Fluke Biomedical 451P - Manual (Page 22)

451P
Operators Manual
12
Self Test
When the Survey Meter is first turned on, it runs through a functional self-test
procedure. During this self-test, the firmware version of the Survey Meter is
displayed.
 Warning
For safe operation and maintenance of the product, note the
chamber bias from the self-test. If chamber bias is LO, the
Product cannot measure high radiation rates accurately. The
Product requires service, contact Fluke.
If the Survey Meter passes the self-test, it goes into the normal operating mode.
If the Survey Meter fails the self-test, it remains locked with the firmware revision
displayed. Contact Fluke for corrective action. See the How to Contact Fluke
section.
Installation
The Survey Meter periodically tests for input at its RS-232 port. When an RS-232
signal is detected, the Survey Meter sends test signals using its sending device
and, if RS-232 is present and operational, the Survey Meter enters into the
communications mode. The Survey Meter display clears and the letters “CO”
display as an indication that the Survey Meter is in the communications mode.
The Survey Meter is compatible with a CRT or printing terminal that has a
standard RS-232 connector and a 1200-baud rate. A computer with a modem or
terminal emulator can be used in place of the terminal. Set up the terminal or
computer for a 1200 baud, 7 data bits, no parity bit, and 1 stop bits. To establish
communications:
1. Attach the RS-232 cable assembly to the back of the Survey Meter.
2. When “CO” appears on the Survey Meter display, press the computer or
terminal spacebar.
3. If the Survey Meter displays the “CO” message, but there is no response at
the terminal press the spacebar twice.
If there is a problem getting the communications message (CO) to be displayed
on the Survey Meter:
1. Be sure the computer communication port is active. The Survey Meter
communication transmitter/RCR pair is active when it detects a negative mark
voltage at the receiver input. (CO) then appears on the Survey Meter display.
2. Press space bar twice.
If there is still a problem, contact Fluke for further instructions. See the How to
Contact Fluke section in this manual.