AMETEK Lx Series II Programming Manual - Manual (Page 180)

Programming Manual Lx \ Ls Series II
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following example will select the 270 range from the 135/270 range pair with an upper amplitude limit
of 210 volts.
RNG210
To program External Synchronization (SNC) (optional)
The SNC header is used with the EXT argument to synchronize the phase A output to an external
sync input. The phase A output will be phase referenced to the sync input with the displacement
equal to the PHZ A value. The following ASCII string will program the phase A output to 0 degree
relative to the external sync input and select the external sync mode.
PHZA0 SNC EXT
Sending the ASCII string SNC INT will disable the sync input.
To program External Clock (CLK) (optional)
The CLK header has an argument of either EXT or INT. The CLK header with the EXT argument
will make one AC Power System a slave to another system. The slave will operate at the same
frequency as the master. Phase A of the slave will be related to phase A of the master by the PHZ A
value of the slave.
NOTE The clock option is only available if the associated power systems have the -LKM option.
The following ASCII string will enable the CLOCK and LOCK inputs to the associated slave AC
Power System:
CLK EXT
NOTE If there is no signal at the CLOCK input at the rear panel of the associated power system,
the output will go to zero volts.
The ASCII string CLK INT will return the slave AC Power System to its programmed frequency.
To Trigger an operation (TRG)
The TRG header has no argument. When the TRG mnemonic is included in a setup string, it will
delay execution of the string until the bus controller sends the GPIB Device Trigger message. The
TRG header may also be used to trigger register operations by including the TRG header with the
string used to recall a register. The following example will delay execution of the program in register
1 until an IEEE-488 Device Trigger is received:
REC1 TRG
The Trigger mode may also be enabled in the local mode by programming setup parameters without
depressing the ENT key. The setup values will then be programmed in the remote mode when the
Device Trigger is received.
To program the output Waveform (WVF) (Optional)
The header WVF with the optional A, B or C extension is used to identify the following argument as
the Sine Wave (SNW) or Square Wave (SQW) function of the Waveform. The following example will
program all outputs to the square wave function.
WVF SQW
The following example will program only output B to the square wave function:
WVFB SQW
To Open (OPN) and Close (CLS) the output relay
The OPN and CLS headers open and close the output relays in the power source. There is no
argument associated with these headers. When the OPN or CLS headers is received the output
voltage will be programmed to zero volts for 50 milliseconds before the output relays open or close.