Tektronix 1740A/1750A - Manual (Page 78)

Using the Menus
1740A/1750A Series Waveform/Vector Monitor User Manual
3-23
REMOTE
H The currently operating software version is dis-
played in the lower right corner of the screen.
H Three menu choices are available. REM INPUT
configures rear-panel REMOTE connector pin 3 to
accept External Horizontal or Staircase input.
STAIRCASE configures the staircase input for 3-step
(RGB) or 4-step (YRGB) signal. BAUD configures
the data transmission rate for the rear-panel RS232
connector for 1200, 4800, or 9600 baud.
H The remote input is enabled by a TTL low or switch
to ground. See page B-1.
REFERENCE (Dual Standard Only)
H NTSC external reference and PAL external refer-
ence can be set to EXT, A, A1, A2, A3, B, B1, B2,
or B3 .
H When The front-panel
REF EXT is selected (LED
lights) the instrument uses the rear-panel EXT REF
input. Dual-standard monitors can be configured for
two external references; one for NTSC and one for
PAL. Any of the input channels can be designated
as a second external reference by selecting that input
channel as the
NTSC EXT REF or PAL EXT REF
through this menu.
H If NTSC and PAL external references are configured
the same, the monitor automatically operates in the
same television standard as the
EXT REF input.
When NTSC and PAL external references are
configured differently, the monitor’s operating
standard is determined by the standard of the dis-
played video instead of the
EXT REF input. Once the
operating standard is determined, the monitor
immediately switches to the appropriate input for
reference timing.