Table of Contents
Advertisement
Paired Mode
Drive Modes
The 34945EXT module can drive switches and attenuators using either TTL or
open collector drive methods. The TTL drive mode uses active drive for both
high and low levels and drives a TTL high level when asserted. The open
collector drive provides a current path to ground when asserted.
The drive mode is set on a per bank basis and is included in the distribution
board's preset configuration. The drive mode can be changed using the
command:
ROUTe:RMODule:BANK:DRIVe:MODE
Agilent 34945A Microwave Switch/Attenuator Driver Module User's Guide
LED1 Connector
Pin
Use
Pin
1
+VI
2
3
+VI
4
5
+VI
6
7
+VI
8
9
+VI
10
11
+VI
12
13
+VI
14
15
+VI
16
H
TTL Drive
L
H
Open Collector
Drive
L
Figure 5-1. TTL and Open Collector Drive Modes.
Additional Operating Information
Use
Pin
SW1 - A
1
SW2 -A
3
SW3 - A
5
SW4 - A
7
SW5 - A
9
SW6 - A
11
SW7- A
13
SW8 - A
15
Drive Active
LED2 Connector
Use
Pin
Use
+VI
2
SW1 - B
+VI
4
SW2 - B
+VI
6
SW3 -B
+VI
8
SW4 - B
+VI
10
SW5 - B
+VI
12
SW6 - B
+VI
14
SW7 - B
+VI
16
SW8 - B
5
99
Advertisement
Table of Contents
