Model
8904A
Operation
ltcble
8-4.
HP-IB Codes
for
the
Standard HP
8904A
hnctwns
(4
of
5)
Function
Recall
~ ~
Reverse Power
Save
Service Requesi
Special
Functions
HP-IB
Code
RC
RP
sv
~-
RM
SM
SF
RSF
Description
Form:
RCcRegister>
Example:
'RC11"
Recall. Valid data values for Recall are 0-1 1.
~~ ~
Reset reverse power protection.
Form:
SV<Register>
Example:
'SVl
"
Save. Valid data values
for
Save are 0-1
1.
~~
~ ~ ~ ~
Form:
RM
Read Service Request Mask. The present value
of
the SRQ mask in ASCII is returned,
000-1
91.
Form:
SM<Data Value>
Examples:
'SM128", 'SMO"
Set Serv*ke Request Mask. Valid data
=
0-255
Fom\:
SF<Data Value>
Examples: 'SF4",
'SF1
7"
Set or Reset Special Functions. The value of the Special Function flag
can
be read at any time but
can
only
be set at the Main Selection Level.
The flag is a
composite
of
bit
flags.
A
Special Function operation configures
all
16 bits of the flag (that is,
any previously set flags
are
lost). Do not leave a space between the mnemonic and the data
value.
Example:
To
activate
Special
Functions 1 and
2,
the command would be:
"SF6"
Special1 value
=
2
Special2 value
=
4
6
Form:
RSF
Read Special Function Value. The returned value is the decimal representation of a 16 bit
binary number indicating the Special Function(s) that are active. Value range 00000 to 65535
in
ASCII
is returned.
Special Flag
Bit
Assignments:
Special
Function
Operation
0
1 Disable Automatic Phase Reset
2 Disable Beeper
3 Reverse Modulating Waveforms
4
Disable Output Blanking
5
Floating Outputs On Power UP
Last State Recalled On Power Up
Bit Pattern
Bit
Weight
16
8421
xxxx xxxx
xxxx
XXXl
xxxx
xxxx
xxxx
XXlX
xxxx
xxxx
xxxx
x1xx
xxxx
xxxx
xxxx
lXXX
xxxx
xxxx
XXXl
xxxx
xxxx
xxxx
XXXl
xxxx
(....additional specials not yet implemented
...
..
....)
Example:
If Specials
0
and
4
are active, RSF will return
a
value of
17.
Special
0
is a
bit
weight of 1 and Special
4
is 16 giving the result
of
17.
reu.01
NOV89
3-23
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
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