Tektronix 491 - Page 164

Reeistors (corrtj
Tektronix Serial/Madel No.
Ckt. No.
Part No. Eff Disc
Description
RI 197
315-0124-00
120 kCt
y4 w
5%
RI 198
315-0302-00
3 k~
y4 w
5%
R1199 315-0205-00
2 M$2
y4 w 57”
1 a Pad
R50
119-009140
Resistive “T” Network (includes J50, J51, J52)
R60 119-0066-00
Attenuator Pad
Switches
Wired or Unwired
SW70
SW55’2
Swl 59
Swl 64
SW169
SW174
SW179
Swl 84
SW21O
SW25W
SW25018
SW365
SW550’S
SW600
SW61 O
SW700
SW702’4
SW720
SW785
SW785
SW784S5
SW900
SW902°
SW903*6
SW1106”
Swl 190
TK902
260-0821-00
311-0662-00
260-0642-00
260-0642-00
260-0642-00
260-0642-00
260-0642-00
260-0642-00
260-0866-00
Wired *262-0788-00
260-0759-01
260-0643-00
260-0820-00
260-0643-00
260-0665-00
311-0640-00
260-0664-00
Wired *262-0787-00
2600819-00
311-0182-00
260-0834-00
311-0645-00
260-0689-00
260-0677-00
Lever
Toggle
Toggle
Toggle
Toggle
Toggle
Toggle
Rotary
Rotary
Rotary
Toggle
Rotary
Lever
Toggle
Lever
Lever
Rotary
Rotary
Toggle
BAND
IF AITEN 20 dB
IF ATTEN 16 dB
IF ATTEN 8 dB
IF ATTEN 4 dB
IF AllEN 2 dB
IF ATTEN 1 dB
DISPERSION RANGE
DISPERSION
DISPERSION
COUPLED RESOLUTION
VERTICAL DISPLAY
SOURCE
SLOPE
TIME/DIV
TIME/DIV
POWER
Push LOCK CHECK
lZFurni~hed as a unit with R55.
lssw250 and sW550 furnished as a unit.
‘furnished as a unit with R702.
15 Furnished as a unit with R786.
“%ee Mechanical Parts List. Line Voltage Selector Body.
17 Furnished as a unit with R1 106.
7-24
Thermal Cut-Out
Opens 158° *5”, closes 128” &lOO