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34 RF Switch Command Reference
Chapter 3
Example Closing Channel Path
!Connects COMMON in Bank 02
!to channel 1 in bank 00
[ROUTe:]PATH[:COMMon]?
[ROUTe:]PATH[:COMMon]?<comm>,<channel> returns either a 1 or a 0
indicating whether the specified path is closed (continuity exists) or open
(the signal path is broken). <comm> is a 2-digit number and <channel>
is a 3-digit number.
Parameters
Comments Continuity Results. The output buffer contains an unquoted string
signifying the result: 0 = the specified path does NOT have continuity
or 1 = the specified path DOES have continuity
Command is Hardware Readback. PATH? is a hardware readback
command. It returns the current state of the hardware controlling the
specified path. PATH? does not account for a failed relay.
NOTE Use PATH? to determine if a path is closed. Closing one path may open
another path if both paths use the same relays. See Chapter 1 to determine
if this might happen.
Invalid Values. Invalid <comm> and <channel> values or combinations
may cause one of the following errors:
2001, “Invalid Channel Number” for invalid <channel>
2023, “Invalid Common Bank Number” for invalid <comm>.
2024, “Invalid Source Bank Number” for invalid <channel>
2025, “Invalid common-source combination” for invalid combination
of <comm> and <channel> parameters.
*RST Condition. Channel bb0 connects to COM bb for all 3-to-1
multiplexer banks. This is equivalent to PATH bb,bb0 (where bb is the
<comm>number).
Name Type Range of Values
<comm> numeric 00-05, 10-13, 20-25, 30-33
<channel> numeric 000-002, 010-012, 020-022, 030-032, 040-042,
050-052, 100-102, 110-112, 120-122, 130-132,
200-202, 210-212, 220-222, 230-232, 240-242,
250-252, 300-302, 310-312, 320-322, 330-332