Tektronix Keithley PROTO Module Quick Start Guide

PROTO Module

The PROTO Module is a prototyping board that enables users to design and interface
their own circuits to the Series 500. All Series 500 slot signals are available on the
PROTO Module including the supply voltages and grounds. The PROTO Module in­cludes interface logic for one TTGcompatible B-bit bidirectional data port. This allows
&bit data transfers to and from the user-designed circuitry on the PROTO Module.
One byte of data can be written to or read from the PROTO Module using the slot­dependent CMDA address.

Circuit Design Information

All of the Series 500 slot signals are available on the PROTO module, the slot signal
configuration is shown in Figure R-l.

The available power voltages and current sourcing capabilities are as follows:

Table R-l. Power Supply Information
Voltage Current Available Pin Number

+5 3oomA 21 & 24

+15 5omA 7 & 38

-15 5omA 6 & 39

All circuits designed on the PROTO module must satisfy the timing specification
shown in Figure R-2 for proper operation.

Document Number: 501-903-01 Rev. C PROTo-

REAR PANEL

ANA GND

ANA f’flllfi

ULC

F7 13 1

1
3

FRONT PANEL

ANA CAM

‘;LB 2

1 32 D7

PROTo-

* NOTE: IN SLOT 1 PIN 10 CARRIES CMDC AND PIN 11

CARRIES CMDD

+ NOTE: IN SLOT 2 AND 3 PIN 11 CARRIES CMDC

(A/D START/STATUS)

Figure R-l. Pin Out Diagram of Typical Connector

READ CYCLE

‘CMDA

DATA

‘CMDA

DATA -<

15 w-4

DATA IS VALID FROM PC

b-@lt7

t1

M- t2

DATA MUST BE VALID

t4

-+l++l t3

I++1 16

R/W

* NOTE: THE TIMING FOR THE CMDB SIGNAL IS THE SAME AS CMDA

t1

t2
13
14
15
t6
t7
18

310n.s typ
200nS min
OnS min
310nS typ
5nS min
1OnS min
55nS min
IOnS min

>

l+---4t8

Figure R-2. Read/Write Timing Diagrams

Port Addressing

The read/write port on the PROTO module is accessed through the slot-dependent
CMDA signal. The CMDA addresses are shown in Table R-2.

PRCJTO-3