rev A 9 ...
Page 235: ...External Channel Unit SDM 309B Satellite Modem C C 28 MN U SDM309B Rev Figure C 13 Menu Tree ...
Page 236: ...SDM 309B Satellite Modem External Channel Unit MN U SDM309B Rev C C 29 Figure C 14 Menu Tree ...
Page 237: ...External Channel Unit SDM 309B Satellite Modem C C 30 MN U SDM309B Rev Figure C 15 Menu Tree ...
Page 238: ...SDM 309B Satellite Modem External Channel Unit MN U SDM309B Rev C C 31 ...