Bowens XMS Studio Flash User Manual page 16

User Options
16
Pre-Flash Number (Pn) continued:
6. To exit the Auto mode if no flashes have been detected then either:
a) Select a Pre-flash setting greater than 0.
b) Choose another option and then allow the options display to time out.
The Pre-flash value will be set to 1 (single main flash only).
c) Press the TEST button to exit immediately. The Pre-flash value will be set
to 1 (single main flash only).
Pn = 1 - 10
If the number of Pre-flashes produced by the camera is known then this option allows
this number to be manually set.
Set the value between 1 and 10 for the number of pre-flashes plus one for the main flash
produced by the camera.
Pre-flash Time-frame (Pt)
Use this option to set the Pre-flash Time-frame (in seconds) during which all released
pre-flashes together with the main flash must occur. The default value of 2 seconds is
normally adequate for most purposes. Only increase this setting when the camera pre-
flash procedure is longer than the XMS setting, or decrease it if the main flash occurs
well within the window to reduce the possibility of flashes from other sources being
detected. The time-frame value can be set between 0.5 and 8.0 seconds.
Pre-flash Delay Time (Pd)
Use this option to set the Pre-flash Delay Time (in milliseconds). This is the minimum
permitted time delay between each pre-flash and also the main flash. Any flash in a
sequence of flashes that occurs earlier than this will be ignored and cause the detection
sequence to be restarted. The default value is 2ms and is normally adequate for most
purposes. This setting may sometimes need to be changed for cameras using an LED
Anti Red-Eye function. The Pre-flash delay can be set between 0 and 15ms where 0
allows all flashes to be detected regardless of the delay.
Audible Ready Beep Period (Au)
When more than one XMS is to be used this feature can create a recognisable 'ready'
sound if different settings are used for each unit. This can make it easier to identify that all
XMS units have fired and recycled. Use the options mode to select ' A u' and set the value
between 15 and 90. This value (x 10) indicates the 'ready' beep period ranging from 150
to 900 milliseconds with a default period of 350 milliseconds.