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1
1.8
INDICATORS
The 4863/2363 has six front panel LEDs that display the following
conditions:
4863 / 2363
PWR PWR
- Indicates power on.
RDY RDY
- Indicates unit has passed self test.
TALK TX
- Indicates unit has recognized its talk address or
is sending serial data
LSTN RX
- Indicates unit has recognized its listen address
or is receiving serial data.
SRQ SRV
- Indicates unit is generating an SRQ or has sent
a Service Request Message.
ERR ERR
- Indicates unit has detected an command error
and the command was not executed. At power
turn-on, the ERR LED indicates the unit is
uncalibrated. See the CAL:DATE command.
When the 4863 or 2363 is turned on, it performs an internal self test which
takes about 0.3 seconds, during which time the PWR indicator is on. At the
end of the self test, the unit displays its current GPIB or network address by
blinking it address on the front panel LEDs for a half a second. If the 4863
is set for dual secondary addresses, the address is blinked twice. The LED
bit weights are:
RDY TALK/TX LSTN/RX SRQ/SRV ERR
16
8
4
2
1
Any errors found during self test are indicated by a repeated blinking of the
error code pattern. Refer to Table 5-3 for a description of the self test errors
and their possible causes. When all of the LEDs except the ERR LED blink
on for 1 second, the unit is writing configuration parameters to the Flash
memory. When all of the LEDs blink on for 1 second, the unit is initializing
the Flash configuration table to factory defaults. The LED remote header
(J7 on the OEM board versions) provides low true signals that sink up to 15
mA for operating a second set of LEDs.
