Boonton 9240 RF Voltmeter - Manual (Page 26)

Boonton 9240 Series RF Voltmeter
8. Use the <Down Arrow> key to move the "<" cursor to SWITCHES and press <ENTER>. Press each
front panel key, avoiding <MENU> until last. Each key press will result in an identifying message;
<MENU> will exit the test and return to the MENU.
9. Use the <Down Arrow> key to select RECORDER and press <ENTER>. This test will sequentially
send a DC voltage in 1 volt steps to the recorder output BNC connector on the rear panel. The test
will continue until <MENU> is pressed. Use a DC voltmeter to verify correct operation.
10. Press <MENU> to return to the measurement display.
11. Press the <Sensor> key and verify that the RF Voltage Probe serial number(s) appear under the
channel heading(s). An active channel with no sensor installed will report a table number.
12. Press the <AVG> key and verify that the filter time and number of samples appear for each active
channel.
13. Press the <Menu> key followed by the <Zero/Cal> key and select ZERO function for the active
channel. Verify the ZERO operation completes successfully.
14. Repeat steps 13 for channel 2 if installed.
15. Connect a GPIB controller to the Model 9240. Verify that the instrument can be addressed to Listen at
its IEEE bus address, and set to Remote. The display must show the correct status on the bottom line
of the display. For message passing, the line terminators for the controller and the Model 9240 must
be compatible for both Listen and Talk. Use <Menu> <SETUP> <IEEE> to set address and
terminators for the 9240. Address the Model 9240 to Listen/Remote and send the command "*IDN?"
EOL. Then address the Model 9240 to Talk (controller to listen) and verify that the correct
identification string is returned. For example using SCPI emulation the ID string returned would be as
follows;
BOONTON ELECTRONICS, 9242, 11002, 20110111
16. Connect a dumb terminal or PC serial terminal to the Model 9240. Use a null modem if the terminal is
wired as DCE. For message communication to take place, the parameters of the serial connection and
message strings must agree between the terminal and the Model 9240. Use <Menu> <SETUP> <RS-
232> to set parameters for the 9240. Send the command or "*IDN?" EOL and verify that the correct
identification string is returned.
Installation
2-4