Harris Gates Five 994 9204 002, Technical Manual

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Figure J-1. Controller Front Panel
U12 CD4048 H I G H p ow e r l eve l
selection
U14* 74C193 Fine Power Up/Down
counter
U15* 74C193 Fine Power Up/Down
counter
U16* CD4048 F i n e P ow e r U p p e r
Limit detector
U17* CD4048 F i n e P ow e r L ow e r
Limit detector
U18* DA0808 F i n e P ow e r D / A
converter
U19 TLO74 P ow e r C o n t r o l
Summing Amplifier
U20* TLO74 Metering Amplifier
U21 TLO74 Metering Amplifier
U22 LM339 Overload Comparator
U23* 74C74 Sup Volt/Sup Cur Ovld
flip flop
U24* 74C74 U n d e r d r i v e / V S W R
Ovld flip flop
U25 74C74 PDM Kill Timer/Auto
Cutback flip flop
U26 MC14541 PDM Kill Timer
U27* 74C175 Overload Counter
U28* MC14541 O ve r l o a d C o u n t e r
Reset Timer
U29* LM339 PDM Fault Detector A6
U30* LM339 PDM Fault Detector A7
U31* TLO74 PA Fuse detector
U32 MC7812 P o s i t ive 1 2 vo l t
regulator
U33 MC7912 N e g a t iv e 1 2 vo l t
regulator
U38* 74C74 Fine Power Control flip
flop
U39* LM339 PDM Fault Detector A8
U40* LM339 PDM Fault Detector A9
* Not necessary to the operation of the trans-
mitter at any power level.
Chart of Functions
J-4 888-2314-001 Rev.AE: 03-05-2002
WARNING: Disconnect primary power prior to servicing.