Quantum Data 801GF Spezifikationen PDF herunterladen (Seite 33)

Publication # 68-00155 (Rev: B 26-JULY-95) Page 33

VRES <lines>

Limits: <lines>

min = 1 (when SCAN = 1) or

2 (when SCAN = 2)

max = the lesser of 1024 or

VTOT-1 (when SCAN = 1) or

VTOT-3 (when SCAN = 2)

Must be an even number when SCAN = 2.

Description: The VRES command establishes the number of active lines per frame. The VRES? query

returns the current setting of VRES.

VSIZ <physical size>

Limits: <physical size> = positive value (floating point accepted)

Description: (context sensitive - see FMTB and FMTE) The VSIZ command establishes the vertical

physical size of the image on the display. Units expected (or returned) vary according to the

last mode set with USIZ command. The VSIZ command is context sensitive and must appear

between begin and end commands: FMTB and FMTE. The VSIZ? query returns the current

setting of VSIZ.

❖ Make sure that the USIZ parameter is properly set before using the VSIZ command.

Changing the USIZ setting after entering VSIZ will convert the size to match the new

unit of measure.

VSPD <lines>

Limits: <lines>

min =

0 (when SCAN = 1) or

1 (when SCAN = 2)

max =

VTOT-VRES-VSPW (when SCAN = 1) or

[(VTOT-VRES-1) /2]-VSPW (when SCAN = 2)

Description: The VSPD command establishes the delay between leading edge of blanking in the first (or

even) field and the leading edge of the vertical sync pulse. When interlacing, delay between

end of video and leading edge of vertical sync before second (or odd) field is 0.5 line shorter

than the whole-line delay specified. The VSPD? query returns the current setting of the

vertical sync pulse delay.

VSPG <mode>

Limits: <mode>

0 = OFF

1 = ON

Description: The VSPG command enables and disables all of the digital vertical sync outputs. If digital

composite sync is selected (see SSST command) and VSPG=1, then composite sync is output

on both the VS-BNC and the VS pin of the VGA D-sub connector in addition to the CS pins of

the MAC & PGA D-sub connectors. The VSPG? query returns the current mode of VSPG.

VSPP <polarity>

Limits: <polarity>

0 = active-low (negative going pulse)

1 = active-high (positive going pulse)

Description: The VSPP command establishes the logic sense of the digital vertical sync outputs. Setting

polarity to 1 causes the leading edge of vertical sync to be a low-to-high transition. Setting

polarity to 0 causes the leading edge of vertical sync to be a high-to-low transition. The

VSPP? query returns the current polarity of VSPP.

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