User Manual

Technalogix Ltd. TM-100 Modulator
7
NTSC Video Characteristics
Input Level to modulator (for 87.5%
modulation)
1.0 V
PP
Differential Phase (at 87.5% modulation) ±2 Degrees
Differential Gain (at 87.5% modulation) 2%
Group Delay < ±40 nS
Video Group Delay Pre-emphasis Conforms to IC/FCC specifications
K-Factor 1.9% for 2T Pulse
Hum and Noise > 60 dB below rated power
Aural Characteristics
Input: 50 Hz – 15 KHz 0 dBm (0.8V)
Impedance 600 ohms, balanced
Frequency Response +/- 1.0 dB
Frequency Tolerance, +/- 500 Hz 4.5 MHz
Frequency Deviation +/- 25 KHz
Harmonic Distortion 1% max
Preemphasis (mono) 75 µs
Internally Defeatable
IF Section
Output Impedance 75 ohms, unbalanced
Video IF level + 37 dBmV, +97 dBµV
Audio IF Level +22 dBmV
Adjustable +82 dBµV
Return Loss > 14 dB
IF Frequency, Video Carrier 45.75 MHz
IF Frequency, Audio Carrier 41.25 MHz
Video Sound Spacing + 4.5 MHz
Vestigial side-band width 0.05 MHz
Second IF Frequency 945.75 MHz
Physical Characteristics
Power Requirements 100-130, 210-230 VAC, 50/60 Hz
Operating Temperature
0 - 50°C
Weight 12 lbs
Dimensions (modulator only) W-19", D-14 ", H 1.75”, 1U-high