Figure 2-7. Power transformer strapping options.

TM 11-6625-166-12

A. GENERATOR AND ANALYZER POWER

OSCILLOSCOPE POWER TRANSFORMER PRIMARY

TRANSFORMER PRIMARY HOOK-UP

HOOKUP

Figure 2-7. Power transformer strapping options.

(2) Position the analyzer in the rack above the generator and secure with screws.

(3) Position the oscilloscope above the analyzer and secure with screws.

(4) Connect the interface cable to the rear of the units as illustrated in figure 2-9. Each plug on the

cable is labeled with a reference designation that corresponds with the appropriate rear panel jack.

Connect as follows:

NOTE

It is important to make proper connections or damage may result.

3A4P2 to 3A4J2

2A3P3 to 2A3J3

1A3P2 to 1A3J2

(5) Connect the power cables to the rear of the units as illustrated in figure 2-9. Three identical power

cables are supplied and may be connected to the units in any order.

Connection is made to the following rear panel jacks:

3A4J1

2A3J4

1A3J4

2-8. External Equipment Connections

The following paragraphs detail the external equipment connections made to the test set for normal operation.

Access to additional logic through the rear panel connectors is provided but not intended for use by the

operator. Internal strapping options that affect the external equipment connections are discussed in chapter 3.

For additional information see the appropriate technical manual.

a. Generator. External equipment connections affecting the generator are made as follows:

(1) For high level polar operation, front or rear access, connect the positive battery lead to 1A3J3-16,

the negative battery lead to 1A3J3-17, and battery common ground to 1A3J3-15. Set the P-N switch on the

front panel to P (polar). Jumper 1A3J3-11 to 1A3J3-12 for front panel access through the DRY CONTACTS

jack. Rear access is provided at 1A3J3-9. The marking sense is reversed by connecting the negative battery

lead to 1A3J3-16 and the positive battery lead to 1A3J3-17 or by changing the internal strapping on assembly

1A2A2.

(2) For high level neutral operation front panel access, set the P-N switch on the front panel to N

(neutral) and jumper 1A3J3-11 to 1A3J3-12. For rear panel access, remove the jumper from 1A3J3-11 and

1A3J3-12 and connect the neutral loop to these two pins. The output is available at the DRY CONTACTS jack

in both front and rear access configurations.

(3) Externally stepped character release operation is accomplished by setting the CHARACTER

RELEASE switch to EXT. and connecting a -60-volt dc step pulse at 2 ma to 1A3J3-6. The ground connection

is made to 1A3J3-18. The repetition rate of the pulse must be related to the character length for the selected

baud rate. For example) to step a signal at 50 baud requires that the minimum time between step pulses be

140 milliseconds.

2-7

Index