Bio-Rad VersaFluor™ Fluorometer - Manual (Page 16)

DB25F Connector Signal and DB25M Connector
to VersaFluor (Male) Direction to serial device
2 TX - - > 3
3 < - - RX 2
4 RTS - - > 5
5 < - - CTS 4
7 Common 7
20 DTR - - > 20
(other pins are open
in VersaFluor)
The serial port can be reconfigured by using print setup command (Figure 4.9). The three
parameters that can be configured are the baud rate, flow control, and the data spacing. To
access the print parameters, press SETUP in the main menu, then press MORE in the second
menu, and finally press PRINT SETUP in the third menu (Figure 4.3). The serial port baud
rate can be changed by pressing the BAUD button. The baud rates settings are NONE, 1200,
2400, 4800, or 9600. The data flow control can be set to XON or R/CTS by pressing the
CNTL button. The print spacing can be set to NONE, SPACES, or TABS. Refer to Section
3.4 for setting up the VersaFluor thermal printer. For other printers or computers, please refer
to the instrument's instruction manual for correct settings.
Fig. 4.9. Serial port menus.
4.9 Kinetic Readings
The VersaFluor Fluorometer supports kinetic studies via timed data sampling. The user
can set the number of readings and the intervals between readings. Each time a reading is
taken, the value is shown on the fluorescence display. The value and date/time information is
also sent to the serial port for printing or downloading to a computer database.
To access the kinetic or timed reading parameters, press SETUP in the main menu, then
press MORE in the second menu, and finally press TIMED SETUP (Figure 4.3). To set the
timed reading parameters press the SET INTVL button. The timed interval can be in seconds
(SEC) or minutes (MIN). The number of readings can be set in the COUNT area. Use the
arrow button (—>) to scroll between time and counts. Use the UP and DOWN buttons to
raise or lower each value. The example in Figure 4.10 shows that readings will occur every
5 seconds, 15 times (a total of 75 seconds). Press the EXIT button when the timed reading
parameters are set.
13
PRINT TIMED
SETUP SETUP MORE EXIT
BAUD CNTL PRINT
9600 X-ON SPACES EXIT