OPHIR RF - Example: Setting the VSWR Monitor

Appendix A
This Document contains proprietary and confidential information of Ophir RF Inc.
March 28, 2023 Rev: H
11
Startup Option:
RS-232
On or
Off
Enables or disables the Front Panel Controller’s
onboard RS-232 serial port.
Startup Option:
*RS-422
On or
Off
Enables or disables the Front Panel Controller’s
onboard RS-422 serial port.
Startup Option:
GPIB Port
On or
Off
Enables or disable the Front Panel Controller’s
onboard GPIB port.
Startup Option:
Ethernet Port
On or
Off
Enables or disable the Front Panel Controller’s
onboard Ethernet port.
VSWR Alarm:
VSWR Alarm: X
Where
X = 0 to 20
The VSWR Alarm Threshold represents the difference
between the forward power and the reflected power
(in dBm). A higher value here represents a
configuration that is more sensitive to VSWR.
Restore Defaults
Yes/No
This allows the user to restore ALL settings and
calibration parameters to those set at the factory.
Display
Brightness
25%, 50%, 75%,
100%
Allows for setting of the brightness of the vacuum-
fluorescent display.
GPIB Termination
LF Term. On/Off
Adds an extra Line Feed (If On) to the GPIB.
Telnet Timeout
Time: X Min
Telnet idle-period timeout. X = 0 to 100 minutes,
where 0 = infinite (no timeout)
Exit
Save? (Y/N)
Exits User Configuration mode and returns the display
to Run Mode. The user is given the choice to save
options. Other than as mentioned above, choosing
“No” will result in all changes being lost, and the
previous settings will remain in EEPROM.
*= May not be displayed if Option was not purchased.
1.8.1 Example: Setting the VSWR Monitor
This item is used to select the difference between the forward and reverse power levels
(loosely defined herein as VSWR) that will result in the amplifier automatically setting
the gain to zero, then ramping back up toward the previous gain or ALC setting. If the
fault condition persists, the output power will continue to cycle until the condition is
rectified.
Procedure:
In this example, the unit is set so that the minimum VSWR level is 5 dB.
User: Select “VSWR” from the main System Configuration menu.
Unit: Top line displays: “Using the  and  buttons, set the minimum value for
the VSWR alarm, and press the MODE button.” Second line displays:
“Max VSWR: 2.0 dB”
User: Use the  and  buttons to change the VSWR Alarm level until it reads
“Max VSWR: 5.0 dB”, then press the MODE button.
Unit: Stores the information and returns to the main System Configuration
menu.