Keysight Technologies L4490A, User Manual

Page: 55 / 160

Keysight L4490A/L4491A User’s Guide 55
Hardware Configuration
Figure 2-9. Keysight 8494 /5 / 6 / 7 Attenuator Pin Definitions and Connections.
Pin Definition Pin Definition
1 Section 1 Thru Line 2 Section 1 Atten
3 No connection 4 Section 3 Thru Line
5 Section 2 Thru Line 6 Section 4 Thru Line
7 Section 4 Atten 8 Section 2 Atten
9 Section 3 Atten 10 +VR (relay drive voltage)
Distribution Board Connector
(8490x, 849x Opt. 016 series)
Y1153A
849x series Opt. 016
connector and pin
locations
849x Series Opt. 016 Pin and Attenuation Guide
Section 1 2 3 4 +V Supply
Soleniod Coil Thru
Line
Attn
Card
Thr
u
Lin
e
Attn
Card
Thru
Line
Atte
n
Card
Thru
Line
Atte
n
Car
d
Cable wire color code pur
ple
yello
w
bla
ck
gree
n
oran
ge
blue brow
n
whit
e
Red
Actuating pin 1 2 5 8 4 9 6 7 10
Attenuation (dB) 8494G/H 0 1 0 2 0 4 0 4
Attenuation (dB) 8495G/H/K 0 10 0 20 0 40
Attenuation (dB) 8496G/H 0 10 0 20 0 40 0 40
LED1 Connector LED2 Connector
Pin Definition Pin Definition Pin Definition Pin Definition
1 +VI 2 P101 Atten 1 1 +VI 2 P102 Atten 1
3 +VI 4 P101 Thru 1 3 +VI 4 P102 Thru 1
5 +VI 6 P101 Atten 2 5 +VI 6 P102 Atten 2
7 +VI 8 P101 Thru 2 7 +VI 8 P102 Thru 2
9 +VI 10 P101 Atten 3 9 +VI 10 P102 Atten 3
11 +VI 12 P101 Thru 3 11 +VI 12 P102 Thru 3
13 +VI 14 P101Atten 4 13 +VI 14 P102 Atten 4
15 +VI 16 P101 Thru 4 15 +VI 16 P102 Thru 4
Y1153A Distribution Board LED Connector Pins
Distribution Board LED Connector
10 8 6 4 2
9 7 5 3 1
Y1158A Cable
1
2
9
10
1
2
15
16
The Y1153A module
works with 849x series
attenuators even
though the module
silkscreen does not
show it.