User manual DRAKE DIGITAL MM806

[. . . ] MM806 NTSC Modulation Monitor Instruction Manual ® is a registered trademark of the R. L. Drake Company © Copyright 2002 R. L. Drake Company P/N:3852398B-3-200 Printed in the U. S. A. 2 Caution Statements WARNING: TO PREVENT FIRE OR ELECTRICAL SHOCK DO NOT EXPOSE TO RAIN OR MOISTURE A product and cart combination should be moved with care. Quick stops, excessive force and uneven surfaces may cause the product and cart combination to overturn. [. . . ] This allows easy setup of video and audio levels. The desired off-air VHF or UHF television channel from 2 through 69 or CATV channel from 2 through 125 is selected by a front panel pushwheel switch and associated slide switch. The MM806 provides a standard negative sync video output at a nominal level of 1 Vp-p. Also provided is an audio output signal. Two modulation meters simultaneously provide readout of video modulation percentage and audio deviation percentage of 25 kHz peak deviation. As previously described, channel selection switches are located on the front panel. The RF Input is through an "F" type connector located on the rear panel. The rear panel Video Output is also an "F" type connector. Unbalanced Audio Output is through a rear panel RCA type phono connector. The unit is powered through the attached AC line cord by a nominal 115 VAC, 60 Hz source of power. Specifications RF Input Frequency: 54 - 806 MHz, Off-Air: Channels 2 - 69. VIDEO Output Level: 1. 0 Vp-p nominal, NTSC standard negative sync. Differential Phase: Less than 5 degrees. AUDIO Output Level: 300 mV rms nominal, unbalanced. METERING Video: 0% to 100% AM modulation. Audio: 0% to 100% of 25 kHz peak FM deviation. GENERAL AC Power Input: 115 VAC ±10%, 60 Hz, 10 Watts. Operating Temperature: 00 C to +500 C, ambient. Dimensions: 19" W x 1. 75" H x 4" D. Connectors: RF Input and Video Output are type F. Unbalanced Audio Output is RCA phono. 5 6 Front Panel Controls and Indicators F1 F2 F3 F4 F5 MM806 MODULATION MONITOR MODE CHANNEL VIDEO AUDIO POWER BCTV CATV CATV +100 2 5 % MODULATION 0 20 40 60 80 100 % MODULATION 0 20 40 60 80 100 DEPTH OF MODULATION 100% = 25 kHz PEAK Figure 1 F1 - POWER Indicator Lights when the unit is connected to the required source of AC power. F2 - Mode Switch Sets the type of channel, Off-Air or CATV. The third position sets a leading "1" for CATV channels from 100 through 125. See also Item F3 for setting the channel number. [. . . ] (2) Notify the R. L. DRAKE COMPANY or the nearest authorized service facility, as soon as possible after discovery of a possible defect, of: (a) the model and serial number, (b) the identity of the seller and the approximate date of purchase; and (c) A detailed description of the problem, including details on the electrical connection to associated equipment and the list of such equipment. (3) Deliver the product to the R. L. DRAKE COMPANY or the nearest authorized service facility, or ship the same in its original container or equivalent, fully insured and shipping charges prepaid. Correct maintenance, repair, and use are important to obtain proper performance from this product. Therefore carefully read the Instruction Manual. [. . . ]