WFM 1740A
Tektronix
WFM 1740A
Tektronix 1740 Waveform/Vectorscope
This composite analog waveform/vector monitor features a straightforward operator interface, allowing the operator to take immediate advantage of the instrument's extensive feature set. Each operating mode provides a full set of operating controls, clearly labeled and within easy reach. Key controls are always available, with bezel buttons and knobs identified by intuitive on-screen labels.
Connection of the instrument into the system is easy. Eight loop-through video inputs allow direct connection of the monitor into different points of the system without requiring an external routing switcher.
Connection of the instrument into the system is easy. Eight loop-through video inputs allow direct connection of the monitor into different points of the system without requiring an external routing switcher.
Product Weight: 8 lbs
Dimensions: 18.13"L x 8.5"W x 5.25"H
Technical Tools
PDF Documents
Manufacturer Specs
Waveform Vertical Deflection
Deflection Factor: 1.0 V (0.2 V x5 gain, 0.1 V x10 gain) input displayed within 1% of 140 IRE (1.00 V) graticule.
Overscan: <7 mV variation in base line of chroma when positioned anywhere between sync tip and 100% white.
Variable Gain Range: 0.2x to 1.4x
DC Offset Between Channels: <1 IRE (7 mV)
Maximum Operating Signal Input Voltage: -1.8 V to +2.2 V, DC + peak AC
Absolute Maximum Input Voltage: -8.5 V to +8.5 V, DC + peak AC
Signal Input Impedance: ≥20 kilΩ
75 Ω Loopthrough Return Loss: ≥40 dB to 6 MHz
Frequency Response
Flat: Within ± 2% to 10 MHz (x1 Gain)
Luminance filter gain of flat response: Within 1% at 50 kHz, <3 dB attenuation at 1 MHz, ≥40 dB attenuation at Fsc.
Chrominance filter, Bandwidth 1.5 MHz ± 0.3 MHz: Gain within 1% of flat response at Fsc, attenuation >25 dB at 2 x Fsc.
Differentiated step filter: >40 dB attenuation at Fsc.
Transient Response
Preshoot, overshoot, ringing, field rate tilt, line rate tilt, differential gain: 1% or better
Pulse-to-bar Ratio: 0.99:1 to 1.01:1
Pix Out
Gain unity: ±3%
Frequency response: ±3% to 6 MHz when terminated in 75Ω
Differential gain: ≤1%
Differential phase: ≤1°
Return Loss: >30 dB to 6 MHz
DC Restorer: Slow ≤10%, fast ≥95% attenuation at 50 Hz and 60 Hz
Offset error: <1 IRE (7 mV)
Fast settling time: ≤6 video lines
Blanking shift with 10% to 90% APL change: ≤1 IRE (7 mV)
Blanking shift with presence or absence of burst: ≤1 IRE (7 mV)
Waveform Horizontal Deflection
Sweep: Synchronization triggered by Horiz and Vert sync pulses. Freeruns without input.
Timing Accuracy 1 Line, 5 μs/div: ±1%
2 Line, 10 μs/div: ±1%
Linearity 1 or 2 Line: ±1%
Magnified Sweep Accuracy: 1 line x25
0.2 μS/div: ±1%; 2 line x10
1.0 μS/div: ±1%
Magnified Sweep Linearity, 1 or 2 Line Magnified: ±1%. Horizontal position range, any portion of the synchronized sweep can be positioned on screen in any sweep mode.
External Horizontal 0.5 V/div: ±2%
RGB/YRGB: Staircase input amplitude 12 Vp-p maximum, DC + peak AC not to exceed -12 V or +12 V, 10 V = 9 div ± 1 div display. Field or line rate front panel selectable.
Cursor Signals
Waveform Mode Accuracy
Voltage: ±0.5%
Timing: ±0.5% for line rate sweeps
Vector Mode Accuracy
Amplitude: ±0.5 IRE (0.5%)
Phase: ±0.5°
Calibrator Signals
Waveform Squarewave
Amplitude: 1.0 V ±0.5%.
Frequency: 100 kHz ±0.1%.
Waveform Sinewave
Amplitude: 1.0 V ±0.5%.
Frequency: Nominal subcarrier for standard in use.
Vector Mode
Input Requirements: 1 Vp-p ±6 dB composite video signal or black burst.
