HP 54645A, User'S And Service Manual

Page: 270 / 301

Option 005 General Performance Characteristics
Video Standards NTSC, PAL, PAL-M, SECAM, Generic
Video Trigger Modes:
Line Field 1, Field 2, Alternate Fields
All Lines
Field 1
Defined as that field with the 3 lines of vertical sync starting at line 4.
Is actually color field 1 or color field 3.
Field 2 Defined as that field with the 3 lines of vertical sync starting at the
midpoint of line 3. Is actually color field 2 or color field 4.
All Fields
Option 005 Trigger System
Internal trigger
Sensitivity Performance remains unchanged
Coupling Performance remains unchanged
Modes Performance remains unchanged
Holdoff Performance remains unchanged
TV triggering Available on channels 1 and 2 only
TV line and field 0.5 division of composite sync for stable display
External trigger Performance remains unchanged
Vertical output
Connector Rear panel BNC (f)
Source Impedance 50
Ω
(nominal)
Signal source Selected by internal trigger source
Amplitude Approximately 90 mV
p-p
into 50
Ω
for a full-scale display at full
bandwidth of the oscilloscope
TV Trigger output Active only in TV mode
Connector Rear panel BNC (f)
Amplitude TTL
Pulse width A function of TV trigger mode, Minimum approximately 5
µ
s in
line modes to the width of a field in field modes
Delay from Vertical
Output Approximately 400 ns
Performance Characteristics
Option 005 General Performance Characteristics
9-11