HP 7942 Service Manual page 25

Channel In terf ace
7942 and 7946
Table 2-1. Device Command Summary (continued)
SET RETRY TIME
(COMPLEMENTARY)
FUNCTION:
OPCODE:
FORMAT:
Sets amount of time available for read and seek retries.
<00111010> < P1 P2
>
P1-P2 = retry time in tens of milliseconds (16-bit binary
number)
SET
RE~LEASE (COMPLEMENTARY)
FUNCTION:
OPCODE:
FORMAT:
Def ines how a dev ice wi
11
respond to an in te rnal release
request.
<00111011> <T2000000>
T Suppress release timeout
2 Release automatically during idle time
SET BlJRST
(COMPLEMENTARY)
FUNCTION:
OPCODE:
FORMAT:
Activates and deactivates burst mode.
60
10
00111100
2
074
8
3C
16
61
10
00111101
2
075
8
3D
16
<0011110T> < P1
>
T 0 Only the last burst is tagged with the message
terminator (EOI on HP-IB)
T All bursts are tagged with the message terminator
P1 = Number of 256-byte segments in each burst (If P1=0,
burst mode is deactivated.)
2-7