For Satellite Antennas, Safety CHECK-OUT

FOR SATELLITE ANTENNAS:

SAT-A55/B55

Input Frequency

Output Frequency

Output Connector

Power Consumption

Supply Voltage

Dimensions (w/h/d)

Weight

12.2- 12.7 GHz

950 - 1450 MHz

F-Type Female

3.0 W max.

DC + 10.5 - 14.0 V for RHCP DC + 15.5 - 21.0 V for LHCP

185/8 x 31 x 185/16 inches

473 x 787 x 643 mm

8 lbs 6 oz (3.8 kg)

Supplied	Weatherboot 2pcs
Accessories	Signal Seeker 1pc
	Snap-in Clip (dual type) 1pc
	Bolt for Ground Terminal 1pc
	Bolt for LNB Support Arm 2pcs
Optional	Installation Kit ANJ-DS2
Accessories	Amplifier EAC-DA1
	Diplexer EAC-DD1
	Voltage Switch ECA-DV2
	Multi-Room A/V
	Distribution System MDR-D1
	Coaxial Cable 25'	SAK-C25
	Coaxial Cable 75'	SAK-C75
	Flat Cable SAK-F1

SAFETY CHECK-OUT

1.Check the area of your repair for unsoldered or poorly- soldered connections. Check the entire board surface for solder splashes and bridges.

2.Check the interboard wiring to ensure that no wires are “pinched” or contact high-wattage resistors.

3.Check that all control knobs, shields, covers, ground straps, and mounting hardware have been replaced. Be absolutely certain that you have replaced all the insulators.

4.Look for unauthorized replacement parts, particularly transistors, that were installed during a previous repair. Point them out to the customer and recommend their replacement.

LEAKAGE TEST

The AC leakage from any exposed metal part to earth ground and from all exposed metal parts to any exposed metal part having a return to chassis, must not exceed 0.5 mA (500 microamperes). Leakage current can be mea- sured by any one of three methods.

1.A commercial leakage tester, such as the Simpson 229 or RCA WT-540A. Follow the manufacturers’ instructions to use these instruments.

2.A battery-operated AC milliammeter. The Data Precision 245 digital multimeter is suitable for this job.

3.Measuring the voltage drop across a resistor by means of a VOM or battery-operated AC voltmeter. The “limit” indication is 0.75 V, so analog meters must have an accurate low-voltage scale. The Simpson 250 and Sanwa SH-63Trd are examples of passive VOMs that are suitable. Nearly all battery operated digital multimeters that have a 2 VAC range are suitable. (See Figure 1)

5.Look for parts which, though functioning, show obvious signs of deterioration. Point them out to the customer and recommend their replacement.

6.Check the line cords for cracks and abrasion. Recom- mend the replacement of any such line cord to the customer.

7.Check the B+ and HV to see if they are specified values. Make sure your instruments are accurate; be suspicious of your HV meter if sets always have low HV.

8.Check the antenna terminals, metal trim, “metallized” knobs, screws, and all other exposed metal parts for AC leakage using one of the methods listed.

Figure 1. Using an AC voltmeter to check AC leakage.

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