HP 3478A Technical Manual page 30

3478A 3478A
Table 3-5. 3478A Addr Table 3-5. 3478A Address Codes
3-98. 3478A 3-98. 3478A HP-IB HP-IB Programming Programming
3-99. General. 3-99. General. The following paragraphs explain how to The following paragraphs explain how to
program the program the 3478A over 3478A over the HP-IB.
given using the HP-IB format, rather than controller given using the HP-IB format, rather than controller
dependent la dependent language. nguage. If the If the information is
controller dependent language, refer to the 3478A's controller dependent language, refer to the 3478A's
Operator's Manual. Operator's Manual.
3-100. 3-100. Programming the Programming
messages. Set-up information messages. Set-up information (Range, Fun
DATA sent by the controller and is done using program DATA sent by the controller and is done using program
codes. codes. The DATA received The DATA received by th
3478A) is measurement data, and other data like the 3478A) is measurement data, and other data like the
Status Byte and the five bytes from the Output Binary Status Byte and the five bytes from the Output Binary
Status Byte. Status Byte.
3-101. Program 3-101. Program Codes. Codes. All the program codes for the
3478A are listed in Table 3-6. 3478A are listed in Table 3-6. The 3478A must be in
"remote" and "listen" to receive the codes (the RMT and "remote" and "listen" to receive the codes (the RMT and
LSTN annunciators are on when the 3478A is in remote LSTN annunciators are on when the 3478A is in remote
ess Codes
the HP-IB. The information is The information is
information is desired using desired using
the 3478A 3478A is done is done by by DATA
(Range, Function, etc.) ction, etc.) is is
by the controller e controller (from the (from the
All the program codes for the
The 3478A must be in
and listening). An example and listening).
3-102. The Program 3-102. The Program Codes are a
characters (the characters
characters, spaces, commas, and semicolons are characters, spaces, commas, and semicolons are
ignored (they may be used with the codes as ignored (they may be used with the codes as
separators). separators).
feed, form feed, vertical tab, and horizontal tab feed, form feed, vertical tab, and horizontal tab
characters are also ignored. characters are
not included in Table 3-6 not included in
the Status Register the Stat us Register set).
caused if the characters are sent in a different order than caused if the characters are sent in a different order than
shown in the table (e.g. shown in the table (
3-103. Programming 3-103. Programming the
must be set for the 3478A to output a Require Service must be set for the 3478A to output a Require Service
Message. Setting the S Message.
the Status Byte; these bits are automatically set (except the Status Byte; these bits are automatically set (except
bit 6) when any corresponding require service condition bit 6) when any corresponding require service condition
is true. For example, you is true. For example, you wish to know if the multimeter
has received an incorrect program code (Syntax Error) or has received an incorrect program
has an int has an internal failure (
are true, bits 2 and 3 of the Status Byte are set; but no are true, bits 2 and 3 of the Status Byte are set; but no
Require Service Message Require Serv
not be output until the SRQ Mask is set to the not be output until the SRQ Mask is set to the
corresponding bits of the Status Byte (which are bits 2 corresponding bits of the Status Byte (which are bits 2
and 3). Since the mask is to be and 3). Since the mask is to be set in octal, the r
code for the bits is code for
"Mdd", where dd "Mdd", w
shown in the following example. shown in the following example.
DATA
3-104. Only bits 3-104. Only bits 0 to 5
SRQ Mask. Bit 6 of t SRQ Mask.
Require Service Message is output and bit 7 is set by the Require Service Message is output and bit
Power-On SRQ switch on the rear panel (see paragraph Power-On SRQ switch on the rear panel (see
3-105). . Because of th 3-105) Because of this, only
to to
3-11 3-11
An example is as follows: is as follows:
Codes are a series of 7-bit
(the parity parity bit is bit is ignored). ignored).
All null characters, All null characters, carriage
also ignored. Other characters w Other characters which are
Table 3-6, cause a Syntax Error (bit 2 in , cause a Syntax Error (bit 2 in
set). In addition, In addition, a Synta
e.g. "IF" causes a Syntax "IF" causes a Syntax Error).
the SRQ Mask. SRQ Mask. The SRQ Mask
Setting the SRQ Mask will not set t RQ Mask will not set the bits in
wish to know if the multimeter
ernal failure (Internal Error). Internal Error). If the conditions
ice Message is output is output. . The message w
set in octal, the resultant
the bits is "14". "14". The mask is set by The mask is set by sending
here dd is-the octal is-the octal code for t code for the bits.
0 to 5 can be set by can be set by programming the
Bit 6 of the Status By he Status Byte is set whenever
is, only a two a two digit octal code
TM 11-6625-3071-14 TM 11-6625-3071-14
series of 7-bit ASCII ASCII
All lower case All lower case
carriage return, return, line line
hich are
a Syntax Error is x Error is
Error).
The SRQ Mask
he bits in
code (Syntax Error) or
If the conditions
The message will ill
esultant
sending
he bits. This is This is
programming the
te is set whenever the the
7 is set by the
paragraph
digit octal code (00 (00