3276/78 Emulation Mode
Table F-8.
HP
37230A Modem Strappings (Multi-drop, Pt-to-Pt)
Type of Modem:
Hewlett-Packard 37230A
Short-haul
Type of Line:
2-wire or 4-wire metallic.
If
leased from Bell,
must
conform
to
standards
for intra-exchange lines
in
Bell SystemTechni-
cal Reference, Publication 41301
Transmission Rate:
9600,4800, 2400 Bits-per-second.
STRAP(S)
2-WIRE
4-WIRE
4-WIRE
PT-TO-PT
PT-TO-PT
MULTI-DROP
Data
Rate
(A)
2400 bps
a
a
a
4800 bps
b
b
b
9600 bps
c
c c
Test Links
(B)
b
b
b
(C)
a
a a
(N)
a a
a
Clock
(D)
b
b b
(E)
b
b
b
(8)
b b
b
Duplex (F) b (half) a (full) a (full)
Carrier
Select (H)
b
a
Master-a
Slaves-b
Transmit
Level
(J)
a a a
For
conformity to
BSTR 41301
at
2400 bps
a
a a
4800 bps b
b b
9600 bps c
c
c
Receive Impedance (K)
c a
Master
and
end-of-line slave
alb
Intermediate
slaves
c
Transmit
Impedance
non-transmitting
(L)
a
a
Master-a
Slave-b
F-16
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