Agilent Technologies 8564EC Service Guide

606 Chapter12
RF Section
A9 Input Attenuator
Table 12-2 Attenuator Control Truth Table (W11 connected to A14J6)
A14U421
ATTEN
Setting
(dB)
10 dB 30 dB 20 dB
Pin
16
Pin
15
Pin
14
Pin
13
Pin
12
Pin
11
0 L H* L H* L H*
10 H* L L H* L H*
20 L H* L H* H* L
30 H* L L H* H* L
40 H*LH*LLH*
50 L H* H* L H* L
60 H* L H* L H* L
ON OFF ON OFF ON OFF
* reads ≈ 0.2 V (floating) when W11 is disconnected
H ≈ 28 V L ≈ 0.6 V
Table 12-3 Attenuator Control Truth Table (W11 connected or
disconnected from A14J6)
A14U420
ATTEN
Setting
(dB)
10 dB 30 dB 20 dB
Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6
0 HLHLHL
10 LHHLHL
20 HLHLLH
30 LHHLLH
40 LHLHHL
50 HLLHLH
60 LHLHLH
OFF ON OFF ON OFF ON
H TTL High L TTL Low

Agilent Technologies 8564EC Specifications

General

Brand	Agilent Technologies
Model	8564EC
Category	Measuring Instruments
Language	English