Tektronix 7140 Instruction Manual page 90

Theory of Operation-7104
3-44
DATA ENCODED BV RESISTORS IN
PLUG-IN UNITS
TIME SLOT PULSES TO
I
VERTICAL AND HORIZONTAL
PLUG-INCOMPARTMENTS
I
COLUMN ANALOG DATA IN FROM
PLUG-IN COMPARTMENTS
READOUT MODE
FROM OUTPUT
SIGNALS CIRCUIT
PLUG-IN
INTERFACE \/ ~2
10
8
ROW ANALOG DATA IN FROM PLUG-
I
~ w6
IN COMPARTMENTS
I
TIME SLOT
COUNTER
(CHANNEL COUNTER CODE)
(SINGLE
(DISPLAY SKIP)
SHOT
LOCKOUT)
(SKIP IF DATA
ENCODED IN TS-1)
TIMER
U2126
CONTROL PULSES TO
VERTICAL, HORIZONTAL,
CRT CIRCUIT
DISPLAY
SKIP
GENERATOR
02223, 02229
WORD
TRIGGER
CHANNEL
COUNTER
U2127R
n
6
U2127A
(SKIP IF NO
COLUMN DATA
ENCODED IN
THIS TIME SLOT)
(TS-2 TO
TS-9)
IDENTIFY
NETWORK
3
3
(CHANNEL
COUNTER
CODE)
(IDENTIFY)
CDATAN
SWITCH
U2190
ROW
DATA
SWITCH
Ft ~I U216~---~0
Figure 3-21 . Detailed block diagram of 7104 Readout System (SN 8053267 & Above) .
TIME MULTIPLEXED
ANALOG VOLTAGES
REV NOV 1985