Agilent Technologies 85330A service manual To Close Any Switch in the System to select a channel

More about Switch Addresses

Manual Operation

To Close Any Switch in the System (to select a channel)

To Close Any Switch in the System (to select a channel)

To manually close a switch (to select a channel):

1. Press:

[Select Instr] {85330A}

2.If the {CLOSE} softkey does not appear, press:

[Prev Menu] (until it does)

3.Press:

{CLOSE}

a. If the switch you want to close is connected to PORT 1, press

{PORT_1}

b. If the switch you want to close is connected to PORT 2, press

{PORT_2}

4.Enter the switch address using the numeric keypad. In a standard system, simply enter the channel number (1, 2, 3, or 4), and press [Return].

The “switch address” is a concatenation of the Switch Control Unit (SCU) address (set to 0 at the factory) with the channel number (in “standard” systems this number is 1, 2, 3, or 4).

If you just enter the channel number (1, 2, 3, or 4), the multiple channel controller will assume that the SCU address is still at the factory default (0). Changing SCU address requires DIP switch changes inside the SCU, and is not necessary in standard systems. To select switch 1 (channel 1), just press [1] [Return].

In custom systems with many switches, a different SCU address might be used in part of the switch tree. Here are some example switch addresses for complex switch trees:

101 (SCU address 1, channel 01)

212 (SCU address 2, channel 12)

312 (SCU address 3, channel 12)

Notice in the first example (101) that a two digit channel number (01) was required. When the SCU address is set to 1, 2 or 3, you must enter a two-digit channel number – even for channels 1 through 9.

85330A Multiple Channel Controller 5-5