Chrominance Bandwidth: 1 MHz ±200 kHz.
Display: Phase accuracy within 1.25°. Gain accuracy within 2.5%. Quadrature phasing within 0.5°.
Subcarrier Regenerator
Pull-in range: NTSC: ±50 Hz. PAL: ±10 Hz
Pull-in time: ≤2 S
Phase shift with ±50 Hz NTSC or ±10 Hz PAL Fsc change: ≤2°
Phase shift with ±6 dB burst amplitude change: ≤2°
Phase shift with video input change: ≤1°
Phase shift with variable gain +3 dB to -6 dB: ≤0.5°
Burst jitter: ≤0.5° RMS
Clamp stability: ≤1/64 inch (0.4mm)
Phase control range: 360° continuous rotation
Differential gain: ≤1%
Differential phase: ≤1°
Audio Mode
Full Scale: 0, 4, 8 and 12 dBm, menu selectable
Full Scale Accuracy: ±0.5 dB at 1 kHz
Maximum Input Voltage: ±8 Vp-p
Bandwidth: -3 dB, 200 kHz
X&Y Input Phase Matching: <1 degree at 20 kHz
Input Impedance: 20 kilΩ nominal
Signals may be displayed in combination modes
Time Code Mode
Input: Longitudinal timecode, differential
Full Scale: 0, 4, 8, and 12 dBm, menu selectable
Maximum Input Voltage: ±8 Vp-p
Input Impedance: >20 kilΩ
CRT Display
CRT Viewing Area: 80 mm x 100 mm
Accelerating Potential: Nominally 13.75 kV
Trace Rotation Range: >1° from horizontal
Graticule: Internal with variable illumination
Power Source
Mains Voltage Range: 90 to 250 VAC
Mains Frequency Range: 50 or 60 Hz
Power Consumption: 110 VA maximum
Environmental Characteristics
Temperature
Nonoperating: -67°F to +167°F
Operating: 32°F to +122°F
Altitude
Nonoperating: To 50,000 ft.
Operating: To 6,500 ft.
Vibration: Meets the sine vibration test condition requirements for environmental class 3 of military specification MIL-T-28800D.
Shock (Nonoperating): 50 g, 1/2 sine, 11 ms duration, 3 shocks/surface
Transportation: Qualified under NSTC test procedure 1A, category II (24 in. drop).
Humidity: Will operate at 95% relative humidity for up to 5 days. Do not operate with visible moisture on the circuit boards.
Certifications
EMC: Certified to the EMC Directive 89/336/EEC
Safety
Approved to: UL1244, CSA231.
Complies with: EN61010-1, IEC61010-1.
Deflection Factor: 1.0 V (0.2 V x5 gain, 0.1 V x10 gain) input displayed within 1% of 140 IRE (1.00 V) graticule.
Overscan: <7 mV variation in base line of chroma when positioned anywhere between sync tip and 100% white.
Variable Gain Range: 0.2x to 1.4x
DC Offset Between Channels: <1 IRE (7 mV)
Maximum Operating Signal Input Voltage: -1.8 V to +2.2 V, DC + peak AC
Absolute Maximum Input Voltage: -8.5 V to +8.5 V, DC + peak AC
Signal Input Impedance: ≥20 kilΩ
75 Ω Loopthrough Return Loss: ≥40 dB to 6 MHz
Frequency Response
Flat: Within ± 2% to 10 MHz (x1 Gain)
Luminance filter gain of flat response: Within 1% at 50 kHz, <3 dB attenuation at 1 MHz, ≥40 dB attenuation at Fsc.
Chrominance filter, Bandwidth 1.5 MHz ± 0.3 MHz: Gain within 1% of flat response at Fsc, attenuation >25 dB at 2 x Fsc.
Differentiated step filter: >40 dB attenuation at Fsc.
Transient Response
Preshoot, overshoot, ringing, field rate tilt, line rate tilt, differential gain: 1% or better
Pulse-to-bar Ratio: 0.99:1 to 1.01:1
Pix Out
Gain unity: ±3%
Frequency response: ±3% to 6 MHz when terminated in 75Ω
Differential gain: ≤1%
Differential phase: ≤1°
Return Loss: >30 dB to 6 MHz
DC Restorer: Slow ≤10%, fast ≥95% attenuation at 50 Hz and 60 Hz
Offset error: <1 IRE (7 mV)
Fast settling time: ≤6 video lines
Blanking shift with 10% to 90% APL change: ≤1 IRE (7 mV)
Blanking shift with presence or absence of burst: ≤1 IRE (7 mV)
Waveform Horizontal Deflection
Sweep: Synchronization triggered by Horiz and Vert sync pulses. Freeruns without input.
