Chapter 4, FRONT AND REAR PANELS
4-2
An IP address consists of four numbers, each known as an octet and each of which
can range from 0 t0 255. The model 7230 displays these numbers by using red and
green flashes of the Status indicator, as follows. A long red flash indicates the start
and end of the address, short red flashes are digit separators, and the number of green
flashes equals the digit value, except that 10 green flashes equates to a value of 0
Step No. Status Color Description
1 Long Red Start of 1st octet
2 Green Flashes Octet 1, digit 1
3 Short Red End of 1st digit, start of 2nd
4 Green Flashes Octet 1, digit 2
5 Short Red End of 2nd digit, start of 3rd
6 Green Flashes Octet 1, digit 3
7 Short Red End of 1st octet, start of 2nd
8 Green Flashes Octet 2, digit 1
9 Short Red End of 1st digit, start of 2nd
10 Green Flashes Octet 2, digit 2
11 Short Red End of 2nd digit, start of 3rd
12 Green Flashes Octet 2, digit 3
13 Short Red End of 2nd octet, start of 3rd
14 Green Flashes Octet 3, digit 1
15 Short Red End of 1st digit, start of 2nd
16 Green Flashes Octet 3, digit 2
17 Short Red End of 2nd digit, start of 3rd
18 Green Flashes Octet 3, digit 3
19 Short Red End of 3rd octet, start of 4th
20 Green Flashes Octet 4, digit 1
21 Short Red End of 1st digit, start of 2nd
22 Green Flashes Octet 4, digit 2
23 Short Red End of 2nd digit, start of 3rd
24 Green Flashes Octet 4, digit 3
25 Long Red End of 4th octet and address
If one loses track of the number of flashes, or miscounts them, then the display
process can be restarted by changing the setting of the rear panel Config 3 switch, as
described in section 4.2.07 It can also be restarted by cycling the instrument’s power,
but if using an auto IP allocated address, or if the DHCP server takes time to allocate
an address, then it cannot begin until the new IP address has been determined, so it
will take longer.
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