Quantum Data 801GC - Manual (Page 261)

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HRAT Horizontal RATe
Classification: Format parameter setting
Command Syntax: HRAT <frequency in Hz>
Limits: <frequency in Hz> (floating point accepted)
typical min = 1000
typical max = 130000
Query Syntax: HRAT?
Query Response: <frequency in Hz> (floating point returned)
Description: The HRAT command sets the line frequency. Pixel rate is equal
to the product: HTOT times HRAT. Frame rate is equal to the
quotient: HRAT divided by VTOT. Field rate is equal to the
product: SCAN times the frame rate. The HRAT? query returns
the current horizontal frequency setting.
Other Required Cmds: The FMTU command instructs the generator to use the new
setting. The ALLU command updates hardware to the new setting
and redraws the test image.
E x a m p l e s : H R A T 3 2 7 6 8 / / S e t 3 2 . 7 6 8 k H z r a t e i n
/ / b u f f e r
F M T U / / U p d a t e h a r d w a r e t o c u r r e n t
/ / b u f f e r c o n t e n t s
or
H R A T 3 2 . 7 6 8 E 3 / / S e t a 3 2 . 7 6 8 k H z r a t e
F M T U / / U p d a t e h a r d w a r e t o c u r r e n t
/ / b u f f e r c o n t e n t s
HRES Horizontal RESolution
Classification: Format parameter setting
Command Syntax: HRES <pixels>
Limits: <pixels>
min = 16
max depends on VRES and model of generator
Query Syntax: HRES?
Query Response: <pixels>
Description: The HRES command establishes the number of active pixels per
line. The HRES? query returns the current setting of HRES.
Other Required Cmds: The ALLU command updates hardware to the new setting and
redraws the test image.
Example: H R E S 4 8 0 / / S e t 4 8 0 a c t i v e p i x e l s l i n e
/ / i n b u f f e r
A L L U / / C o n f i g u r e h a r d w a r e a n d r e d r a w
/ / i m a g e