Operating Information
2- 6
TLA721 Benchtop & TLA7XM Expansion Mainframe Service Manual
Table 2- 1: Passive monitor connector pinouts
Pin
Function
Description
1
+5 VM
+5 V for voltage monitoring
To monitor, only use a probe with greater than 1 M
Ω
impedance.
2
--12 VM
--12 V for voltage monitoring
To monitor, only use a probe with greater than 1 M
Ω
impedance.
3
--24 VM
--24 V for voltage monitoring
To monitor, only use a probe with greater than 1 M
Ω
impedance.
4
--2 VM
--2 V for voltage monitoring
To monitor, only use a probe with greater than 1 M
Ω
impedance.
5
ON/ST
Remote On/Standby Power Switch.
1
6
+5 VC
+5 V output for charging batteries, running external TTL circuitry,
1 A maximum
7
+12 VC
+12 V output for charging batteries, running external TTL circuitry,
1 A maximum
8
+5 VB
Input for +5 V standby voltage (for example, from an external
battery). Maximum of 1 A total (pins 8 and 21 combined)
2
9
GND
Logic Ground
10
SYSRESET*
Backplane SYSRESET* signal (input or output). If you use this pin,
do not violate VXIbus electrical specifications (keep the extender
cable as short as possible).
11
∆
T
An analog output signal proportional to the maximum temperature
rise of the 13 modules (100 mV/
°
C) 0V=0
°
C
12
TACH1
A square wave output signal whose period is proportional to the
speed of fan number 1
13
TACH2
A square wave output signal whose period is proportional to the
speed of fan number 2 when a second fan is used. In the current
mainframe only a single fan is used.
14
+12 VM
+12 V for voltage monitoring
To monitor, only use a probe with greater than 1 M
Ω
impedance.
15
+24 VM
+24 V for voltage monitoring
To monitor, only use a probe with greater than 1 M
Ω
impedance.
16
--5.2 VM
--5.2 V for voltage monitoring
To monitor, only use a probe with greater than 1 M
Ω
impedance.
17
GND
Logic Ground
18
GND
Logic Ground
19
GND
Logic Ground
20
GND
Logic Ground
Summary of Contents for TLA7XM
Page 5: ......
Page 13: ...Table of Contents viii TLA721 Benchtop TLA7XM Expansion Mainframe Service Manual ...
Page 17: ...Service Safety Summary xii TLA721 Benchtop TLA7XM Expansion Mainframe Service Manual ...
Page 21: ...Preface xvi TLA721 Benchtop TLA7XM Expansion Mainframe Service Manual ...
Page 25: ...Introduction xx TLA721 Benchtop TLA7XM Expansion Mainframe Service Manual ...
Page 43: ...Specifications 1 18 TLA721 Benchtop TLA7XM Expansion Mainframe Service Manual ...
Page 85: ......
Page 87: ...Adjustment Procedures 5 2 TLA721 Benchtop TLA7XM Expansion Mainframe Service Manual ...
Page 161: ...Repackaging Instructions 6 74 TLA721 Benchtop TLA7XM Expansion Mainframe Service Manual ...
Page 165: ...Electrical Parts List 8 2 TLA721 Benchtop TLA7XM Expansion Mainframe Service Manual ...
Page 169: ...Diagrams 9 4 TLA721 Benchtop TLA7XM Expansion Mainframe Service Manual ...
Page 189: ...Mechanical Parts List 10 20 TLA721 Benchtop TLA7XM Expansion Mainframe Service Manual ...