BRUEL & KJAER PULSE 7788, Technical Documentation Manual

Page: 44 / 62

PULSE Vehicle Pass ‐ by Test Systems – Installation Manual 38
create a new database. You will find instructions for this in the Help function of the
software. Then create a test session in the
Session setup
window.
4) Open the
Measurement task
and click the
Activate
button.
5) Inspect the
Level Meter
, ensure that it is displaying “All groups and signals”.
a) Check microphone signals by tapping on a Microphone and watching the
reaction of the
Level Meter
.
b) Check the radar by waving a hand back and forth in front of the radar and
monitoring the
Level Meter
.
c) Check the photocells (ground or vehicle-mounted) by breaking the beam.
Breaking a photocell beam should produce a jump on the
Level Meter
channel
to which the photocell is attached.
7.2 Troubleshooting the Ground Station
7.2.1 Microphone Troubleshooting
If no response can be seen from the microphones in the
Level Meter
, check the physical
connection of the cables to the front end. Otherwise click on the
Reconnect Signals
icon
and check that the microphone signals are connected to the correct input channels.
7.2.2 Photocell Troubleshooting
If no response can be seen from the photocells in the
Level Meter
:
1) Check that the amber LED on the front of the photocell is illuminated, showing that
the photocell is powered and properly aligned to the reflector. If it is not, bring the
reflector close to the photocell to see if it is a reflector alignment problem.
2) Ensure that the photocell cable has been connected to the correct input on the
Connection Module and the output has been connected to the correct input channel
(5) on the LAN-XI front end. (If the cable is connected correctly the green status LED
around the connector will be illuminated.)
a) Unplug the cable from the Connection Module and then plug it in again, the
LED on the Connection Module connector should blink red and then green for
one second each before flashing red and green and switching off.
b) Trigger the photocell (there is a 10 second hold-off per photocell) and see if
the corresponding LED flashes green for one second and the output BNC
channel 5 LED flashes blue.
3) Check the high-pass filter for the photocell trigger signal channel in the software –
it should be set to
DC
.
a) Press <Ctrl+2> on the keyboard to open the Measurement Organiser.
b) Right-click
Trigger 1
under
Signals
in the Measurement Organiser tree.