Ricoh A250 Service Manual page 409

1. OVERALL MACHINE INFORMATION
1.1 SPECIFICATIONS
Type
Desktop type transceiver
Circuit
PSTN, PABX, ISDN (Europe model only)
Connection
Direct couple
Original Size (Book)
Maximum Length: 432 mm [17 ins]
Maximum Width: 297 mm [11.7 ins]
Original Size (ADF)
Length: 128 - 1200 mm [5.0 – 47.2 ins]
Width: 105 - 297 mm [4.1 - 11.7 ins]
Thickness: 40 - 128 g/m
Scanning Method
Flat bed, with CCD
Scan Width
210 mm [8.3 ins] ± 1% (A4)
216 mm [8.5 ins] ± 1% (8.5" x 11")
256 mm [10.1 ins] ± 1% (B4)
279 mm [11.0 ins] ± 1% (11" x 17")
297 mm [11.7 ins] ± 1% (A3)
Resolutions
8 x 3.85 lines/mm (G3 only)
8 x 7.7 lines/mm (G3 only)
8 x 15.4 lines/mm (G3 only)
16 x 15.4 lines/mm (G3 only)
200 x 100 dpi
200 x 200 dpi
400 x 400 dpi
Note:
To use the 8 x 15.4 lines/mm, 16 x 15.4
lines/mm and 400 x 400 dpi resolutions, an
optional EXMEM is required.
SM
Memory Capacity
ECM: 128 Kbytes
SAF:
Standard: 2 Mbytes (160 pages)
With optional memory board (EXFUNC +
EXMEM) :
30 Mbytes (3000 pages)
Measured using an ITU-T #1 test document
(Slerexe letter)
Compression
MH, MR, MMR
JBIG (EXFUNC is required, G3/IG3 only)
2
[10 - 34 lbs]
(MMR only with ECM and G4)
SAF storage for memory tx: MMR and/or
raw data
Protocol
Group 3 with ECM
Group 4 (ISDN unit required)
Modulation
V.34, V.33, V.17 (TCM), V.29 (QAM),
V.27ter (PHM), V.8, V.21 (FM)
Data Rate (bps)
G3:
33600/31200/28800/26400/24000/21600/
19200/16800/14400/12000/9600/7200/4800
/2400, Automatic fallback
G4 (option): 64 kbps/56 kbps
I/O Rate
With ECM: 0 ms/line
Without ECM: 2.5, 5, 10, 20, or 40 ms/line
Transmission Time
G3: 3 s at 28800 bps; Measured with G3
ECM using memory for an ITU-T #1 test
document (Slerexe letter) at 8 x 3.85 l/mm
resolution
G4 (option): 3 s at 64 kbps; Measured with
an ITU-T #1 test document (Slerexe letter)
at 200 x 200 dpi resolution
1-1
SPECIFICATIONS
A250