CHAPTER 1 GENERAL INFORMATION - TM-11-5805-622-14-10008

T. O. 31W2-4-266-2

TM 11-5805-622-14/1

CHAPTER 1

GENERAL INFORMATION

1-1. GENERAL.

1-9. BAY HEAD. The top shelf of the Orderwire-

Delay Equalizer bay contains the termination points

1-2. This chapter contains descriptions and data for

for all connections in and out of the orderwire system,

the Orderwire-Delay Equalizer Bay type TF1781

(Figures 1-1 and 1-2). This bay is used at two sites

1-10. PILOT AMPLIFIER. The Pilot Amplifier

of the IJCS Communications System, Camp McCauley

TF1772 located in the top shelf of-the Orderwire-

in Taiwan and Hamby Field, Okinawa, therefore,

Delay Equalizer Bay receives a 96 kHz synchroniza-

two configurations are described herein to reflect

tion signal from the subsystem interface. This sig-

differences between terminal A and B installations.

nal is raised by the amplifier for insertion into the

For differentiation purposes the A configuration shall

carrier equipment in the CF Terminal Bay.

be described as TF1781A and the B configuration

TF1781B.

1-11. INTERFACE MATCHING UNIT. The Inter-

face Matching Unit TF1791 receives the 0.3 to 3.4

1-3. DESCRIPTION AND PURPOSE,

kHz voice signal from the Orderwire Terminal Set

or the demodulated signal from the Channel Modem.

1-4. The Orderwire-Delay Equalizer Bay serves

The VF signal from the terminal set is fed to a

several functions in the processing of the signals in

resistive network to match the 600 ohm line imped-

the CF Cable Subsystem. The circuitry required

ance. The incoming demodulated receive signal from

for establishing an out-of-band orderwire channel is

the channel modem is also fed to a resistive network

contained within the bay as well as a 96 kHz synchron-

for matching to the Orderwire Terminal Set.

ization frequency amplifier module and the delay

equalization circuits for the message baseband.

1-12. CHANNEL MODEM. The orderwire Channel

Modem TF3012. la contains the circuitry necessary

1-5. The Orderwire-Delay Equalizer Bay is housed

for modulation and demodulation of th

the 16 kHz carrier s

in an electrical equipment cabinet which contains

shelf mounted components. The distribution of these

brids and amplifiers

and transmit the ord

components is illustrated in Figures 1-1 and 1-2.

Table 1-3 lists the major components and identifier

1-13.

the differences in configuration between terminals A

and B

1-6. The orderwire components of the bay consist of

1-14.

1-7.

1-16.

1-8.

1-1