VTI Instruments EX1000A, User Manual

Page: 264 / 320

VTI Instruments Corp.
264 EX10xxA/RX1032/EX1044 Function Calls
vtex10xxA_set_vtb_output
F
UNCTION
P
ROTOTYPE
ViStatus vtex10xxA_set_vtb_output(ViSession vi , ViInt32 vtb_out );
F
UNCTION
P
ARAMETERS
vi = contains a session handle to the instrument. This handle is obtained by the function and remains valid until the
session is closed.
vtb_out = the value that represents the desired state of the 8-bit port. Within the 8-bit field, the MSB corresponds to
LXI Trigger Bus (VTB) channel 7 and the LSB corresponds to LXI Trigger Bus (VTB) channel 0. Valid input
values: 0 through 255 (decimal), 0x00 through 0xFF (hexadecimal).
D
ATA
I
TEM
R
ESET
V
ALUE
vtb_out = 0
D
ESCRIPTION
This function sets the static level that each channel of the trigger bus will assume if enabled. Enabling is done with
the vtex10xxA_set_vtb_output_enable function.
E
XAMPLE
// set VTB bit 7 (high) and VTB bit 6 (low)
vtex10xxA_set_vtb_output(vi, 0x80);
// enable them as outputs
vtex10xxA_set_vtb_output_enable(vi, 0xC0);