
SSR/CHS/001
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Status LEDs dim in conjunction with the LCD display brightness. See “External control of the screen brightness” on
page 20.
Front panel display
The date, time, status, and utilization of the CompactFlash card are displayed on the front of the recorder (see the following
figure).
Figure 4: Display of the SSR/CHS/001
The housing of the SSR/CHS/001 is designed to provide a wide viewing angle for the display.
Figure 5: Wide viewing angle
When the SSR/CHS/001 is installed but is not recording data, the data rate seen by the recorder is shown on the bottom right of
the display as a percentage of the 40 Mbps nominal logging speed (see the following figure). For example, if the recorder is
receiving 30 Mbps, including data from modules and data from Ethernet, the display shows 75%. If the module is receiving 70
Mbps, the display shows 175%; since this is greater than 100%, some incoming data would be lost if recording was to be
started.
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This calculation is based purely on the data rate and assumes that the packet size is sufficiently large to achieve
40 Mbps logging speed.
Figure 6: Display showing percentage of nominal logging speed
If an error prevents the SSR/CHS/001 from recording, for example if no CompactFlash card is available, then the incoming data
rate is not measured. When the data rate cannot be measured or is less than 1%, it is not displayed.
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The LCD is not damaged by exceeding the temperatures stated in “General specifications” on page 2. However, at
extreme temperatures, for example below -30° or above 70°, the visibility of the display is reduced.
Understanding power consumption in the SSR/CHS/001
An empty SSR/CHS/001 typically consumes 8.4W. An SSR/CHS/001 unloaded, analog bridge module on average takes 150 mA
on the 5V line (150 mA x 5V = 0.75W), 50 mA on the ±7V lines ((50 mA x 7) x 2 = 0.7W) and 60 mA on the ±12V lines ((60 mA x 12)
Pilot
Pilot
DISPLAY