Timing Accuracy 1 Line, 5 μs/div: ±1%
2 Line, 10 μs/div: ±1%
Linearity 1 or 2 Line: ±1%
Magnified Sweep Accuracy: 1 line x25
0.2 μS/div: ±1%; 2 line x10
1.0 μS/div: ±1%
Magnified Sweep Linearity, 1 or 2 Line Magnified: ±1%. Horizontal position range, any portion of the synchronized sweep can be positioned on screen in any sweep mode.
External Horizontal 0.5 V/div: ±2%
RGB/YRGB: Staircase input amplitude 12 Vp-p maximum, DC + peak AC not to exceed -12 V or +12 V, 10 V = 9 div ± 1 div display. Field or line rate front panel selectable.
Cursor Signals
Waveform Mode Accuracy
Voltage: ±0.5%
Timing: ±0.5% for line rate sweeps
Vector Mode Accuracy
Amplitude: ±0.5 IRE (0.5%)
Phase: ±0.5°
Calibrator Signals
Waveform Squarewave
Amplitude: 1.0 V ±0.5%.
Frequency: 100 kHz ±0.1%.
Waveform Sinewave
Amplitude: 1.0 V ±0.5%.
Frequency: Nominal subcarrier for standard in use.
Vector Mode
Input Requirements: 1 Vp-p ±6 dB composite video signal or black burst.
Chrominance Bandwidth: 1 MHz ±200 kHz.
Display: Phase accuracy within 1.25°. Gain accuracy within 2.5%. Quadrature phasing within 0.5°.
Subcarrier Regenerator
Pull-in range: NTSC: ±50 Hz. PAL: ±10 Hz
Pull-in time: ≤2 S
Phase shift with ±50 Hz NTSC or ±10 Hz PAL Fsc change: ≤2°
Phase shift with ±6 dB burst amplitude change: ≤2°
Phase shift with video input change: ≤1°
Phase shift with variable gain +3 dB to -6 dB: ≤0.5°
Burst jitter: ≤0.5° RMS
Clamp stability: ≤1/64 inch (0.4mm)
Phase control range: 360° continuous rotation
Differential gain: ≤1%
Differential phase: ≤1°
Audio Mode
Full Scale: 0, 4, 8 and 12 dBm, menu selectable
Full Scale Accuracy: ±0.5 dB at 1 kHz
Maximum Input Voltage: ±8 Vp-p
Bandwidth: -3 dB, 200 kHz
X&Y Input Phase Matching: <1 degree at 20 kHz
Input Impedance: 20 kilΩ nominal
Signals may be displayed in combination modes
Time Code Mode
Input: Longitudinal timecode, differential
Full Scale: 0, 4, 8, and 12 dBm, menu selectable
Maximum Input Voltage: ±8 Vp-p
Input Impedance: >20 kilΩ
CRT Display
CRT Viewing Area: 80 mm x 100 mm
Accelerating Potential: Nominally 13.75 kV
Trace Rotation Range: >1° from horizontal
Graticule: Internal with variable illumination
Power Source
Mains Voltage Range: 90 to 250 VAC
Mains Frequency Range: 50 or 60 Hz
Power Consumption: 110 VA maximum
Environmental Characteristics
Temperature
Nonoperating: -67°F to +167°F
Operating: 32°F to +122°F
Altitude
Nonoperating: To 50,000 ft.
Operating: To 6,500 ft.
Vibration: Meets the sine vibration test condition requirements for environmental class 3 of military specification MIL-T-28800D.
Shock (Nonoperating): 50 g, 1/2 sine, 11 ms duration, 3 shocks/surface
Transportation: Qualified under NSTC test procedure 1A, category II (24 in. drop).
Humidity: Will operate at 95% relative humidity for up to 5 days. Do not operate with visible moisture on the circuit boards.
Certifications
EMC: Certified to the EMC Directive 89/336/EEC
Safety
Approved to: UL1244, CSA231.
Complies with: EN61010-1, IEC61010-1.