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2. Unit Description
2.1. Front Panel
¬
CLEAR: Restarts the APS operating program without changing user-selected parameter
settings or breaking port connections.
ON: Lights when AC Power is applied.
® SET: Used to Initialize the APS to defaults specified by the SetUp Switches. To
initialize, press and hold both the SET and CLEAR buttons, release only the CLEAR
button, and then release the SET button.
Notes:
• During initialization, all port LEDs will flash ON for approximately one half
second.
• During initialization, all command-selected parameters will be cleared, and the
APS will revert to the default parameters specified by the SetUp Switches.
¯ RDY: Flashes to indicate unit is operational.
° ACTIVITY LEDs: Light when corresponding port is receiving data. The APS-16
includes sixteen Activity LEDs, the APS-8 includes eight Activity LEDs, and the APS-4
includes four Activity LEDs.
2-1
Figure 2.1: Instrument Front Panel (Model APS-16 Shown)