Addressable To Talk Mode - HP 3438A Operating And Service Manual

Model 3438A
ADDRESS
SWITCHES
ADDRESSABLE TALK ONLY AS7
OPERATE TEST AS6
0 AS5
0
A S 4
0
0
AS2
0
' 7
SWITCHES MAY BE
SET IN ANY POSITION
FRONT ~ ~ ~ E A - B - s
Figure 3-10. Talk Only Switch Settings.
3-34. In the Talk Only mode with n o other devices
connected t o the Multimeter, the Multimeter inputs are
sampled continuously a t a rate of 2.4-4.7/sec
determined by the exact input level. D a t a is output a t the
HP-IB terminal asjasr as it is obtained. Refer t o Table
3-2.
Table 3-2. Output Delays.
" A f t e r
100
rns
A u t o Z e r o
Bus Commands
G r o u p Execute Trlgger (GET1
Dual Slope Convers~on
Multlmeter O u t p u t Avallablllty
G E T
t h r u O u t p u t Availability'
T ~ r n e
t o O u t p u t Data t o t h e H P - I B
T l m e t o Accept Data f r o m the H P - l B
3-35. With other devices connected t o the Multimeter via
the HP-IB. the output d a t a rate is determined by the
slowest Listener. The following application shows a
simple data logging system using the -hp- Model 3438A
Multimeter and the -hp- Model 5150A Thermal Printer.
T l m e Requlred
<
1 msec
<
3 0 0 msec
<
9 msec
<
3 1 0 rns
<
9 0 0 ps
+
Llstener delay
3 1 0 psicharacter,
1 0 0 psicharacter typlcal
3-36. Procedure:
a. With both instruments O F F , connect the HP-IB
cable between them.
b. Set Printer t o LISTENING (back panel).
c. Set Printer P R I N T C O M M A N D switch t o LF(1ine
feed).
d . Set the Printer front panel t o the desired Print
Interval.
NOTE
If' the selected print interval is less than the
Mulritneter output rate, the actual print
interval will be equal to the Multimeter
sample period.
e. Set the P R I N T T I M E switch to Sep Line (separate
line).
f. Set the Multimeter Address Switch t o Talk
Only/Operate a s shown in Figure 3-10.
g. Select the desired Multimeter Function a n d Range
and connect the Multimeter to the unknown voltage,
current, o r resistance.
h. Switch both instruments ON and set the printer
clock time (front panel). The Multimeter T A L K
annunciator light should be ON.
3-37. This system will print the Multimeter d a t a and the
Printer clock time. Any HP-IB compatible L I S T E N E R
can be used in place of the -hp- Model 5150A Printer for
this system.
3-38. If Option 003 is installed in the 5150A Printer, a s
many a s thirteen 3438A Multimeters can be scanned o n
one HP-IB data logger system.
3-39. Addressable to Talk Mode.
3-40. The Addressable t o Talk Mode is used in a system
with a controller such as a calculator o r computer.
Figure 3-11. Talk Only Data Logger.
3-6
THERMAL PRl NTER MULT IMETER
hp 5150A
hp
3 4 3 8 A
=
0
0
0 0 0
0 0
L u
B
P
34381-8-
1
CABLE
w
C
0<
OPTION
001 8
004 INSTALLED
oooonn
00000000
0