TABLE 1-7. BTS SWITCH INFORMATION (Continued)

TABLE 1-7. BTS SWITCH INFORMATION (Continued)

SWITCH

FUNCTION

1A3/1A4S5

PRI - Three decade thumbwheel switch - Sets the PRI from 300

to 999 microseconds in 1 microsecond steps.

1A3/1A4S6

CS MOD DEPTH - Ten-position rotary switch - Sets the depth

of CS modulation to 0, 1, 2, 3, 6, 9, 12, 15, 20 or

25 dB.

PRI SELECT - Five position rotary switch - Selects one of

1A3/1A4S7

three preset pulse repetition intervals A-W/A-F/El

or a VAR PRI set by PRI switch S5.

SYNC (NORMAL/PATTERN) - Two position toggle switch (located

1A3/1A4S8

inside the 1A3/1A4 chassis). Provides either pulse

sync or pattern sync to the SYNC PULSE Jack (J4)

on the front panel.

1-41